CN117939365A

CN117939365A - Nonlinear term cancellation moving-iron moving-coil magnetic hybrid vibrator design method, device and application

Info

Publication number: CN117939365A
Application number: CN202311167359.3A
Authority: CN
Inventors: 胡中骥; 胡思钦
Original assignee: Dongguan Weidong Intelligent Technology Co ltd
Current assignee: Dongguan Weidong Intelligent Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-09-12
Publication date: 2024-04-26

Abstract

The design method of the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator comprises the following steps: the vibrator body comprises an outer cylinder, a first vibration transmission sheet, a second vibration transmission sheet, a first rotor component and a second rotor component; (2): the first rotor component and the second rotor component are respectively subjected to electromagnetic acting forces of pushing force and pulling force in pairs at the same time, and have the structural characteristics of push-pull, so that linear items in acting forces applied to the first rotor component and the second rotor component are overlapped with each other to be larger, nonlinear items in acting forces applied to the first rotor component and the second rotor component are partially or completely counteracted to be reduced, and the nonlinear item counteracted moving-iron moving-magnet ring hybrid vibrator is obtained.

Description

Nonlinear term cancellation moving-iron moving-coil magnetic hybrid vibrator design method, device and application

Technical Field

The invention relates to the technical field of vibrators, in particular to a method, a device and application for designing a nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator.

Background

The vibrator and or haptic feedback actuator design of bone conduction headphones provides numerous advantages, such as the relatively mature technology because of the much moving coil approach that is used for typical horns. In addition, the moving mass of the mover is relatively low, so that the response to the signal change is relatively fast, and the time delay is relatively small. Also, since the moving quality is relatively low, the bandwidth can be made high.

In the design of the vibrator and the actuator of the existing moving coil mode, because of the defects of the design of the magnet and the coil combination mode, a relatively high nonlinear term, namely a stressed or acceleration value of the moving coil assembly, is often generated, and relatively high distortion, namely total harmonic distortion THD (total harmonic distortion), is generated at a low frequency or a high frequency band, and referring to fig. 27, a distortion curve of the moving coil or moving magnetic vibrator of the existing design is shown, and it can be seen that the distortion reaches 55% at about 35hz and 65% at about 5k-6 khz. Such large distortions indicate that near low frequencies, distortion of the audio signal or haptic feedback signal results in substantial perception of sound quality and haptic feedback and substantial ingress and egress. In general, when the distortion is more than 10%, the standard of the slave audio is unacceptable.

In addition, referring to fig. 29, since there is only one vibrator system for a single moving magnet vibrator or a single moving coil vibrator, the resonance frequency point of the system is only one. When the input signal of the vibrator is close to the resonance frequency, the frequency response amplitude of the vibrator can generate a peak. When the input signal of the vibrator is separated from the resonance frequency, the amplitude of the frequency response curve of the vibrator can be attenuated rapidly. Thus, for a broadband input signal, the bandwidth of the frequency response curve of the vibrator is relatively narrow.

Disclosure of Invention

The invention aims to provide a method for designing a nonlinear term cancellation moving-iron moving-coil magnetic hybrid vibrator.

The invention also aims to provide the nonlinear term cancellation moving-iron moving-magnet ring hybrid vibrator designed by the method.

The invention also aims to provide the application of the nonlinear term cancellation moving-iron moving-magnet ring hybrid vibrator designed by the method.

The technical scheme of the invention is as follows: the design method of the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator comprises the following conditions:

(1): the vibrator body comprises an outer cylinder, a first vibration transmission sheet and a second vibration transmission sheet, a first rotor component and a second rotor component, wherein the first rotor component comprises an iron core combined structure, the second rotor component comprises a coil magnet combined structure, the first rotor component is arranged in the outer cylinder, the second rotor component is arranged in the outer cylinder and is positioned at the outer side of the first rotor component, the first rotor component is fixedly connected with the first vibration transmission sheet through at least one position, and the second rotor component is fixedly connected with the second vibration transmission sheet through at least one position;

(2): the first rotor component and the second rotor component are respectively subjected to electromagnetic acting forces of pushing force and pulling force in pairs at the same time, and the structure characteristics of push-pull type are presented.

The invention provides a nonlinear term cancellation moving-iron moving-coil magnetic hybrid vibrator design method, a device and application through improvement, and compared with the prior art, the method has the following improvement and advantages:

1. The invention provides a method for compensating the nonlinear term of the current of the vibrator coil in the acceleration of the moving iron component and the moving magnetic ring component or the acceleration of the two rotor components by a symmetrical or asymmetrical design, so that the nonlinear term can be completely or partially offset in the final resultant force, thereby greatly reducing the distortion of the vibrator and improving the fidelity of the vibrator to the original audio signal or the tactile feedback signal.

2. The nonlinear term counteraction moving-iron moving-coil magnetic hybrid vibrator reduces the total harmonic distortion of a low frequency range from an original peak value of 55% to below 15%, and reduces the total harmonic distortion of a high frequency from an original peak value of 65% to below 5%; the reduction of the distortion curve is equivalent to the reduction of the resonant frequency of the vibrator system from another aspect, so that the medium-low frequency of the tone quality is better; in addition, the sensitivity of the vibrator system can be equivalently improved and the power consumption can be reduced.

3. The nonlinear term counteraction moving-iron moving-coil magnetic hybrid double-acting vibrator provided by the invention has two sub-assemblies, each sub-assembly is connected with a separate spring piece, so that two independent vibrator systems are formed, and each vibrator system corresponds to one vibration resonance frequency. Therefore, when a broadband signal is input into the oscillator system, the frequency response curve of the oscillator is wider than that of the oscillator of the single-action subassembly, so that the oscillator has better reduction degree for the broadband input signal.

4. According to the design method of the moving-iron moving-coil magnetic hybrid double-acting vibrator, the obtained vibrator is uniformly balanced in stress, the vibrator generates integral translational vibration, and the vibration effect is best.

Drawings

The invention is further explained below with reference to the drawings and examples:

Fig. 1 is a cross-sectional view of a vibrator according to embodiments 1 and 2 of the present invention;

FIGS. 2-4 are closed magnetic flux curves for the first and second mover assemblies of embodiments 1 and 2 of the present invention;

FIG. 5 is a force analysis diagram of a first sub-assembly of embodiments 1 and 2 of the present invention;

FIG. 6 is a force analysis diagram of a second sub-assembly of embodiments 1 and 2 of the present invention;

FIG. 7 is a cross-sectional view of a dual spring vibration-transmitting plate apparatus of the present invention;

FIG. 8 is a top view of a dual spring vibration-transmitting plate apparatus of the present invention;

Fig. 9 is a cross-sectional view of a vibrator according to embodiment 3 of the present invention;

FIGS. 10-11 are magnetic flux closure curves for a first mover assembly and a second mover assembly according to embodiment 3 of the present invention;

FIGS. 12-13 are diagrams of force analyses of a first sub-assembly and a second sub-assembly according to embodiment 3 of the present invention;

Fig. 14 is a schematic structural view of a first vibration-transmitting sheet according to embodiment 3 of the present invention;

Fig. 15 is a cross-sectional view of a vibrator according to embodiment 4 of the present invention;

FIG. 16 is a cross-sectional view of a vibrator according to examples 5-6 of the present invention;

FIGS. 17-19 are magnetic flux closure curves for the first and second mover assemblies of examples 5-6 of the present invention;

FIG. 20 is a force analysis diagram of a first sub-assembly of embodiments 5-6 of the present invention;

FIG. 21 is a force analysis diagram of a second sub-assembly of embodiments 5-6 of the present invention;

Fig. 22 is a cross-sectional view of a vibrator according to embodiment 7 of the present invention;

fig. 23-24 are magnetic flux line closed curves of the first and second mover assemblies of embodiment 7 of the present invention;

FIG. 25 is a force analysis diagram of a first sub-assembly according to embodiment 7 of the present invention;

Fig. 26 is a cross-sectional view of a vibrator according to embodiment 8 of the present invention.

Fig. 27 is a graph of a total harmonic distortion THD test of a conventional moving coil vibrator;

FIG. 28 is a graph of the frequency response of a dual vibrator system of the present invention;

FIG. 29 is a prior art single vibrator system frequency response curve;

FIGS. 30-46 a are schematic views of magnet elements according to the present invention;

FIGS. 47-59 are schematic views of coil elements in accordance with the present invention;

fig. 60-65 are schematic diagrams of magnetic domains in the present invention.

Detailed Description

The following detailed description of the present invention clearly and fully describes the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

For the nonlinear term cancellation design, there are 2N domains inside the vibrator, the domains are combined in pairs, defined as domains D _1,i and D _2,i. Where i=1, 2,3, …, N. The main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic force acting fields D _1,i and D _2,i, and in the magnetic field D _1,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet, and in the magnetic field D _2,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet. Or in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to that of the permanent magnet, and in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as that of the permanent magnet.

When the direction of magnetic force lines of the coil passing through a certain magnetic field is the same as the direction of magnetic force lines of the permanent magnet, the total magnetic flux is equal to the sum of the magnetic flux generated by the coil and the magnetic flux generated by the permanent magnet. When the direction of magnetic force lines of the coil passing through a certain magnetic field is the same as that of the permanent magnet, the total magnetic flux is equal to the difference between the magnetic flux generated by the coil and the magnetic flux generated by the permanent magnet.

Magnetic domain: the magnetic domain is a space region filled with electromagnetic force energy, and generally consists of air or a medium with smaller magnetic permeability (such as relative magnetic permeability < 1000), and comprises a region where a magnet material is positioned; the nonlinear term-offset moving coil vibrator comprises at least one magnetic force acting domain. By magnetic field is meant a region of space within which there is an electromagnetic field or fields such that interaction forces occur between the components surrounding the magnetic field, which we define as the magnetic field. The magnetic domain is a space region where magnetic force interacts, and is generally defined by a space region (generating attraction or repulsion interaction) between the permanent magnets, or by a space region (generating attraction interaction) defined between the permanent magnets and the magnetizers, or by a space region defined between magnetizers (yokes) magnetized by the permanent magnets, or by a space region group where magnetic force interactions occur inside the permanent magnets (the permeability of hard magnetic materials constituting the permanent magnets is close to that of air);

several types of magnetic domains:

1) The space between the permanent magnets is filled with medium (air, relative permeability is slightly greater than 1)

If the medium is replaced by paramagnetic or diamagnetic material or ferromagnetic material with a relative permeability of less than 1000. Such as:

a. Paramagnetic substances: the relative magnetic permeability is slightly higher than 1, and substances such as air, oxygen, tin, aluminum, lead and the like are paramagnetic substances. The paramagnetic substance is placed in the magnetic field, and the magnetic induction intensity B is slightly increased.

B. diamagnetic substance: substances with a relative permeability slightly less than 1, such as hydrogen, copper, graphite, silver, zinc, etc., are all diamagnetic substances, also called diamagnetic substances. The diamagnetic substances are placed in the magnetic field, and the magnetic induction intensity B is slightly reduced.

C. Ferromagnetic substance: the relative permeability is much greater than 1 but less than 1000. Such as iron, steel, cast iron, nickel, cobalt, etc., are ferromagnetic materials. Examples of the cast iron having a relative permeability of less than 1000 are cobalt, an unannealed cast iron, an annealed cast iron, and the like. Or magnetic fluid, the relative magnetic permeability is below 10.

As shown in fig. 60, the permanent magnets 1 and 2 are surrounded by air. The permanent magnets are attracted mutually.

The magnetic domain D1 is a space area surrounded by air media between the permanent magnet 1 and the permanent magnet 2.

The magnetic domain D2 is a space region surrounded by part of the permanent magnet 2 and air media around the part of the permanent magnet 2.

The magnetic domain D3 is a space region surrounded by the whole permanent magnet 1 and the air medium around the position close to the permanent magnet 1.

The magnetic domain D4 is a space region surrounded by air media at the positions close to the permanent magnets 1 and 2 and the whole permanent magnets 1 and 2.

The magnetic domain D5 is a space area surrounded by air medium on one side of the permanent magnet 2 far away from the permanent magnet 1.

The magnetic domain D6 is a space area surrounded by permanent magnet material media of the surrounding part permanent magnet 1.

As shown in fig. 61, the permanent magnets 1 and 2 are surrounded by air. The permanent magnets are attracted mutually. D1-D6 can also be defined.

2) The space between the permanent magnet and the magnetizer is filled with medium (air, relative permeability is close to 1)

3) As shown in FIGS. 62-63, the space between the magnetic conductors is filled with a medium (air, relative permeability is close to 1)

Magnetic domain D1 is the space area surrounded by air medium between magnetizer 1 and magnetizer 2.

The magnetic domain D2 is a space area surrounded by partial permanent magnets, partial magnetizers 2 and peripheral air media.

The magnetic domain D3 is a space region formed by the whole magnet 1, part of permanent magnets and air medium around the position close to the magnet 1.

The magnetic domain D4 is a space area surrounded by all the magnetizers 1 and 2, the permanent magnets and the air medium around the magnetizers and the permanent magnets.

Magnetic domain D5 is the space area surrounded by the air medium on the side of the conductor body 2 far away from the magnetizer 1.

And the magnetic domain D6 is a space region surrounded by permanent magnet material media surrounding part of the permanent magnet.

4) As shown in FIG. 64, the space between the magnet and the magnetizer is filled with a medium (magnetorheological fluid, relative permeability between 5 and 9)

5) The space region inside the permanent magnet is filled with medium (permanent magnet material, relative permeability < 1000)

As shown in fig. 65, the magnetic domain D6 in the previous example. Inside is permanent magnetic material as medium, such as sintered ferrite, samarium cobalt and neodymium iron boron, the magnetic permeability is about 1.05, the bonded ferrite is also about 1.05, and the magnetic permeability of the bonded neodymium magnet ranges from about 1.1 to 1.7.

There are two types of magnetic fields, the first type of magnetic field being a magnetic field enclosed by the interior of the mover assembly or the interior of the stator assembly, the second type of magnetic field enclosed between the mover assembly and the stator assembly, and we are more interested in the second type of magnetic field. Therefore, through analysis of the second magnetic force acting domain, stress analysis of the rotor assembly can be obtained, so that resultant force of the rotor assembly of the vibrator system can be obtained, and a vibration equation of the resultant force can be further given.

Example 1

Referring to fig. 1-8, the method for designing the nonlinear term cancellation moving-coil magnetic hybrid vibrator comprises the following conditions:

(1): the vibrator body 11 is arranged, the vibrator body 11 comprises an outer cylinder 5, a first vibration transmission sheet 1 and a second vibration transmission sheet 2, a first rotor component 3 and a second rotor component 4, the first rotor component 3 comprises a magnet combination structure, the second rotor component 4 comprises a coil combination structure, the first rotor component 3 is arranged in the outer cylinder 5, the second rotor component 4 is arranged in the outer cylinder 5 and is positioned at the outer side or the inner side of the first rotor component 3, the first rotor component 3 is fixedly connected with the first vibration transmission sheet 1 through at least one position, and the second rotor component 4 is fixedly connected with the second vibration transmission sheet 2 through at least one position;

(2): the first rotor assembly 3 and the second rotor assembly 4 are respectively subjected to electromagnetic acting forces of pushing force and pulling force in pairs at the same time, and the two rotor assemblies exhibit a push-pull type structural characteristic.

(3): The number of the permanent magnets and the number of the coils are limited, the number of the permanent magnets is two, namely M ₁ and M ₂, and the number of the coils is two, namely C ₁;

The vibrator body 11 has 4 magnetic fields, the magnetic fields are combined in pairs, the magnetic fields are defined as a magnetic field D _1,1,D_2,1,D_1,2,D_2,2, a main magnetic force line closed curve of the coil C ₁ and main magnetic force line closed curves of the permanent magnets M ₁ and M ₂ respectively pass through a magnetic force acting field D _1,1,D_2,1,D_1,2,D_2,2, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnets M ₁ in the magnetic field D _1,1, and the magnetic force line direction of the coil C ₁ is opposite to the magnetic force line direction of the permanent magnets M ₂ in the magnetic field D _2,1;

When the direction of the magnetic force lines of the coil C ₁ passing through a certain magnetic domain is the same as that of the permanent magnet M ₁, the total magnetic flux is equal to the sum of the magnetic flux generated by the coil C ₁ and the magnetic flux generated by the permanent magnet M ₁; when the direction of the magnetic force lines of the coil C ₁ passing through a certain magnetic domain is opposite to that of the permanent magnet M2, the total magnetic flux is equal to the difference between the magnetic flux generated by the coil C ₁ and the magnetic flux generated by the coil M ₂;

The first sub-assembly 3 and the second sub-assembly 4 are subjected to 4 forces F _1,1 and F _2,1,F_1,2 and F _2,2; each of the force components F _1,j and F _2,j contains two parts, one part being a linear term of the excitation current i and one part being a nonlinear term of the excitation current i:

For the first sub-assembly 3, f _{First mover assembly ,linear} =k×i;

F_{First mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear＝0+0＝0；

For the second sub-assembly 4, there is, according to the force equal to the reaction force:

F_{A second mover assembly ,linear}＝K*i＝-K*i；

F_{A second mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear＝0+0＝0

k is a function of design parameters of the vibrator;

Wherein, S _D1,2,S_D2,2 is the area of the annular end face corresponding to the magnetic domains D _1,2 and D _2,2 respectively;

f, electromagnetic attraction force;

b, magnetic flux density (Magnetic flux density) or magnetic induction intensity;

A magnetic flux across the medium;

S: the magnetic force lines pass through the magnetic pole area;

Mu ₀: air permeability;

g _i: the magnetic flux of the magnetic circuit formed by the electromagnetic field generated by the current;

N: a number of turns of the coil;

C _y2y: force between the magnet (yoke) and the magnet (yoke).

I.e. the nonlinear terms in the components of the first and second sub-assemblies 3 and 4 cancel each other to zero, then F _{A second mover assembly ,nonlinear} and F _{First mover assembly ,nonlinear} =0, i.e. the resultant force and excitation current of the first and second sub-assemblies 3 and 4 have only linear terms, so that they are always in a linear relationship, and the nonlinear term canceling moving-iron moving-magnet ring hybrid vibrator is obtained.

Wherein the first sub-assembly 3 and the second sub-assembly 4 move independently; when the first magnetizer is adopted in the magnet combination structure, the magnetic resistance is small, and the vibration effect is better; while the first non-magnetizer has large magnetic resistance and weaker vibration effect, but can be applied to some scenes. Likewise, when the second magnetizer is adopted by the coil combination structure, the magnetic resistance is small, the vibration effect is better, and when the second non-magnetizer is adopted, the magnetic resistance is large, the vibration effect is weaker, but the coil combination structure can also be applied to some scenes.

The first vibration transmitting sheet 1 and the second vibration transmitting sheet 2 can be rectangular, round, runway-shaped or three-dimensional structures according to different application scenes, and the first vibration transmitting sheet 1 and the second vibration transmitting sheet 2 can also use double-spring vibration transmitting sheet devices and can be matched according to different application scenes; the first vibration-transmitting plate 1 and the second vibration-transmitting plate 2 are usually fixed on the top surface or the bottom surface of the outer cylinder 5.

The first stator assembly is fixed in the outer cylinder 5, and the second stator assembly is arranged outside the first stator assembly;

The first mover assembly 3 is fixedly connected with the first vibration transmitting sheet 1 through at least one site, wherein the site comprises point contact and surface contact, and the site can be one site, two sites or a plurality of sites.

The second mover assembly 4 is fixedly connected with the second vibration transmitting sheet 2 through at least one site, wherein the site comprises point contact and surface contact, and the site can be one site, two sites or a plurality of sites.

If the permanent magnets are symmetrically arranged, the corresponding size and magnetic force parameters of the symmetrical permanent magnets are the same;

If the plurality of coils are symmetrically arranged, the sizes and the current values of the symmetrical coils are the same.

In one case, the following conditions are also included:

(3.1): the permanent magnet is arranged outside the coil when seen from the center outwards;

(3.2) = (N _{Magnetic field},N_Ring(s)) = (j, j+1) ×n; j=1, 2,3 …; n is a natural number, n=1, 2,3 …;

(3.4): when N _{Magnetic field} is more than 1, polarities of two opposite end faces adjacent to the permanent magnet are the same; when N _Ring(s) is more than 1, the directions of currents in adjacent coils are opposite, the polarities of electromagnetic fields of two adjacent end faces of the adjacent coils are the same;

(3.4): if the permanent magnets are symmetrically arranged, the corresponding size and magnetic force parameters of the symmetrical permanent magnets are the same;

(3.5): if the plurality of coils are symmetrically arranged, the sizes and the current values of the symmetrical coils are the same.

In another case, the following conditions are included:

(3.2) = (N _{Magnetic field},N_Ring(s)) = (j+1, j) N; j=1, 2,3 …; n is a natural number, n=1, 2,3 …;

(3.3): when N _{Magnetic field} is more than 1, polarities of two opposite end faces adjacent to the permanent magnet are the same; when N _Ring(s) >1, the directions of currents in adjacent coils are opposite, adjacent two coils,

The polarities of the electromagnetic fields of the two adjacent end surfaces are the same;

Example 2

Referring to fig. 1-8 and fig. 28, a nonlinear term-offset moving-coil magnetic hybrid vibrator adopting the design method of embodiment 1 includes a vibrator body 11, where the vibrator body 11 includes a first vibration-transmitting sheet 1 and a second vibration-transmitting sheet 2, a first sub-assembly 3 and a second sub-assembly 4, where the first sub-assembly 3 includes an iron core 31 combined structure, the second sub-assembly 4 includes a coil magnet combined structure, the first sub-assembly 3 is disposed in an outer cylinder 5, the second sub-assembly 4 is disposed in the outer cylinder 5 and is located outside the first sub-assembly 3, the first sub-assembly 3 is fixedly connected with the first vibration-transmitting sheet 1 through at least one location, the second sub-assembly 4 is fixedly connected with the second vibration-transmitting sheet 2 through at least one location, the first vibration-transmitting sheet 1 is a first dual-spring vibration-transmitting sheet device, and the first dual-spring vibration-transmitting sheet device includes a first vertical portion 1a and a first bent portion 1b extending along the inner wall 5 in the plane periphery of the first vertical portion 1 a; the second vibration-transmitting sheet 2 is a first dual-spring vibration-transmitting sheet device, the second dual-spring vibration-transmitting sheet device comprises a second vertical portion 2a and a second bent portion 2b extending along the direction of the inner wall of the outer cylinder 5 and inclined to the outer periphery of the plane where the second vertical portion 2a is located, the iron core 31 comprises an iron core 31 and a first magnetizer or a first non-magnetizer 32, the coil magnet comprises a permanent magnet, a coil and a second magnetizer or a second non-magnetizer 41, the coil C ₁ is seen from the center outwards, the permanent magnet is arranged outside, and the first rotor assembly 3 and the second rotor assembly 4 are respectively and simultaneously subjected to electromagnetic acting forces of pushing force and pulling force in pairs, so that the coil magnet combined structure presents a push-pull type structural characteristic.

The two permanent magnets are M ₁ and M ₂ respectively, polarities of two opposite end faces adjacent to the permanent magnets M ₁ and M ₂ are the same, the coil is one, the first double-spring vibration-transmitting sheet device is fixed on the top surface of the outer cylinder 5, the second double-spring vibration-transmitting sheet device is fixed on the bottom surface of the outer cylinder 5, two ends of the iron core 31 are respectively fixed on a first vertical part 1a of the first double-spring vibration-transmitting sheet device and a second vertical part 2a of the second double-spring vibration-transmitting sheet device, the first magnetizer or the first non-magnetizer 32 is fixed on the iron core 31, an inner cylinder 6 is arranged on the inner side of the outer cylinder 5, the second magnetizer or the second non-magnetizer 41 is fixed on the middle part of the inner wall of the inner cylinder 6, the two permanent magnets M ₁ and M ₂ are respectively fixed on two sides of the second magnetizer or the second non-magnetizer 41, the coil C ₁ is fixedly arranged on the second magnetizer or the second non-magnetizer 41, the second magnetic conduction rings 42 are fixedly arranged on the outer sides of the two permanent magnets M ₁ and M ₂, the two second magnetic conduction rings 42 are respectively arranged on the first bending part 1b of the first double-spring vibration transmission sheet device and the second bending part 2b of the second double-spring vibration transmission sheet device, the shapes of the first rotor component 3 and the second rotor component 4 are in staggered occlusion arrangement, the main magnetic force line closed curve of the coil C ₁ and the main magnetic force line closed curve of the permanent magnets M ₁ and M ₂ alternately pass through the first rotor component 3 and the second rotor component 4,4 magnetic fields exist inside the vibrator body 11, the magnetic fields are combined in pairs and defined as magnetic fields D _1,1,D_2,1,D_1,2,D_2,2, the main magnetic force line closed curve of the coil C ₁ and the main magnetic force line closed curves of the permanent magnets M ₁ and M ₂ respectively cross the magnetic force acting field D _1,1,D_2,1,D_1,2,D_2,2, and in the magnetic field D _1,1, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnets M ₁ and M ₂, whereas in the magnetic field D _2,1, the magnetic force line direction of the coil C ₁ is opposite to the magnetic force line direction of the permanent magnets M ₁ and M ₂.

The outer cylinder 5 may be a magnetically conductive outer cylinder 5 or a non-magnetically conductive outer cylinder 5, and in order to reduce magnetic resistance, the magnetically conductive outer cylinder 5 is preferable; the cross section of the outer cylinder 5 may be circular, square, or irregular, and may be continuous or discontinuous, such as a columnar connection or a grid-like discontinuity.

In order to further explain the design method of the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator, please refer to fig. 4, in which 4 annular air gaps, which are marked by dense dots and are sequentially arranged along the axial direction, are a space region surrounded by the first rotor assembly 3 and the second rotor assembly 4. In these regions, the magnetic force lines formed by the coil C ₁ and the magnetic force lines formed by the permanent magnets M ₁ and M ₂ pass through, respectively. On both sides of these annular air gaps in the Z-axis direction are yokes of different shapes designed. According to the principle of electromagnetism, yokes on both sides of an air gap through which these magnetic lines pass generate electromagnetic forces that attract each other, and thus, the region where these magnetic forces act is called a magnetic force acting region.

Referring to fig. 2, there are 4 magnetic fields D _1,1,D_2,1,D_1,2,D_2,2 formed by air gaps. In the magnetic force action field, the magnetic fields generated by the permanent magnets M ₁ and M ₂ and the magnetic field generated by the electromagnet of the coil C1 are mutually overlapped to generate total magnetic flux/magnetic induction intensity, so that the components around the magnetic field generate interaction force. The magnetic domains D _1,1,D_2,1,D_1,2,D_2,2 above are all surrounded by the stator assembly and the mover assembly, and therefore, component forces of interaction are generated between the first mover assembly 3 and the second mover assembly 4.

The current through coil C ₁ is i and the corresponding magnetic flux is Φ _i. The magnetic fluxes corresponding to the permanent magnets M ₁,M₂ are Φ _M1 and Φ _M2, respectively.

Magnetic domain D _1,1,D_2,1,D_1,2,D_2,2 can pair magnetic domain pairs D _j＝(D_1,j,D_2,j) in pairs according to the symmetric case, j=1, 2; including magnetic domain pair D ₁＝(D_1,1,D_2,1), and magnetic domain pair D ₂＝(D_1,2,D_2,2).

1) Magnetic domain pair D _j＝(D_1,j,D_2,j), j=1, i.e., magnetic domain pair D ₁＝(D_1,1,D_2,1)

In the magnetic field D _1,1, the direction of the magnetic force lines corresponding to the coil C ₁ is opposite to the direction of the magnetic force lines corresponding to the permanent magnets M ₁ and M ₂, so that the total magnetic flux is the difference between Φ _i1 and Φ _M1＝Φ_m in the magnetic field D _1,1. In the magnetic field D _2,1, the magnetic force line direction corresponding to the coil C ₁ is the same as the magnetic force line direction corresponding to the permanent magnets M ₁ and M ₂, so that in the magnetic field D _2,1, the total magnetic flux is the added value of Φ _i2 and Φ _M1＝Φ_m.

Assume that coil C ₁ corresponds to flux Φ _i, as does magnets M ₁ and M ₂, i.e., Φ _M1＝Φ_M2＝Φ_m. In addition, if the direction of the magnetic force line of the magnet M ₁ is positive and the magnetic flux is positive, there is

Φ_D1,1＝Φ_M1-Φ_i＝Φ_m-Φ_i

Φ_D2,1＝-Φ_M2-Φ_i＝-(Φ_m+Φ_i)

2) Magnetic domain pair D _j＝(D_1,j,D_2,j), i=2, i.e. magnetic flux of magnetic domain pair (D _1,2,D_2,2)

In the magnetic field D _1,2, only the magnetic lines of force corresponding to the magnet M ₁ pass through, so the total magnetic flux is Φ _M1＝Φ_m only. In the magnetic field D _2,2, only the magnetic lines of force corresponding to the magnet M ₂ pass through, so the total magnetic flux is Φ _M2＝Φ_m only.

Assuming that the magnetic paths formed by the electromagnetic field generated by the current i in the upper coil C ₁ have the magnetic resistances Z _i, N is the number of coil turns in the coil C ₁, and i is the current intensity, there are:

Assuming that the magnetic path formed by the electromagnetic field generated by the current has a flux guide G _i, there are:

The magnetic fluxes corresponding to the permanent magnets M ₁ and M ₂ can be expressed by a magnetic induction intensity formula. Assuming that the magnetic induction intensities of the magnetic pole end surfaces of the permanent magnets M ₁ and M ₂ are both B _m, the areas of the magnetic pole end surfaces are both S _m. It is possible to obtain a solution that,

Thereby having the following characteristics

Referring to fig. 3, a closed curve of magnetic lines of force of the coil C ₁, and closed curves of magnetic lines of force of the magnets M ₁ and M ₂ are drawn. In the figure, the magnetic field lines of closure generated by the coil C ₁ pass through the magnetic gap D _1,1,D_2,1, and the magnetic field lines of closure generated by the magnet M ₁ pass through the magnetic gap D _1,1,D_1,2 in sequence, and the magnetic field lines of closure generated by the magnet M ₂ pass through the magnetic gap D _2,1,D_2,2 in sequence.

Fig. 5 is a schematic diagram of a vibrator subsystem composed of the first sub-assembly 3 and the spring plates in the first vibration-transmitting plate 1 and the second vibration-transmitting plate 2, and meanwhile, the positional relationship between the first sub-assembly 3 and the magnetic domain D _1,1,D_2,1,D_1,2,D_2,2 and the stress analysis of the first sub-assembly 3 are also illustrated. The first subassembly 3 is subjected to a rightward suction force F _1,1 from the second subassembly 4 in a magnetic field D _1,1, the first subassembly 3 is subjected to a leftward suction force F _2,1 from the second subassembly 4 in a magnetic field D _2,1, the first subassembly 3 is subjected to a leftward suction force F _1,2 from the second subassembly 4 in a magnetic field D _1,2, and the first subassembly 3 is subjected to a rightward suction force F _2,2 from the second subassembly 4 in a magnetic field D _2,2.

Assume that the magnetic domain pair D _j＝(D_1,j,D_2,j) corresponds to a resultant force F _j (which positive and negative represent different directions of force). With the right direction being the positive direction, the resultant force of the second sub-assembly 4 received by the first sub-assembly 3 is

F_{First mover assembly}＝F₁+F₂＝F_1,1-F_2,1-F_1,2+F_2,2

F_{First mover assembly}＝F₁+F_2＝(F_1,1-F_2,1)+(-F_1,2+F_2,2)

Where F _j is the resultant of the corresponding magnetic domain pair D _j＝(D_1,j,D_2,j).

Fig. 6 is a schematic diagram of a vibrator subsystem composed of the second sub-assembly 4 and the spring plates 2 in the first vibration-transmitting plate 1 and the second vibration-transmitting plate 2, and meanwhile, the positional relationship between the second sub-assembly 4 and the magnetic domain D _1,1,D_2,1,D_1,2,D_2,2 and the stress analysis of the second sub-assembly 4 are also illustrated. The second sub-assembly 4 is subjected to a leftward suction force F _1,1 from the first sub-assembly 3 in the magnetic domain D _1,1, the second sub-assembly 4 is subjected to a rightward suction force F _2,1 from the first sub-assembly 3 in the magnetic domain D _2,1, the second sub-assembly 4 is subjected to a rightward suction force F _1,2 from the first sub-assembly 3 in the magnetic domain D _1,2, and the second sub-assembly 4 is subjected to a leftward suction force F _2,2 from the first sub-assembly 3 in the magnetic domain D _2,2.

Assume that the magnetic domain pair D _j＝(D_1,j,D_2,j) corresponds to a resultant force F _j (which positive and negative represent different directions of force). With the positive direction to the right, the second sub-assembly 4 receives the resultant force of the first sub-assembly 3 as:

F_{A second mover assembly}＝-F₁-F₂＝(-F_1,1+F_2,1)+(F_1,2-F_2,2)

the above can also be expressed as the direction of the force is reflected in the sign of the force component as follows:

The same applies to the vibrator assembly 2 the respective component forces-F _1,j and-F _2,j, and the resultant forces sigma-F _1,j and sigma-F _2,j of the second subassembly 4.

The component forces are divided into two paired magnetic domain pairs, and the component forces of the different magnetic domain pairs D _j are respectively corresponding to the resultant force, for example, for the first sub-component 3, F ₁＝F_1,1-F_2,1 and F ₂＝-F_1,2+F_2,2 are provided, so that the total resultant force can be further calculated.

The formula of the electromagnetic force generated by each magnetic domain is further deduced. The electromagnetic attraction force acting on the magnetized ferromagnetic object is proportional to the total area of the magnetic lines passing through the magnetic poles and the square of the magnetic induction. If the magnetic induction B is uniformly distributed along the pole surface and the air gap length is calculated to be small, the formula for calculating the electromagnetic attraction force is calculated by the formula of max Wei Gong, which is expressed as follows:

f electromagnetic attraction force

B magnetic flux density (Magnetic flux density) or magnetic induction

Magnetic flux across a medium

S: magnetic force line passing through magnetic pole area

Mu ₀: permeability of air

C: the pole end face combination type and shape correlation coefficient have different values for different scenes. If the acting force generated between the permanent magnet and the permanent magnet is C _m2m, the acting force is usually 1, and an accurate value is obtained through actual measurement in the actual design process; if the acting force between the permanent magnet and the magnetic iron (yoke) is applied, C _m2y is usually 1/2, and an accurate value is obtained through actual measurement in the actual design process; if the force between the magnet (yoke) and the magnet (yoke) is recorded as C _y2y, the value is usually 1/4, and the accurate value is obtained through actual measurement in the actual design process.

1) Calculation of F _j, j=1, corresponding to domain pair D _j＝(D_1,j,D_2,j), j=1

Corresponding to the resultant force F ₁＝F_1,1-F_2,1 of the force components of the magnetic domain pair D ₁＝(D_1,1,D_2,1). The above formula is used to calculate the electromagnetic attraction force in the above magnetic domains D ₁₁ and D ₂₁:

wherein S _D1,1,S_D2,1 is the area of the annular end face corresponding to the magnetic domains D _1,1 and D _2,1, respectively, and S _D1,1＝S_D2,1＝S_D. Thus, there are:

The method comprises the following steps:

Because of

F₁＝F_1,1-F_2,1

Then there is

F₁＝F_1,linear+F_1,nonlinear

Substituting F _1,1,linear,F_2,1,linear,F_{1,1,nonlinear},F_{1,1,nonlinear} for F _1,linear and F _1,nonlinear, respectively, calculated is:

Because of

Thus, there are:

The calculation of F _1,nonlinear is also carried out,

So that the resultant force of the components of D ₁＝(D_1,1,D_2,1) is:

2) Calculation of F _j, j=2, corresponding to domain pair D _j＝(D_1,j,D_2,j), j=2

Corresponding to the resultant force F ₂＝-F_1,2+F_2,2 of the force components of the magnetic domain pair D ₂＝(D_1,2,D_2,2). The electromagnetic attraction force in the above magnetic fields D ₁₂ and D ₁₂ is calculated as follows:

Wherein S _D1,2,S_D2,2 is the area of the annular end face corresponding to the magnetic domains D _1,2 and D _2,2, respectively, and S _D1,2＝S_D2,2＝S_D, thereby:

Thereby having the following characteristics

Can obtain

Because of the resultant force exerted by the first mover assembly 3

F_{First mover assembly}＝F₁+F₂

F_{First mover assembly}＝F_{First mover assembly ,linear}+F_{First mover assembly ,nonlinear}

All of:

F_{First mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear＝0+0＝0

F_{A second mover assembly ,nonlinear}＝-F_{First mover assembly ,nonlinear}＝0

The first sub-assembly 3 and the second sub-assembly 4 are stressed in the same direction and opposite to each other, but the vibrator systems of the first sub-assembly 3 and the second sub-assembly 4 are different. The first rotor component 3 corresponds to the spring 1 in the double-spring sheet, and the second rotor component 4 corresponds to the spring 2 in the double-spring sheet. In addition, the vibration masses of the first and second mover assemblies 3 and 4 are also different, and thus, the mechanical vibration systems and the vibration equations of the first and second mover assemblies 3 and 4 are different.

From the above derivation, the following features can be seen:

1) In resultant force linear term F _{Mover assembly ,linear}, the respective linear terms of component forces F _1,linear and F _2,linear are superimposed, respectively, so that resultant force linear term F _{Mover assembly ,linear} and coil C1 current remain in linear relationship.

2) In the resultant force nonlinear term F _{Mover assembly ,nonlinear}, the nonlinear terms of the respective force components F _1,nonlinear and F _2,nonlinear cancel each other out so that the resultant force nonlinear term F _{Mover assembly ,nonlinear} is zero.

Example 3

Referring to fig. 9-14, a nonlinear term cancellation moving coil magnetic hybrid vibrator device is adopted, and the nonlinear term cancellation moving coil magnetic hybrid vibrator device according to embodiment 1 includes a vibrator body 11, where the vibrator body 11 includes a first vibration transmitting sheet 1 and a second vibration transmitting sheet 2, a first rotor assembly 3 and a second rotor assembly 4, where the first rotor assembly 3 includes an iron core 31 combined structure, the second rotor assembly 4 includes a coil magnet combined structure, the first rotor assembly 3 is disposed in an outer cylinder 5, the second rotor assembly 4 is disposed in the outer cylinder 5 and is located outside the first rotor assembly 3, the first rotor assembly 3 is fixedly connected with the first vibration transmitting sheet 1 through at least one location, the second rotor assembly 4 is fixedly connected with the second vibration transmitting sheet 2 through at least one location, the iron core 31 combined structure includes an iron core 31 and a first magnetizer 32, the coil magnet combined structure includes a coil, a permanent magnet and a second magnetizer or a second magnetizer 32, and both of which are exposed to the first electromagnetic force and second electromagnetic force and pull force and are respectively exerted to the first electromagnetic force and second electromagnetic force and pull force and the second magnetic conductor assembly ₁ from the inner side to the outer coil assembly 24;

The two permanent magnets are respectively adjacent to two opposite end surfaces of the permanent magnets M ₁ and M ₂, the polarity of the coil C ₁ is the same, the first vibration transmission sheet 1 is fixed on the top surface of the outer cylinder 5, one end of the iron core 31 is fixed in the middle of the first vibration transmission sheet 1, the other end of the iron core 31 is fixedly provided with a first magnetizer or a first non-magnetizer 32, the inner side of the outer cylinder 5 is provided with an inner cylinder 6, the second magnetizer or a second non-magnetizer 41 is fixed in the middle of the inner wall of the inner cylinder 6, the two permanent magnets M ₁ and M ₂ are respectively fixed on two sides of the second magnetizer or the second non-magnetizer 41, the coil C ₁ is fixed on the second magnetizer or the second non-magnetizer 41, the outer sides of the two permanent magnets M ₁ and M ₂ are fixedly provided with magnetic rings, the second vibration transmission sheet 2 is fixed on the bottom surface of the outer cylinder 5, the inner cylinder 6 is fixedly connected with the second vibration transmission sheet 2 through a vibration transmission bracket 7, the shapes of the first rotor component 3 and the second rotor component 4 are in concave-convex staggered occlusion arrangement, the main magnetic force line closed curve of the coil C ₁ and the main magnetic force line closed curve of the permanent magnets M ₁ and M ₂ respectively alternately pass through the first rotor component 3 and the second rotor component 4, 2N magnetic domains exist in the vibrator body 11, the magnetic domains are combined in pairs and defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic force line closed curve of the coil C ₁ and the main magnetic force line closed curve of the permanent magnets M ₁ and M ₂ respectively pass through magnetic force acting domains D _1,i and D _2,i, and in the magnetic domain D _1,i, the magnetic force line direction of the coil C ₁ is the same as that of the permanent magnets M ₁ and M ₂, and in the magnetic domain D _2,i, the magnetic force line direction of the coil C ₁ is opposite to that of the permanent magnets M ₁ and M ₂; in the magnetic field D _1,i, the magnetic force line direction of the coil C ₁ is opposite to the magnetic force line direction of the permanent magnets M ₁ and M ₂, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnets M ₁ and M ₂.

Example 4

Referring to fig. 7-8, 14-15, a nonlinear item cancellation moving coil magnetic hybrid vibrator device is adopted, and the nonlinear item cancellation moving coil magnetic hybrid vibrator device according to claim 1 is adopted, and comprises a vibrator body 11, wherein the vibrator body 11 comprises a first vibration transmission sheet 1 and a second vibration transmission sheet 2, a first rotor assembly 3 and a second rotor assembly 4, the first rotor assembly 3 comprises an iron core 31 combined structure, the second rotor assembly 4 comprises a coil magnet combined structure, the first rotor assembly 3 is arranged in an outer cylinder 5, the second rotor assembly 4 is arranged in the outer cylinder 5 and is positioned outside the first rotor assembly 3, the first rotor assembly 3 is fixedly connected with the first vibration transmission sheet 1 through at least one position, the second rotor assembly 4 is fixedly connected with the second vibration transmission sheet 2 through at least one position, the iron core 31 combined structure comprises an iron core 31 and a first magnetizer or a first non-magnetizer 32, the coil magnet combined structure comprises a magnet, a coil and a second magnetizer or a non-magnetizer ₁, and a push-pull force is exerted on the two-pull force magnet assemblies from the two-push-pull magnet assemblies to the outside the two-pull magnet assemblies 3 respectively;

The number of the permanent magnets is two, namely M ₁ and M ₂, the polarities of two opposite end surfaces adjacent to the permanent magnets M ₁ and M ₂ are the same, the number of the coils C ₁ is one, the first vibration transmission sheet 1 is fixed on the bottom surface of the outer cylinder 5, one end of the iron core 31 is fixed on the middle part of the first vibration transmission sheet 1, the first magnetizer or the first non-magnetizer 32 is fixed on the iron core 31, the second vibration transmission sheet 2 and the first vibration transmission sheet 1 are of an integral structure, the second vibration transmission sheet 2 is inclined from the outer periphery of the plane of the first vibration transmission sheet 1 to the direction of the inner wall of the outer cylinder 5, the inner cylinder 6 is arranged in the outer cylinder 5, the second magnetizer or the second non-magnetizer 41 is fixed on the middle part of the inner wall of the inner cylinder 6, the two permanent magnets M ₁ and M ₂ are respectively fixed at two sides of the second magnetizer or the second non-magnetizer 41, magnetic conducting rings are fixedly arranged at the outer sides of the two permanent magnets M ₁, the coil C ₁ is fixed on the second magnetizer or the second non-magnetizer 41, one of the magnetic conducting rings is fixed on the second vibration transmitting sheet 2, the first rotor assembly 3 and the second rotor assembly 4 are in a concave-convex staggered occlusion arrangement, the main magnetic line closing curve of the coil C ₁ and the main magnetic line closing curve of the permanent magnet M ₁ respectively and alternately pass through the first rotor assembly 3 and the second rotor assembly 4, 2N magnetic domains are arranged in the vibrator body 11, the magnetic domains are combined in pairs to define magnetic domains D _1,i and D _2,i, wherein i=1, 2,3, … and N, the main magnetic force line closed curve of the coil C ₁ and the main magnetic force line closed curves of the permanent magnets M ₁ and M ₂ respectively pass through magnetic force acting fields D _1,i and D _2,i, and in a magnetic field D _1,i, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnets M ₁, while in a magnetic field D _2,i, the magnetic force line direction of the coil C ₁ is opposite to the magnetic force line direction of the permanent magnets M ₁ and M ₂; in the magnetic field D _1,i, the magnetic force line direction of the coil C1 is opposite to the magnetic force line direction of the permanent magnets M ₁ and M ₂, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnets M ₁ and M ₂.

Example 5

Referring to fig. 7-9, 16-21, the nonlinear term cancellation moving-coil magnetic hybrid vibrator design method includes the following conditions:

(3): Then, the number of permanent magnets M ₁ is one, and the number of coils is two, C ₁ and C ₂, respectively, are defined;

4 magnetic domains exist in the vibrator body 11, and the magnetic domains are combined in pairs and defined as a magnetic domain D _1,1,D_2,1,D_1,2,D_2,2, wherein i=1; the main magnetic force line closed curve of the coils C ₁ and C ₂ and the main magnetic force line closed curve of the permanent magnet M ₁ respectively pass through the magnetic force acting fields D _1,1 and D _2,1, and in the magnetic field D _1,1, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnet M1, while in the magnetic field D _2,1, the magnetic force line direction of the coil C ₁ is opposite to the magnetic force line direction of the permanent magnet M ₂;

When the direction of the magnetic force lines of the coil C ₁ passing through a certain magnetic domain is the same as that of the permanent magnet M ₁, the total magnetic flux is equal to the sum of the magnetic flux generated by the coil C ₁ and the magnetic flux generated by the permanent magnet M ₁; when the direction of the magnetic force lines of the coil C ₂ passing through a certain magnetic domain is opposite to that of the permanent magnet M ₁, the total magnetic flux is equal to the difference between the magnetic flux generated by the coil C ₂ and that generated by the permanent magnet M ₁;

The first and second sub-assemblies 3, 4 are subjected to 2 forces F _1,j and F _2,j, j=1, 2,3, …, N <100; each of the force components F _1,j and F _2,j contains two parts, one part being a linear term of the excitation current i and one part being a nonlinear term of the excitation current i:

For the first sub-assembly 3, f _{First mover assembly ,linear} =k×i;

f _{First mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear =0+0=0; for the second sub-assembly 4, there is, according to the force equal to the reaction force:

F_{A second mover assembly ,linear}＝K*i＝-K*i；

F _{A second mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear =0+0=0, where K is a function of the design parameters of the vibrator itself;

f, electromagnetic attraction force;

A magnetic flux across the medium;

S: the magnetic force lines pass through the magnetic pole area;

Mu ₀: air permeability;

N: the number of turns of the coil C1;

C _y2y: force between the magnet (yoke) and the magnet (yoke).

Example 6

Referring to fig. 7-9, 16-21, a nonlinear item cancellation moving coil magnetic hybrid vibrator device is adopted, and the nonlinear item cancellation moving coil magnetic hybrid vibrator design method according to embodiment 5 includes a vibrator body 11, wherein the vibrator body 11 includes a first vibration transmitting sheet 1 and a second vibration transmitting sheet 2, a first rotor assembly 3 and a second rotor assembly 4, the first rotor assembly 3 includes an iron core 31 combined structure, the second rotor assembly 4 includes a coil magnet combined structure, the first rotor assembly 3 is disposed in an outer cylinder 5, the second rotor assembly 4 is disposed in the outer cylinder 5 and is located outside the first rotor assembly 3, the first rotor assembly 3 is fixedly connected with the first vibration transmitting sheet 1 through at least one point, the second rotor assembly 4 is fixedly connected with the second vibration transmitting sheet 2 through at least one point, the first vibration transmitting sheet 1 is a first double-spring vibration transmitting sheet device, and the first double-spring vibration transmitting sheet device includes a first vertical portion 1a and a first oblique portion extending along the first oblique portion 1a in the outer cylinder 5 b; the second vibration-transmitting plate 2 is a second dual-spring vibration-transmitting plate device, the second dual-spring vibration-transmitting plate device comprises a second vertical portion 2a and a second bending portion 2b extending along the direction of the inner wall of the outer cylinder 5 and inclined along the outer periphery of the plane where the second vertical portion 2a is located, the first dual-spring vibration-transmitting plate device is fixed on the top surface of the outer cylinder 5, the second dual-spring vibration-transmitting plate device is fixed on the bottom surface of the outer cylinder 5, the iron core 31 comprises an iron core 31 and a first magnetizer or a first non-magnetizer 32, the coil magnet assembly comprises a magnet, a coil and a second magnetizer or a second non-magnetizer 41, the coil is arranged in the outside, the first mover assembly 3 and the second mover assembly 4 are respectively and simultaneously subjected to electromagnetic forces of pushing force and pulling force in pairs, and the electromagnetic forces present a push-pull type structural feature.

The number of the permanent magnets M ₁ is two, the number of the coils is C ₁ and C ₂ respectively, the directions of currents in adjacent coils C ₁ and C ₂ are opposite, the electromagnetic fields formed by adjacent coils C ₁ and C ₂ have the same polarity, the magnetic fields of adjacent two end faces are the same, the first double-spring vibration-transmitting sheet device is fixed on the top surface of the outer cylinder 5, the second double-spring vibration-transmitting sheet device is fixed on the bottom surface of the outer cylinder 5, the two ends of the iron core 31 are respectively fixed on the first vertical part 1a of the first double-spring vibration-transmitting sheet and the second vertical part 2a of the second double-spring vibration-transmitting sheet, one side of the iron core 31 is provided with a first magnetic conduction ring 33, the first magnetic conductor or the first non-magnetic conductor 32 is fixed in the middle of the iron core 31, the inner side of the outer cylinder 5 is provided with an inner cylinder 6, the permanent magnet M ₁ is fixed in the middle of the inner wall of the inner cylinder 6, the second magnetizer or the second non-magnetizer 41 is fixed on two sides of the permanent magnet M ₁, the coils C ₁ and C ₂ are fixedly arranged on the second magnetizer or the second non-magnetizer 41, the two second magnetizers or the second non-magnetizer 41 are respectively fixed on the first bending part 1b of the first double-spring vibration-transmitting sheet device and the second bending part 2b of the second double-spring vibration-transmitting sheet device, the first magnetizer or the first non-magnetizer 32 is positioned between the two coils C ₁ and C ₂, the first rotor assembly 3 and the second rotor assembly 4 are in concave-convex staggered engagement, the main magnetic force line closing curves of the coils C ₁ and C ₂ and the main magnetic force line closing curve of the permanent magnet M ₁ alternately pass through the first rotor assembly 3 and the second rotor assembly 4 respectively, 2 groups of magnetic fields exist in the vibrator body 11, the magnetic fields are combined in pairs and defined as a magnetic field D _1,1,D_2,1,D_1,2,D_2,2, a main magnetic force line closed curve of the coil C ₁ and a main magnetic force line closed curve of the permanent magnet M1 respectively pass through magnetic force acting fields D _1,1 and D _2,2, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnet M ₁ in the magnetic field D _1,1, and the magnetic force line direction of the coil C ₂ is opposite to the magnetic force line direction of the permanent magnet M ₁ in the magnetic field D _2,1.

The 4 annular air gaps, which are indicated by densely-spaced dots in fig. 19 and are sequentially arranged along the axial direction, are the space regions surrounded by the first sub-assembly 3 and the second sub-assembly 4. In these regions, the magnetic lines of force formed by the coils C ₁ and C ₂ and the magnetic lines of force formed by the permanent magnets M ₁ pass through, respectively. On both sides of these annular air gaps in the Z-axis direction are yokes of different shapes designed. According to the principle of electromagnetism, yokes on both sides of an air gap through which these magnetic lines pass generate electromagnetic forces that attract each other, and thus, the region where these magnetic forces act is called a magnetic force acting region.

In fig. 18, there are 4 magnetic fields D _1,1,D_2,1,D_1,2,D_2,2 each consisting of an air gap. In the magnetic force action field, the magnetic field generated by the permanent magnet M1 and the magnetic field generated by the electromagnet of the coil C1 are mutually overlapped to generate total magnetic flux/magnetic induction intensity, so that the components around the magnetic field generate interaction force. The upper magnetic fields D _1,1,D_2,1,D_1,2,D_2,2 are all surrounded by the first and second mover assemblies 3,4, so that component forces of interaction are generated between these magnetic fields, the first and second mover assemblies 3, 4.

In the above figures, the current through coil C ₁ is i ₁, the current through coil C ₁ is i ₂, and the magnetic fluxes corresponding to coils C ₁ and C ₂ are Φ _i1 and Φ _i2, respectively. The magnetic flux corresponding to the permanent magnet M ₁ is Φ _M1.

In the magnetic field D _1,1, the magnetic force line direction corresponding to the coil C ₁ is opposite to the magnetic force line direction corresponding to the permanent magnet M ₁, so that in the magnetic field D _1,1, the total magnetic flux is the difference between Φ _i1 and Φ _M1＝Φ_m. In the magnetic field D _2,1, the magnetic force line direction corresponding to the coil C ₂ is the same as the magnetic force line direction corresponding to the permanent magnet M ₁, so that in the magnetic field D _2,1, the total magnetic flux is the added value of Φ _i2 and Φ _M1＝Φ_m.

Assuming i ₁＝i₂＝i,Φ_i1＝Φ_i2＝Φ_i that the magnetic force line direction of the magnet M ₁ is positive and the magnetic flux is positive, there is

Φ_D1,1＝Φ_M1-Φ_i1＝Φ_m-Φ_i

Φ_D2,1＝Φ_M1+Φ_i2＝Φ_m+Φ_i

In the magnetic field D _1,2, only the magnetic lines of force corresponding to the coil C1 ₁ pass through, so the total magnetic flux is Φ _i1＝Φ_i only. In the magnetic field D _2,2, only the magnetic lines of force corresponding to the coil C1 ₂ pass through, so the total magnetic flux is Φ _i2＝Φ_i only.

Assuming that the magnetic paths formed by the electromagnetic fields generated by the current i in the upper coils C ₁ and C ₂ have a reluctance Z _i, N is the number of coil turns in the coils C ₁ and C ₂, and i is the current intensity, there are:

The magnetic flux corresponding to the permanent magnet M ₁ can be expressed by a magnetic induction intensity formula. Assuming that the magnetic induction intensity of the magnetic pole end surfaces of the permanent magnets M ₁ is B _m, respectively, the area of the magnetic pole end surfaces is S _m. It is possible to obtain a solution that,

Thereby having the following characteristics

Fig. 17 is a graph showing the magnetic field lines of coils C1 ₁ and C1 ₂, and the magnetic field lines of magnet M ₁. In the figure, the magnetic field lines of closure generated by the coil C ₁ pass through the magnetic gap D _1,1,D_1,2, the magnetic field lines of closure generated by the coil C1 ₂ pass through the magnetic gap D _2,1,D_2,2, and the magnetic field lines of closure generated by the magnet M ₁ pass through the magnetic gap D ₁₁,D₂₁ in sequence.

Fig. 20 is a schematic diagram of a vibrator subsystem composed of the first sub-assembly 3 and the spring plates 1 in the first vibration-transmitting plate 1 and the second vibration-transmitting plate 2, and meanwhile, the positional relationship between the first sub-assembly 3 and the magnetic domain D _1,1,D_2,1,D_1,2,D_2,2 and the stress analysis of the first sub-assembly 3 are also illustrated. The first subassembly 3 is subjected to a leftward suction force F _1,1 from the second subassembly 4 in the magnetic field D _1,1, the first subassembly 3 is subjected to a rightward suction force F _2,1 from the second subassembly 4 in the magnetic field D _2,1, the first subassembly 3 is subjected to a rightward suction force F _1,2 from the second subassembly 4 in the magnetic field D _1,2, and the first subassembly 3 is subjected to a leftward suction force F _2,2 from the second subassembly 4 in the magnetic field D _2,2.

F_{First mover assembly}＝F₁+F₂＝-F_1,1+F_2,1+F_1,2-F_2,2

F_{First mover assembly}＝F₁+F₂＝(-F_1,1+F_2,1)+(F_1,2-F_2,2)

Fig. 21 is a schematic diagram of a vibrator subsystem composed of the second sub-assembly 4 and the spring plates 2 in the first vibration-transmitting plate 1 and the second vibration-transmitting plate 2, and meanwhile, the positional relationship between the second sub-assembly 4 and the magnetic domain D _1,1,D_2,1,D_1,2,D_2,2 and the stress analysis of the second sub-assembly 4 are also illustrated. The second sub-assembly 4 is subjected to a rightward suction force F _1,1 from the first sub-assembly 3 in the magnetic domain D _1,1, the second sub-assembly 4 is subjected to a leftward suction force F _2,1 from the first sub-assembly 3 in the magnetic domain D _2,1, the second sub-assembly 4 is subjected to a leftward suction force F _1,2 from the first sub-assembly 3 in the magnetic domain D _1,2, and the second sub-assembly 4 is subjected to a rightward suction force F _2,2 from the first sub-assembly 3 in the magnetic domain D _2,2.

F_{A second mover assembly}＝-F₁-F₂＝(F_1,1-F_2,1)+(-F_1,2+F_2,2)

The component forces are divided into two paired magnetic domain pairs, and the component forces of the different magnetic domain pairs D _j are respectively corresponding to the resultant force, for example, F ₁＝-F_1,1+F_2,1 and F ₂＝F_1,2-F_2,2 are provided for the first sub-component 3, so that the total resultant force can be further calculated

f electromagnetic attraction force

B magnetic flux density (Magnetic flux density) or magnetic induction

Magnetic flux across a medium

S: magnetic force line passing through magnetic pole area

Mu ₀: permeability of air

C: the pole end face combination type and shape correlation coefficient have different values for different scenes. If the acting force generated between the permanent magnet and the permanent magnet is C _m2m, the acting force is usually 1, and an accurate value is obtained through actual measurement in the actual design process; if the acting force between the permanent magnet M and the magnetic iron (yoke iron) is applied, C _m2y is usually 1/2, and an accurate value is obtained through actual measurement in the actual design process; if the force between the magnet (yoke) and the magnet (yoke) is recorded as C _y2y, the value is usually 1/4, and the accurate value is obtained through actual measurement in the actual design process.

Corresponding to the resultant force F ₁＝-F_1,1+F_2,1 of the force components of the magnetic domain pair D ₁＝(D_1,1,D_2,1). The above formula is used to calculate the electromagnetic attraction force in the above magnetic domains D ₁₁ and D ₂₁:

The method comprises the following steps:

Because of

F₁＝-F_1,1+F_2,1

Then there is

F₁＝F_1,linear+F_1,nonlinear

Because of

Thus, there are:

The calculation of F _1,nonlinear is also carried out,

So that the resultant force of the components of D ₁＝(D_1,1,D_2,1) is:

Corresponding to the resultant force F ₂＝F_1,2-F_2,2 of the force components of the magnetic domain pair D ₂＝(D_1,2,D_2,2). The electromagnetic attraction force in the above magnetic fields D ₁₂ and D ₁₂ is calculated as follows:

Thereby having the following characteristics

Can obtain

Because of the resultant force exerted by the first mover assembly 3

F_{First mover assembly}＝F₁+F₂

All of:

F_{First mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear＝0+0＝0

for the second sub-assembly, there is, according to the force equal to the reaction force:

From the above derivation, the following features can be seen:

We refer to the above design as a non-linear term-offset moving-iron moving-coil magnetic hybrid bone conduction vibrator or actuator design method.

Example 7

Referring to fig. 14 and 22-25, the design method of the nonlinear term-offset moving-coil magnetic hybrid vibrator device according to embodiment 5 is adopted, and the nonlinear term-offset moving-coil magnetic hybrid vibrator device comprises a vibrator body 11, wherein the vibrator body 11 comprises a first vibration transmitting sheet 1 and a second vibration transmitting sheet 2, a first rotor assembly 3 and a second rotor assembly 4, the first rotor assembly 3 comprises an iron core 31 combined structure, the second rotor assembly 4 comprises a coil magnet combined structure, the first rotor assembly 3 is arranged in an outer cylinder 5, the second rotor assembly 4 is arranged in the outer cylinder 5 and is located outside the first rotor assembly 3, the first rotor assembly 3 is fixedly connected with the first vibration transmitting sheet 1 through at least one position, the second rotor assembly 4 is fixedly connected with the second vibration transmitting sheet 2 through at least one position, the iron core 31 combined structure comprises an iron core 31 and a first magnetizer or a first non-magnetizer 32, the coil magnet combined structure comprises a pair of a magnet, a coil and a second magnetizer or a second magnetizer 4 is subjected to a pushing force from the center to the outside of the first electromagnetic assembly ₁, and the second electromagnetic assembly is simultaneously subjected to a pushing force from the two-pulling force from the center to the two-pulling force magnet assemblies 3.

The number of coils is two, C ₁ and C ₂ are respectively, the directions of currents in adjacent coils C ₁ and C ₂ are opposite, the electromagnetic fields formed by the adjacent coils C ₁ and C ₂ have the same polarity, the polarity of the magnetic fields on the two adjacent end faces is the same, the permanent magnet M ₁ is one, one end of the iron core 31 is fixed in the middle part of the first vibration transmission sheet 1, the other end of the iron core 31 is fixedly provided with a first magnetic conduction ring 33, the middle part of the iron core 31 is provided with a first magnetizer or a first non-magnetizer 32, the inner side of the outer cylinder 5 is provided with an inner cylinder 6, the permanent magnet M ₁ is fixed in the middle part of the inner wall of the inner cylinder 6, the second magnetizer or the second non-magnetizer 41 is fixed on two sides of the permanent magnet M ₁, the coils C ₁ and C ₂ are fixed on the two second magnetizers or the second non-magnetizer 41, the second vibration transmission sheet 2 is fixed on the bottom surface of the outer cylinder 5, the inner cylinder 6 is fixedly connected with the second vibration transmission sheet 2 through the vibration transmission bracket 7, the first magnetizer or the first non-magnetizer 32 is positioned between the two coils C ₁ and C ₂, the first rotor assembly 3 and the second rotor assembly 4 are in a concave-convex staggered engagement arrangement, the main magnetic force line closing curve of the coils C ₁ and C ₂ and the main magnetic force line closing curve of the permanent magnet M ₁ respectively and alternately pass through the first rotor assembly 3 and the second rotor assembly 4,2 groups of magnetic domains exist inside the vibrator body 11, the magnetic domains are combined in pairs and defined as magnetic domains D _1,1 and D _2,1,D_1,2 and D _2,2, the main magnetic force line closed curves of the coils C ₁ and C ₂ and the main magnetic force line closed curve of the permanent magnet M ₁ respectively pass through magnetic force acting fields D _1,1 and D _2,1, and in a magnetic field D _1,1, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnet M ₁, and in a magnetic field D _2,1, the magnetic force line direction of the coil C ₂ is opposite to the magnetic force line direction of the permanent magnet M ₁.

Example 8

Referring to fig. 7-8, 14 and 26, the nonlinear item cancellation moving coil magnetic hybrid vibrator device adopts the nonlinear item cancellation moving coil magnetic hybrid vibrator design method described in embodiment 5, and includes a vibrator body 11, wherein the vibrator body 11 includes a first vibration transmitting sheet 1 and a second vibration transmitting sheet 2, a first rotor assembly 3 and a second rotor assembly 4, the first rotor assembly 3 includes an iron core 31 combined structure, the second rotor assembly 4 includes a coil magnet combined structure, the first rotor assembly 3 is disposed in an outer cylinder 5, the second rotor assembly 4 is disposed in the outer cylinder 5 and is located outside the first rotor assembly 3, the first rotor assembly 3 is fixedly connected with the first vibration transmission sheet 1 through at least one position, the second rotor assembly 4 is fixedly connected with the second vibration transmission sheet 2 through at least one position, the iron core 31 assembly structure comprises an iron core 31 and a first magnetizer or a first non-magnetizer 32, the coil magnet assembly structure comprises a magnet, a coil and a second magnetizer or a second non-magnetizer 41, the coil is arranged outside the center, and outside the permanent magnet M ₁, the first rotor assembly 3 and the second rotor assembly 4 are respectively subjected to electromagnetic acting forces of pushing force and pulling force in pairs at the same time, and a push-pull type structural characteristic is shown.

The coils are two, namely C ₁ and C ₂, the directions of currents in adjacent coils C ₁ and C ₂ are opposite, for electromagnetic fields formed by adjacent coils C ₁ and C ₂, the polarities of the magnetic fields of the adjacent two end faces are the same, the permanent magnet M ₁ is one, the first vibration transmission sheet 1 is fixed on the bottom surface of the outer cylinder 5, one end of the iron core 31 is fixed in the middle part of the first vibration transmission sheet 1, the other end of the iron core 31 is fixedly provided with a first magnetic conduction ring 33, the middle part of the iron core 31 is provided with a first magnetizer or a first non-magnetizer 32, the inner side of the outer cylinder 5 is provided with an inner cylinder 6, the permanent magnet M ₁ is fixed in the middle part of the inner wall of the inner cylinder 6, the second magnetizer or the second non-magnetizer 41 is fixed on the two sides of the permanent magnet M ₁, the second magnetizer or the second non-magnetizer 41 is fixedly provided with the coils C ₁ and C2, the second vibration transmission sheet 2 and the first vibration transmission sheet 1 are of an integral structure, the second vibration transmission sheet 2 is inclined from the outer periphery of the plane where the first vibration transmission sheet 1 is positioned to extend towards the inner wall of the outer cylinder 5, one of the second magnetizers or the second non-magnetizers 41 is fixed on the second vibration transmission sheet 2, the first magnetizer or the first non-magnetizer 32 is positioned between the two coils C ₁ and C ₂, the first rotor assembly 3 and the second rotor assembly 4 are in a concave-convex staggered engagement arrangement, the main magnetic force line closing curve of the coils C ₁ and C ₂ and the main magnetic force line closing curve of the permanent magnet M ₁ respectively and alternately pass through the first rotor assembly 3 and the second rotor assembly 4, 2 groups of magnetic fields exist inside the vibrator body 11, the magnetic fields are combined in pairs and defined as magnetic fields D _1,1, D _2,1,D_1,2 and D _2,2, the main magnetic force line closed curve of the coils C ₁ and C ₂ and the main magnetic force line closed curve of the permanent magnet M ₁ respectively pass through magnetic force acting fields D _1,i and D _2,i, the magnetic force line direction of the coil C ₁ is the same as the magnetic force line direction of the permanent magnet M ₁ in the magnetic field D _1,1, and the magnetic force line direction of the coil C ₂ is opposite to the magnetic force line direction of the permanent magnet M ₁ in the magnetic field D _2,1.

Example 9

The nonlinear terms of examples 1-8 cancel the permanent magnets described in the moving-coil magnetic hybrid vibrator, or the magnets may be replaced by magnet pieces, and the coils may be replaced by coil pieces, which are all within the scope of protection of this patent.

Magnet piece: the overall magnetic field formed by a single magnet or an assembly of multiple magnets (n-magnet > 1) is equivalent to a single magnet. The magnetic field formed by the magnets in the assembly is the same as the direction of a certain dominant magnetic field/(if the magnetic field strengths of the plurality of magnets are relatively different, the magnetic field directions of the magnets can be opposite to each other, but the whole magnetic field direction is the same as the direction of the dominant magnetic field), so that the whole magnetic field generated by the magnets can be equivalently regarded as a single magnet piece. The magnets are typically connected by some rigid or flexible structure (between the magnets, or at the edges of the magnets, or around the magnets), or even without structure, by bonding, welding, embedding, screws, rivets, pins, snaps, clamping jaws, brackets, sleeves, caps, or other means.

Coil component: the overall magnetic field generated by a single coil or an assembly of multiple coils (n turns > 1) is equivalent to the magnetic field generated by a single coil; the magnetic field generated by the coils in the assembly and the magnetic field generated by a certain dominant coil have the same direction/(if the magnetic field intensities generated by the plurality of coils are relatively different, the magnetic field directions generated by the coils can be opposite, but the whole magnetic field direction is the same as the magnetic field direction generated by the dominant coil), so that the whole magnetic field generated by the coils can be equivalently regarded as the current generation in a single coil piece. The coils are typically connected by some rigid or flexible structure (between the coils, or at the edges of the coils, or around the coils), or even without structure, by bonding, welding, embedding, screws, rivets, pins, snaps, clamping jaws, brackets, sleeves, caps, or other means.

In order to describe the magnet member and the coil member in detail, the following examples are described in detail.

The magnet 201 includes the following embodiments when in use;

Embodiment one of the magnet 201:

Referring to fig. 30; the permanent magnet and the permanent magnet are combined in series in the magnetic field direction, no structural part exists in the middle, and n is magnetic=2;

The permanent magnet 1 and the permanent magnet 2 are connected by bonding, welding, riveting, inserting pins, clamping jaws, brackets, sleeves or other modes, and the directions of magnetic fields generated by the permanent magnet 1 and the permanent magnet 2 are all towards the Y+ axis direction, so the directions are the same. The combination of the permanent magnets 1 and 2 can be seen as a single magnet on the right side, which is equivalent (indicated by "=" sign in the figure) from the direction of the external overall magnetic field. The combination of the permanent magnet 1 and the permanent magnet 2 can be regarded as one magnet piece 201.

Second embodiment of magnet 201:

referring to fig. 31; the permanent magnet and the permanent magnet are combined in series in the magnetic field direction, no structural member exists in the middle, and n is equal to 3;

the permanent magnet 1, the permanent magnet 2 and the permanent magnet 3 are connected by bonding, welding, riveting, bolts, clamping jaws, brackets, sleeves or other modes, and the directions of the magnetic fields generated by the permanent magnet 1, the permanent magnet 2 and the permanent magnet 3 are all towards the Y+ axis direction, so the directions are the same. The combination of the permanent magnets 1, 2 and 3 can be seen as a single magnet on the right side of the same equivalent (indicated by "=" sign in the figure) from the direction of the external overall magnetic field. The combination of permanent magnet 1, permanent magnet 2 and permanent magnet 3 can be considered as one magnet piece 201.

Embodiment three of the magnet 201:

Referring to fig. 32; the permanent magnet and the permanent magnet are combined in series in the magnetic field direction, a structural part is arranged in the middle, and the n magnetism=2;

The permanent magnet 1 and the permanent magnet 2 are separated by a magnetizer, and the permanent magnet 1 and the magnetizer and the permanent magnet 2 and the magnetizer are connected by bonding, welding, riveting, inserting pins, clamping jaws, brackets, sleeves or other modes, and the directions of magnetic fields generated by the permanent magnet 1 and the permanent magnet 2 are all towards the Y-axis plus direction, so that the directions are the same. Therefore, the combination of the permanent magnet 1, the magnetizer, and the permanent magnet 2 can be regarded as a single magnet equivalent (indicated by "=" sign in the figure) to the right from the direction of the external overall magnetic field. The combination of the permanent magnet 1, the magnetizer and the permanent magnet 2 can be regarded as one magnet piece 201.

The upper magnetizer can be replaced by a non-magnetizer or a reverse magnet with much smaller magnetic field strength, and the whole magnet can still be equivalent to a single permanent magnet without influencing the whole magnet, so the situation also comprises the situation.

Fourth embodiment of magnet 201:

Referring to fig. 33; the permanent magnet and the permanent magnet are combined in series in the magnetic field direction, no structural part exists in the middle, and n is magnetic=2;

The permanent magnet 1 and the permanent magnet 2 are large in size, and the permanent magnet 1 and the permanent magnet 2 are small in size, and are connected through bonding, welding, riveting, bolts, clamping jaws, brackets, sleeves or other modes, and the directions of magnetic fields generated by the permanent magnet 1 and the permanent magnet 2 are all towards the Y+ axis direction, so that the directions are the same. The combination of the permanent magnets 1 and 2 can be seen as a single magnet on the right side, which is equivalent (indicated by "=" sign in the figure) from the direction of the external overall magnetic field. The combination of the permanent magnet 1 and the permanent magnet 2 can be regarded as one magnet piece 201.

Fifth embodiment of magnet 201:

Referring to fig. 34; the permanent magnet and the permanent magnet are combined in series in the magnetic field direction, a structural part is arranged in the middle, and the n magnetism=2;

Sixth embodiment of the magnet 201:

Referring to fig. 35; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n is magnetic=2;

Seventh embodiment of magnet 201:

Referring to fig. 36; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, no structural member exists in the middle, and n is equal to 3;

Eighth embodiment of magnet 201:

referring to fig. 37; the permanent magnet and the permanent magnet are mixed and combined in series and parallel in the magnetic field direction, no structural part exists in the middle, and n is equal to 3;

The permanent magnet 1, the permanent magnet 2 and the permanent magnet 3 are connected by bonding, welding, riveting, inserting pins, clamping jaws, brackets, sleeves or other modes, the directions of magnetic fields generated by the permanent magnet 1, the permanent magnet 2 and the permanent magnet 3 are all towards the Y+ axis direction, and the directions of the magnetic fields of the magnetic conduction plate 1 and the magnetic conduction plate 2 after being magnetized are also towards the Y+ axis direction, so that all directions are the same. The combination of the permanent magnet 1, the permanent magnet 2 and the permanent magnet 3, and the magnetic conductive plate 1 and the magnetic conductive plate 2 can be regarded as a single magnet equivalent (indicated by "=" in the figure) to the right from the direction of the external overall magnetic field. The combination of the permanent magnet 1, the permanent magnet 2 and the permanent magnet 3, the magnetically permeable plate 1 and the magnetically permeable plate 2 can be considered as one magnet piece 201.

The upper magnetically permeable plate may be replaced by a non-magnetically permeable plate or a counter-magnet of much smaller field strength, which may still be equivalent to a single permanent magnet without affecting the overall, and thus this case is also included in this type.

Embodiment nine of magnet 201:

referring to fig. 38; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, a structural part is arranged in the middle, and the n magnetism=2;

The upper magnetically permeable plate can also be replaced by a non-magnetically permeable body, or a reverse magnet with much smaller field strength, which does not affect the overall effect and can still be equivalent to a single permanent magnet, thus this case is also included in this type.

Embodiment ten of magnet 201:

referring to fig. 39; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n is magnetic=2;

Embodiment eleven of magnet 201:

referring to fig. 40; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, a structural part is arranged in the middle, and the n magnetism=2;

Twelve embodiments of magnet 201:

referring to fig. 41; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n is magnetic=2;

Permanent magnet 1 (ring, square ring, rectangular ring, etc.) and permanent magnet 2 (column, cylinder, square column, rectangular column, etc.) are connected by bonding, welding, riveting, bolts, clamping jaws, brackets, sleeves or other means, and the directions of the magnetic fields generated by permanent magnet 1 and permanent magnet 2 are all toward the Y+ axis direction, so the directions are the same. The combination of the permanent magnets 1 and 2 can be seen as a single magnet on the right side, which is equivalent (indicated by "=" sign in the figure) from the direction of the external overall magnetic field. The combination of the permanent magnet 1 and the permanent magnet 2 can be regarded as one magnet piece 201.

Thirteenth embodiment of magnet 201:

Referring to fig. 42; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, a structural part is arranged in the middle, and the n magnetism=2;

The permanent magnet 1 (ring, square ring, rectangular ring, etc.) and the permanent magnet 2 (column, cylinder, square column, rectangular column, etc.) are separated by a magnetic conductive ring 104, and the magnetic fields generated by the permanent magnet 1 and the permanent magnet 2 are respectively oriented to the Y-axis plus direction by bonding, welding, riveting, inserting pins, clamping claws, brackets, sleeves or other modes, so the directions are the same. Therefore, the combination of the permanent magnet 1, the magnetizer, and the permanent magnet 2 can be regarded as a single magnet equivalent (indicated by "=" sign in the figure) to the right from the direction of the external overall magnetic field. The combination of the permanent magnet 1, the magnetizer and the permanent magnet 2 can be regarded as one magnet piece 201.

The above magnetic conductive ring can be replaced by a non-magnetic conductive ring or a reverse magnetic ring with much smaller magnetic field strength, and the whole magnetic conductive ring can still be equivalent to a single permanent magnet without influencing the whole magnetic conductive ring, so the situation also comprises the situation.

Fourteen embodiments of magnet 201:

Reference is made to fig. 43; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, a structural member is arranged in the middle, and the n magnetism=2;

Permanent magnet 1 (ring, square ring, rectangular ring, etc.) and permanent magnet 2 (ring, cylinder, square column, rectangular column, etc.) are connected by bonding, welding, riveting, bolts, clamping jaws, brackets, sleeves or other means, and the directions of the magnetic fields generated by permanent magnet 1 and permanent magnet 2 are all toward the Y+ axis direction, and the directions are the same. The combination of the permanent magnets 1 and 2 can be seen as a single magnet on the right side, which is equivalent (indicated by "=" sign in the figure) from the direction of the external overall magnetic field. The combination of the permanent magnet 1 and the permanent magnet 2 can be regarded as one magnet piece 201. The core in the figures may be air, a non-magnetically conductive body or a weakly magnetically conductive body, such as a weakly magnetically conductive latch.

Fifteen embodiments of magnet 201:

Referring to fig. 44; the permanent magnet and the permanent magnet are combined in parallel in the magnetic field direction, a structural part is arranged in the middle, and the n magnetism=2;

The upper magnetic conductive connecting ring can be replaced by a non-magnetic conductive ring or a reverse magnetic ring with much smaller magnetic field strength, and the whole magnetic conductive connecting ring can be equivalent to a single permanent magnet without influencing the whole magnetic field strength, so the situation also comprises the situation.

Sixteen embodiments of magnet 201:

referring to fig. 45; the permanent magnet and the permanent magnet are mixed and combined in series and parallel in the magnetic field direction, no structural part exists in the middle, and n is equal to 5;

The permanent magnet 1, the permanent magnet 2 and the permanent magnet 3 are connected in parallel by bonding, welding, riveting, inserting pins, clamping jaws, brackets, sleeves or other modes to form an equivalent magnet (magnet 1|magnet 2|magnet 3), and the equivalent magnet (magnet 1|magnet 2|magnet 3) is connected in series with the permanent magnet 4 and the permanent magnet 5 to form an equivalent magnet (magnet 4- (magnet 1|magnet 2|magnet 3) -magnet 5). Then, the equivalent magnet (magnet 1|magnet 2|magnet 3) and the permanent magnets 4 and 5 are arranged in the same direction because the directions of the magnetic fields generated by the permanent magnets are all in the y+ axis direction. Therefore, the magnet combination (magnet 4- (magnet 1|magnet 2|magnet 3) -magnet 5) can be seen as a single magnet on the right side in a similar equivalent manner (indicated by "=" sign in the figure) from the direction of the external overall magnetic field. The magnet assembly (magnet 4- (magnet 1|magnet 2|magnet 3) -magnet 5) can be considered as one magnet piece 201.

Seventeenth embodiment of magnet 201:

referring to fig. 46; the permanent magnet and the permanent magnet are mixed and combined in series and parallel in the magnetic field direction, no structural part exists in the middle, and n is equal to 5;

The permanent magnet 1, the permanent magnet 2 and the permanent magnet 3 are connected in series by bonding, welding, riveting, inserting pins, clamping jaws, brackets, sleeves or other modes to form an equivalent magnet (magnet 1-magnet 2-magnet 3), and the equivalent magnet (magnet 1-magnet 2-magnet 3) is connected in parallel with the permanent magnet 4 and the permanent magnet 5 to form an equivalent magnet (magnet 4| (magnet 1-magnet 2-magnet 3) | magnet 5). Then, the equivalent magnets (magnet 1-magnet 2-magnet 3) are the same in the directions of the y+ axis, and the directions of the magnetic fields generated by the permanent magnets 4 and 5 are the same. Therefore, the magnet combination (magnet 4| (magnet 1-magnet 2-magnet 3) | magnet 5) can be seen as a single magnet equivalent to the right side (indicated by "=" in the figure) from the direction of the external overall magnetic field. The magnet combination (magnet 4| (magnet 1-magnet 2-magnet 3) | magnet 5) can be considered as one magnet piece 201.

Example eighteenth of magnet 201:

referring to fig. 46 a; the permanent magnet and the permanent magnet are combined in series in the magnetic field direction, no structural member exists in the middle, and the n magnetism=2

The permanent magnet 1 and the permanent magnet 2 are large in size, the permanent magnet 1 and the permanent magnet 2 are small in size, and are connected through bonding, welding, embedding, screws, spirals, riveting, bolts, buckles, clamping jaws, brackets, sleeves, pressing covers or other modes, the magnetic field direction of the permanent magnet 1 faces the Y+ axis direction, and the magnetic field direction of the permanent magnet 2 faces the Y-axis direction. However, since the magnetic field strength of the permanent magnet 2 is smaller than that of the permanent magnet 1, the combination of the permanent magnet 1 and the permanent magnet 2 can be seen as a single magnet equivalent to the right side (indicated by "=" in the figure) from the direction of the external overall magnetic field. The combination of the permanent magnet 1 and the permanent magnet 2 can be regarded as one magnet piece 201.

The coil piece 102 includes the following embodiments when in use;

Embodiment one of coil element 102:

referring to fig. 47; the coils are combined in series in the magnetic field direction, no structural part exists in the middle, and n circles are=2;

Coil 1 and coil 2 are connected by bonding, brackets, sleeves, rivets, clamping jaws, welding or other means, and the directions of the magnetic fields generated by coil 1 and coil 2 are all in the Y+ axis direction, so the directions are the same. The combination of coil 1 and coil 2, which produces an overall magnetic field, therefore, can be seen from the outside as a single coil that is equivalent (indicated by the "=" sign in the figure) to the right. The combination of coil 1 and coil 2 may be considered a coil piece 102.

In the above embodiment, no influence is exerted on the direction of the magnetic field generated by the coil current, whether there is an iron core or not in the middle of the coils, and therefore, the conclusion that the above two coils are serially combined into one coil piece 102 is not influenced.

In the following figures, the coil crosses are shown according to the usual coil current identification methodThe dot-dash icon indicates that current is flowing inward and the dot-dash icon indicates that current is flowing outward.

Second embodiment of coil element 102:

referring to fig. 48; the coils are combined in series in the magnetic field direction, the periphery of the coils is provided with a sleeve, and n circles=2;

The coils 1 and 2 are connected by a sleeve (preferably, a magnetically permeable material, or a magnetically weak material, or a magnetically non-permeable material) so that the directions of the magnetic fields generated by the coils 1 and 2 are the same in the y+ axis direction. The combination of coil 1 and coil 2, which produces an overall magnetic field, therefore, can be seen from the outside as a single coil that is equivalent (indicated by the "=" sign in the figure) to the right. The combination of coil 1 and coil 2 may be considered a coil piece 102.

Embodiment three of coil element 102:

referring to fig. 49; the coils are combined in series in the magnetic field direction, no structural part exists in the middle, and n circles=3;

Coil 1, coil 2 and coil 3 are connected by bonding, brackets, sleeves, rivets, clamping jaws, welding or other means, and the directions of the magnetic fields generated by coil 1, coil 2 and coil 3 are all in the Y+ axis direction, so the directions are the same. The combination of coil 1, coil 2 and coil 3, which produces an overall magnetic field whose direction, from the outside, can thus be seen as a single coil equivalent (indicated by the "=" sign in the figure) to the right. The combination of coil 1, coil 2 and coil 3 may be considered as one coil piece 102.

Fourth embodiment of coil element 102:

referring to fig. 50; the coils are combined in series in the magnetic field direction, a structural part is arranged in the middle, and n circles=2;

The magnetic conductors are arranged between the coil 1 and the coil 2 at intervals, and the directions of magnetic fields generated by the coil 1 and the coil 2 are the same as the directions of Y-axis +directions by bonding, supporting, sleeving, riveting, clamping jaw welding or other modes between the coil 1 and the coil 2 and between the coil 2 and the magnetic ring 104. The combination of coil 1, magnetically permeable ring 104 and coil 2 can therefore be seen as a single coil on the right side in terms of the direction of the overall magnetic field that it produces, as seen from the outside (in the figure "=" sign). The combination of coil 1, magnetically permeable ring 104 and coil 2 may be considered a coil piece 102.

The above magnetic conductive ring can be replaced by a non-magnetic conductive ring or a reverse coil with much smaller induction field strength, and the whole is still equivalent to a single coil without influencing, so that the situation also includes the case of this type.

Fifth embodiment of coil part 102:

referring to fig. 51; the coils are combined in series in the magnetic field direction, no structural part exists in the middle, and n circles are=2;

Coil 1 and coil 2, coil 1 is big, coil 2 is little, and they are connected through bonding, support, sleeve, riveting, clamping jaw, welding or other modes, and the magnetic field direction that respectively produces of coil 1 and coil 2 is the direction towards Y+ axle, so the direction is the same. The combination of coil 1 and coil 2, which produces an overall magnetic field, therefore, can be seen from the outside as a single coil that is equivalent (indicated by the "=" sign in the figure) to the right. The combination of coil 1 and coil 2 may be considered a coil piece 102.

Sixth embodiment of coil element 102:

Referring to fig. 52; the coils are combined in series in the magnetic field direction, a structural part is arranged in the middle, and n circles=2;

Seventh embodiment of coil part 102:

referring to fig. 53; the coil and the coil are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n circles=2;

The coil 1 (outer ring) and the coil 2 (inner ring) are connected by bonding, supporting, sleeving, riveting, clamping jaw, welding or other modes, and the directions of magnetic fields generated by the coil 1 and the coil 2 are all towards the Y+ axis direction, so the directions are the same. The combination of coil 1 and coil 2, which produces an overall magnetic field, therefore, can be seen from the outside as a single coil that is equivalent (indicated by the "=" sign in the figure) to the right. The combination of coil 1 and coil 2 may be considered a coil piece 102.

Eighth embodiment of coil part 102:

reference is made to fig. 54; the coil and the coil are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n circles=2;

The coil 1 (outer ring) and the coil 2 (inner ring) are connected with the iron core by bonding, supporting, sleeving, riveting, clamping jaw, welding or other modes, and the directions of magnetic fields generated by the coil 1 and the coil 2 are all towards the Y+ axis direction, so the directions are the same. The combination of coil 1, coil 2 and core, which produces an overall magnetic field with a direction that is, from the outside, similarly equivalent (indicated by the "=" sign in the figure) to the right single coil. The combination of coil 1, coil 2 and core may be considered as one coil piece 102.

Embodiment nine of coil piece 102:

referring to fig. 55; the coils are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n circles=3;

Embodiment ten of coil piece 102:

Referring to fig. 56; the coils are combined in parallel in the magnetic field direction, no structural part exists in the middle, and n circles=3;

The coil 1, the coil 2 and the coil 3, the magnetic conduction plate 1 and the magnetic conduction plate 2 are connected through adhesion, a bracket, a sleeve, riveting, clamping jaws, welding or other modes, the directions of magnetic fields generated by the coil 1, the coil 2 and the coil 3 are all towards the Y+ axis direction, and the directions of the magnetic fields generated by the magnetic conduction plate 1 and the magnetic conduction plate 2 after being magnetized are also towards the Y+ axis direction, so all directions are the same. The combination of coil 1, coil 2 and coil 3, and magnetically permeable plate 1 and magnetically permeable plate 2, thus, produces an overall magnetic field in a direction that is, from the outside, similar to a single coil on the right (indicated by the "=" sign in the figure). The combination of coil 1, coil 2 and coil 3, magnetically permeable plate 1 and magnetically permeable plate 2 may be considered as one coil piece 102.

The upper magnetically permeable plate may be replaced by a non-magnetically permeable plate or a counter-magnet of much smaller field strength, which may not affect the overall effect but may still be equivalent to a single coil, and thus this case is also included in this type.

Embodiment eleven of coil piece 102:

referring to fig. 57; the coils are combined in parallel in the magnetic field direction, a structural part is arranged in the middle, and n circles=2;

The coil 1 and the coil 2 are separated by a spacer ring (preferably made of a magnetic conductive material or a weak magnetic conductive material or a non-magnetic conductive material), and the coil 1 and the spacer ring and the coil 2 and the spacer ring are connected by bonding, supporting, sleeve, riveting, clamping jaw, welding or other modes, and the directions of magnetic fields generated by the coil 1 and the coil 2 are all towards the Y-axis plus direction, so the directions are the same. The combination of coil 1, spacer ring and coil 2, which produces an overall magnetic field with a direction that is equivalent (in the figure "=" sign) to the right single coil from the outside. The combination of coil 1, magnetic conductor and coil 2 may be considered a coil piece 102.

Twelve embodiments of coil piece 102:

Referring to fig. 58; the coils are combined in series and parallel in the magnetic field direction, no structural part exists in the middle, and n circles=4;

Coil 1 and coil 2 are connected in parallel by bonding, brackets, sleeves, rivets, clamping jaws, welding or other means to form an equivalent coil (coil 1|coil 2), which is then connected in series with coil 3 and coil 4 to form an equivalent coil (coil 3- (coil 1|coil 2) -coil 4). Then, the equivalent coil (coil 1|coil 2) and the coil 3 and the coil 4 respectively generate magnetic fields in the directions of Y+ axes, so the directions are the same. The direction of the overall magnetic field generated by the coil combination (coil 3- (coil 1|coil 2) -coil 4) can be similarly equivalent (indicated by "=" number in the figure) to that of the single coil on the right from the outside. The coil combination (coil 3- (coil 1|coil 2) -coil 4) can be regarded as one coil piece 102.

Thirteenth embodiment of coil piece 102:

referring to fig. 59; the coils are combined in series and parallel in the magnetic field direction, no structural part exists in the middle, and n circles=4;

Coil 1, coil 2 and coil 3 are connected in series by bonding, brackets, sleeves, rivets, clamping jaws, welding or other means to form an equivalent coil (coil 1-coil 2-coil 3), which equivalent coil (coil 1-coil 2-coil 3) is then connected in parallel with coil 4 to form an equivalent coil ((coil 1-coil 2-coil 3) | coil 4). Then, the directions of the magnetic fields generated by the equivalent coils (coil 1-coil 2-coil 3) and the coil 4 are all towards the Y+ axis direction, so the directions are the same. The direction of the overall magnetic field generated by the coil combination ((coil 1-coil 2-coil 3) | coil 4) can be similarly equivalent (indicated by "=" number in the figure) to that of the single coil on the right from the outside. The coil combination ((coil 1-coil 2-coil 3) | coil 4) can be regarded as one coil piece 102.

Example 10

Referring to fig. 1-59, according to the application of the nonlinear term canceling moving coil magnetic mixing vibrator design method of embodiment 1, embodiment 3, embodiment 5, embodiment 7 and embodiment 9, the nonlinear term canceling moving coil magnetic mixing vibrator obtained by the design method is applied to bone conduction headphones, bone conduction glasses, wired headphones, wireless headphones, AR glasses, VR glasses, smart watches, smart bracelets, headsets, wearable devices, smart phones, game handles, game headphones, game steering wheels, game pedals, mice, keyboards, touch screens, electric appliance control panels, touch devices, screen sounding devices, vehicle-mounted haptic feedback devices, smart cabins, game chairs, massage chairs, massagers, haptic feedback vests, haptic feedback gloves, haptic feedback leg devices, hearing aid devices, sleep aid devices or haptic feedback network interconnection devices, and when the nonlinear term canceling moving coil magnetic mixing vibrator is used for the above products, the electric energy can be converted into mechanical energy, such as vibration or mechanical motion.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The design method of the nonlinear item counteraction moving-iron moving-coil magnetic hybrid vibrator is characterized by comprising the following steps of: comprising the following conditions:

(2): the first rotor component and the second rotor component are respectively subjected to electromagnetic acting forces of pushing force and pulling force in pairs at the same time, and the structure characteristics of push-pull type are shown.

2. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 1, wherein the method is characterized by comprising the following steps of:

Defining the number of permanent magnets in the coil magnet assembly and coils in the coil assembly, the number of permanent magnets being N _{Magnetic field} and the number of coils being N _Ring(s) such that N _{Magnetic field}>N_Ring(s) or N _{Magnetic field}＜N_Ring(s);N_{Magnetic field} is 1,2,3, …,100; n _Ring(s) is 1,2,3, …,100.

3. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 1, wherein the method is characterized by comprising the following steps of:

2N magnetic domains exist in the vibrator body, wherein the magnetic domains are space regions filled with electromagnetic force energy and generally consist of air or a medium with smaller magnetic permeability (for example, the relative magnetic permeability is less than 1000), and the magnetic domains comprise regions where magnet materials are located; magnetic domains are combined in pairs, defined as magnetic domains D _1,i and D _2,i, where i=1, 2,3, …, N; the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through magnetic force acting fields D _1,i and D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet in the magnetic field D _1,i, and the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet in the magnetic field D _2,i; or in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to that of the permanent magnet, and in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as that of the permanent magnet.

4. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 1, wherein the method is characterized by comprising the following steps of:

When the magnetic force line direction of the coil passing through a certain magnetic field is the same as the magnetic force line direction of the permanent magnet, the total magnetic flux is equal to the sum of the magnetic flux generated by the coil and the magnetic flux generated by the permanent magnet; when the direction of magnetic force lines of the coil passing through a certain magnetic field is opposite to that of the permanent magnet, the total magnetic flux is equal to the difference between the magnetic flux generated by the coil and the magnetic flux generated by the permanent magnet.

5. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 1, wherein the method is characterized by comprising the following steps of:

The first and second sub-assemblies are subjected to 2N forces F _1,j and F _2,j, j=1, 2,3, …, N < = 100; each of the force components F _1,j and F _2,j contains two parts, one part being a linear term of the excitation current i and one part being a nonlinear term of the excitation current i:

for the first sub-assembly, F _{First mover assembly ,linear} =k×i;

F_{First mover assembly ,nonlinear}＝F_1,nonlinear+F_2,nonlinear＝0+0＝0；

F_{A second mover assembly ,linear}＝K*i＝-K*i；

The nonlinear terms in the component forces of the first rotor component and the second rotor component are completely or partially counteracted, and in the final total force sigma _i(F_1,i+F_2,i), the total force is partially or completely counteracted with respect to the nonlinear terms of current, the linear terms are mutually overlapped and become larger, so that the nonlinear term counteracted moving-iron moving-magnet ring hybrid vibrator is obtained.

6. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 1, wherein the method is characterized by comprising the following steps of: the iron core combination structure comprises an iron core and a first magnetizer or a first non-magnetizer; the coil magnet combination structure comprises a coil, a magnet and a second magnetizer or a second non-magnetizer.

7. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 1, wherein the method is characterized by comprising the following steps of: the coil magnet combination structure comprises a coil member, a magnet member and a second magnetizer or a second non-magnetizer, wherein the magnet member is a single magnet or an assembly of a plurality of magnets (n-magnet > 1), the magnetic field formed by the magnets in the assembly is equivalent to a single magnet, the magnetic field formed by the magnets in the assembly is the same as the direction of a certain dominant magnetic field/(if the magnetic field strengths of the plurality of magnets are relatively large, the magnetic field directions of the magnets can be opposite to each other, but the magnetic field directions of the whole magnets are the same), so that the whole magnetic field generated by the magnets can be equivalently regarded as a single magnet member, and the magnets can be usually generated by a certain hard structural member or a soft structural member (between the magnets, at the edges of the magnets or around the magnets), or even if no structural member exists, the magnets are connected by bonding, welding, embedding, screws, spirals, riveting, bolts, buckles, clamping jaws, brackets, sleeves, pressing covers or other modes.

8. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 7, wherein the method is characterized by comprising the following steps of: the coil component is a single coil or an assembly of a plurality of coils (n turns > 1), the whole magnetic field generated by the coil in the assembly is equivalent to the magnetic field generated by a single coil, the magnetic field generated by the coil in the assembly and the magnetic field generated by a leading coil are the same/(if the magnetic field generated by the plurality of coils is relatively large in intensity, the magnetic field generated by the coils can be opposite, but the whole magnetic field direction is the same as the magnetic field generated by the leading coil), so that the whole magnetic field generated by the coil component can be equivalently regarded as the current generated in a single coil component, and the coils are connected together by a hard structural member or a soft structural member (between the coils, or around the edges of the coils, or around the coils) or even without the structural member by bonding, welding, embedding, screws, spirals, rivets, bolts, buckles, clamping jaws, brackets, sleeves, covers or other modes.

9. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 2, wherein the method is characterized by comprising the following steps of: the first rotor component and the second rotor component are in concave-convex staggered mutual occlusion arrangement, and the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet alternately pass through the first rotor component and the second rotor component respectively.

10. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 2, wherein the method is characterized by comprising the following steps of: the following conditions are also included:

11. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 2, wherein the method is characterized by comprising the following steps of: the following conditions are also included:

(3.3): when N _{Magnetic field} is more than 1, polarities of two opposite end faces adjacent to the permanent magnet are the same; when N _Ring(s) is more than 1, the directions of currents in adjacent coils are opposite, the polarities of electromagnetic fields of two adjacent end faces of the adjacent coils are the same;

12. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 2, wherein the method is characterized by comprising the following steps of:

The magnetic conductor is used at the position of the shell, which is close to the coil, so that the magnetic resistance of the magnetic circuit of the electromagnet formed by the coil is as small as possible; the permanent magnets in the magnet assembly are isolated by a magnetizer; a yoke is used around the coil and the permanent magnet, or a magnetic conductive outer cylinder is used for a coil assembly and a shell close to the coil.

13. The method for designing the nonlinear term-offset moving-iron moving-coil magnetic hybrid vibrator according to claim 5, wherein the method is characterized by comprising the following steps of:

f, electromagnetic attraction force;

A magnetic flux across the medium;

S: the magnetic force lines pass through the magnetic pole area;

Mu ₀: air permeability;

N: a number of turns of the coil;

C _y2y: force between the magnet (yoke) and the magnet (yoke).

14. The nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator device adopts the nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator design method as defined in claim 11, and is characterized in that: the vibrator comprises a vibrator body, a first vibration transmission sheet and a second vibration transmission sheet of the vibrator body, a first rotor component and a second rotor component, wherein the first rotor component comprises an iron core combined structure, the second rotor component comprises a coil magnet combined structure, the first rotor component is arranged in an outer cylinder, the second rotor component is arranged in the outer cylinder and is positioned outside the first rotor component, the first rotor component is fixedly connected with the first vibration transmission sheet through at least one position, the second rotor component is fixedly connected with the second vibration transmission sheet through at least one position, the iron core combined structure comprises an iron core and a first magnetizer or a first non-magnetizer, the coil magnet combined structure comprises a coil, a permanent magnet and a second magnetizer or a second non-magnetizer, the coil is arranged inside the coil, the permanent magnet is arranged outside, the permanent magnet is two, the polarities of two adjacent two opposite end faces are the same, the coil is one, the first vibration transmission sheet is fixed on the top surface of the outer cylinder, the first vibration transmission sheet is fixedly connected with the iron core, the first magnetizer is fixedly connected with the second magnetizer at the inner side of the second inner cylinder through at least one position, the second magnetizer is fixedly connected with the second magnetizer or the second magnetizer at the two inner cylinder inner side respectively, the second magnetizer is fixedly connected with the second magnetizer or the second magnetizer is fixedly connected with the second magnetizer at the inner side of the second magnetizer, the first rotor component and the second rotor component are in concave-convex staggered occlusion arrangement, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively penetrate through the first rotor component and the second rotor component alternately, 2N magnetic domains exist in the vibrator body, the magnetic domains are combined in pairs to be defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively penetrate through magnetic force acting domains D _1,i and D _2,i, in the magnetic domain D _1,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet, and in the magnetic domain D _2,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet; in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.

15. The nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator device adopts the nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator design method as defined in claim 11, and is characterized in that: the vibrator comprises a vibrator body, a first vibration transmission sheet and a second vibration transmission sheet of the vibrator body, a first rotor assembly and a second rotor assembly, wherein the first rotor assembly comprises an iron core combined structure, the second rotor assembly comprises a coil magnet combined structure, the first rotor assembly is arranged in an outer cylinder, the second rotor assembly is arranged in the outer cylinder and is positioned outside the first rotor assembly, the first rotor assembly is fixedly connected with the first vibration transmission sheet through at least one position, the second rotor assembly is fixedly connected with the second vibration transmission sheet through at least one position, the iron core combined structure comprises an iron core and a first magnetizer or a first non-magnetizer, the coil magnet combined structure comprises a magnet, a coil and a second magnetizer or a second non-magnetizer, the coil is arranged inside the outer cylinder when seen from the center outwards, the permanent magnet is two, the polarities of two adjacent opposite end faces are the same, the coil is one, the first vibration transmission sheet is fixed on the bottom surface of the outer cylinder, the first vibration transmission sheet is fixedly connected with the iron core, the first vibration transmission sheet is fixedly connected with the second magnetizer at one end of the second inner cylinder through at least one position, the second magnetizer is fixedly connected with the second magnetizer or the second magnetizer at the middle part fixedly arranged on the outer cylinder, the second vibration transmission sheet is fixedly arranged on the outer cylinder or the middle part respectively, the second vibration transmission sheet is fixedly arranged on the outer cylinder or the second vibration transmission sheet is respectively, one of the magnetic rings is fixed on the second vibration transmission sheet, the first rotor component and the second rotor component are in concave-convex staggered occlusion arrangement, the main magnetic line closing curve of the coil and the main magnetic line closing curve of the permanent magnet respectively penetrate through the first rotor component and the second rotor component alternately, 2N magnetic domains exist in the vibrator body, the magnetic domains are combined in pairs and defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic line closing curve of the coil and the main magnetic line closing curve of the permanent magnet respectively penetrate through magnetic action domains D _1,i and D _2,i, in the magnetic domain D _1,i, the magnetic line direction of the coil is the same as the magnetic line direction of the permanent magnet, and in the magnetic domain D _2,i, the magnetic line direction of the coil is opposite to the magnetic line direction of the permanent magnet; in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.

16. The nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator device adopts the nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator design method as defined in claim 11, and is characterized in that: the vibrator comprises a vibrator body, a first vibration transmission sheet and a second vibration transmission sheet of the vibrator body, a first rotor component and a second rotor component, wherein the first rotor component comprises an iron core combined structure, the second rotor component comprises a coil magnet combined structure, the first rotor component is arranged in an outer cylinder, the second rotor component is arranged in the outer cylinder and is positioned at the outer side of the first rotor component, the first rotor component is fixedly connected with the first vibration transmission sheet through at least one position, the second rotor component is fixedly connected with the second vibration transmission sheet through at least one position, the first vibration transmission sheet is a first double-spring vibration transmission sheet device, and the first double-spring vibration transmission sheet device comprises a first vertical part and a first bending part extending along the direction of the inner wall of the outer cylinder and inclined at the periphery of the plane where the first vertical part is positioned; the second vibration transmission sheet is a first double-spring vibration transmission sheet device, the second double-spring vibration transmission sheet device comprises a second vertical part and a second bending part which extends along the direction of the inner wall of the outer cylinder along the periphery of the plane where the second vertical part is positioned, the iron core combined structure comprises an iron core and a first magnetizer or a first non-magnetizer, the coil magnet combined structure comprises a permanent magnet, a coil and a second magnetizer or a second non-magnetizer, the coil is arranged outside the outer part when seen from the center, the permanent magnet is two, the polarities of two adjacent two end faces of the permanent magnet are the same, the coil is one, the first double-spring vibration transmission sheet device is fixed on the top surface of the outer cylinder, the second double-spring vibration transmission sheet device is fixed on the bottom surface of the outer cylinder, two ends of the iron core are respectively fixed on the first vertical part of the first double-spring vibration transmission sheet device and the second vertical part of the second double-spring vibration sheet device, the first magnetizer or the second non-magnetizer is fixed on the iron core, the second magnetizer is arranged on the inner side of the second double-spring vibration transmission sheet device, the second rotator is arranged on the two outer side of the second double-spring vibration transmission sheet device and the second rotator is arranged on the two outer side of the second magnetizer respectively, the two non-spring vibration transmission sheet assemblies are respectively arranged on the two outer side of the second magnetizer or the two permanent magnet assemblies respectively, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the first rotor component and the second rotor component alternately, 2N magnetic domains exist in the vibrator body, the magnetic domains are combined in pairs to be defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through magnetic force acting domains D _1,i and D _2,i, in the magnetic domain D _1,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet, and in the magnetic domain D _2,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet; in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.

17. The nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator device adopts the nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator design method as defined in claim 10, and is characterized in that: comprises a vibrator body, a first vibration transmission sheet and a second vibration transmission sheet of the vibrator body, a first rotor component and a second rotor component, wherein the first rotor component comprises an iron core combined structure, the second rotor component comprises a coil magnet combined structure, the first rotor component is arranged in an outer cylinder, the second rotor component is arranged in the outer cylinder and is positioned outside the first rotor component, the first rotor component is fixedly connected with the first vibration transmission sheet through at least one position, the second rotor component is fixedly connected with the second vibration transmission sheet through at least one position, the iron core combined structure comprises an iron core and a first magnetizer or a first non-magnetizer, the coil magnet combined structure comprises a magnet, a coil and a second magnetizer or a second non-magnetizer, the coil is arranged inside the outer cylinder when the coil is seen from the center outwards, the number of the coils is two, the directions of currents in adjacent coils are opposite, the polarities of the magnetic fields formed by two adjacent coils are the same, the permanent magnet is one, one end of the iron core is fixed in the middle of the first vibration transmission sheet, the other end of the iron core is fixedly provided with a first magnetic conduction ring, the middle of the iron core is provided with a first magnetizer or a first non-magnetizer, the inner side of the outer cylinder is provided with an inner cylinder, the permanent magnet is fixed in the middle of the inner cylinder, the second magnetizer or the second non-magnetizer is fixed on two sides of the permanent magnet, the coils are fixed on the two second magnetizers or the second non-magnetizer, the second vibration transmission sheet is fixed on the bottom surface of the outer cylinder, the inner cylinder is fixedly connected with the second vibration transmission sheet through a vibration transmission bracket, the first magnetizer or the first non-magnetizer is positioned between the two coils, the first rotor component and the second rotor component are in concave-convex staggered occlusion arrangement, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively penetrate through the first rotor component and the second rotor component alternately, 2N magnetic domains exist in the vibrator body, the magnetic domains are combined in pairs to be defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively penetrate through magnetic force acting domains D _1,i and D _2,i, in the magnetic domain D _1,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet, and in the magnetic domain D _2,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet; in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.

18. The nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator device adopts the nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator design method as defined in claim 10, and is characterized in that: comprises a vibrator body, a first vibration transmission sheet and a second vibration transmission sheet of the vibrator body, a first rotor component and a second rotor component, wherein the first rotor component comprises an iron core combined structure, the second rotor component comprises a coil magnet combined structure, the first rotor component is arranged in an outer cylinder, the second rotor component is arranged in the outer cylinder and is positioned outside the first rotor component, the first rotor component is fixedly connected with the first vibration transmission sheet through at least one position, the second rotor component is fixedly connected with the second vibration transmission sheet through at least one position, the iron core combined structure comprises an iron core and a first magnetizer or a first non-magnetizer, the coil magnet combined structure comprises a magnet, a coil and a second magnetizer or a second non-magnetizer, the coil is arranged inside the outer cylinder when seen from the center, the two coils are outside the permanent magnet, the directions of currents in adjacent coils are opposite, the polarities of the magnetic fields of the two adjacent end faces are the same for the electromagnetic fields formed by the two adjacent coils, the permanent magnet is one, the first vibration transmission sheet is fixed on the bottom surface of the outer cylinder, one end of the iron core is fixed in the middle of the first vibration transmission sheet, the first magnetic conduction ring is fixedly arranged at the other end of the iron core, the middle of the iron core is provided with the first magnetizer or the first non-magnetizer, the inner side of the outer cylinder is provided with the inner cylinder, the permanent magnet is fixed in the middle of the inner wall of the inner cylinder, the second magnetizer or the second non-magnetizer is fixed on the two sides of the permanent magnet, the coil is fixedly arranged on the second magnetizer or the second non-magnetizer, the second vibration transmission sheet and the first vibration transmission sheet are of an integral structure, the second vibration transmission sheet extends from the outer periphery of the plane where the first vibration transmission sheet is located to the direction of the inner wall of the outer cylinder, one of the second magnetic conductor or the second non-magnetic conductor is fixed on the second vibration transmission sheet, the first magnetic conductor or the first non-magnetic conductor is located between the two coils, the first rotor component and the second rotor component are in concave-convex staggered occlusion arrangement, the main magnetic line closing curve of the coils and the main magnetic line closing curve of the permanent magnets alternately pass through the first rotor component and the second rotor component respectively, 2N magnetic domains are arranged in the vibrator body, the magnetic domains are combined in pairs, the magnetic domains are defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic line closing curve of the coils and the main magnetic line closing curve of the permanent magnets respectively pass through magnetic force acting domains D _1,i and D _2,i, in the magnetic domain D _1,i, the directions of magnetic lines of the coils and the magnetic lines of the permanent magnets are the same, and in the magnetic domain D _2,i, the directions of the magnetic lines of force of the coils and the permanent magnets are opposite; in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.

19. The nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator device adopts the nonlinear term-canceling moving-iron moving-coil magnetic hybrid vibrator design method as defined in claim 10, and is characterized in that: the vibrator comprises a vibrator body, a first vibration transmission sheet and a second vibration transmission sheet of the vibrator body, a first rotor component and a second rotor component, wherein the first rotor component comprises an iron core combined structure, the second rotor component comprises a coil magnet combined structure, the first rotor component is arranged in an outer cylinder, the second rotor component is arranged in the outer cylinder and is positioned at the outer side of the first rotor component, the first rotor component is fixedly connected with the first vibration transmission sheet through at least one position, the second rotor component is fixedly connected with the second vibration transmission sheet through at least one position, the first vibration transmission sheet is a first double-spring vibration transmission sheet device, and the first double-spring vibration transmission sheet device comprises a first vertical part and a first bending part extending along the direction of the inner wall of the outer cylinder and inclined at the periphery of the plane where the first vertical part is positioned; the second vibration-transmitting piece is a second double-spring vibration-transmitting piece device, the second double-spring vibration-transmitting piece device comprises a second vertical part and a second bending part which extends along the direction of the inner wall of the outer cylinder along the periphery of the plane where the second vertical part is positioned, the first double-spring vibration-transmitting piece device is fixed on the top surface of the outer cylinder, the second double-spring vibration-transmitting piece device is fixed on the bottom surface of the outer cylinder, the iron core combined structure comprises an iron core and a first magnetizer or a first non-magnetizer, the coil magnet combined structure comprises a magnet, a coil and a second magnetizer or a second non-magnetizer, the coil is arranged on the outside, the permanent magnet is arranged on one outside, the coils are two, the directions of currents in adjacent coils are opposite, the magnetic fields formed by the adjacent two coils are the same, the first double-spring vibration-transmitting piece device is fixed on the top surface of the outer cylinder, the second double-spring vibration-transmitting piece device is fixed on the bottom surface of the outer cylinder, the iron core is respectively fixed on the first magnetizer and the second magnetizer or the second non-magnetizer, the first magnetic magnetizer or the second magnetic magnetizer is arranged on the two sides of the vertical magnetizer, the first magnetic magnetizer or the second magnetic magnetizer is fixed on the two sides of the second magnetic magnetizer or the second magnetic magnetizer is arranged on the two sides of the vertical magnetizer, the first magnetic magnetizer or the second magnetic magnetizer is arranged on the two vertical magnetizer or the two magnetic magnetizer is arranged on the two sides, the two second magnetizers or the second non-magnetizers are respectively fixed on a first bending part of a first double-spring vibration-transmitting sheet device and a second bending part of the second double-spring vibration-transmitting sheet device, the first magnetizers or the first non-magnetizers are positioned between two coils, the first sub-component and the second sub-component are in concave-convex staggered occlusion arrangement, the main magnetic force line closing curve of the coils and the main magnetic force line closing curve of the permanent magnets respectively pass through the first sub-component and the second sub-component alternately, 2N magnetic domains exist in the vibrator body, the magnetic domains are combined in pairs and defined as magnetic domains D _1,i and D _2,i, i=1, 2,3, … and N, the main magnetic force line closing curve of the coils and the main magnetic force line closing curve of the permanent magnets respectively pass through magnetic force acting domains D _1,i and D _2,i, in the magnetic domain D _1,i, the magnetic force line directions of the coils are the same, and in the magnetic domain D _2,i, the magnetic force line directions of the coils and the magnetic force line directions of the permanent magnets are opposite; in the magnetic field D _1,i, the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet, whereas in the magnetic field D _2,i, the magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.

20. The application of the nonlinear term cancellation moving-coil magnetic hybrid vibrator design method according to any one of claims 1-13, wherein: the nonlinear item cancellation moving-iron-moving-magnet mixed vibrator obtained by the design method is applied to bone conduction headphones, bone conduction glasses, wired headphones, wireless headphones, AR glasses, VR glasses, smart watches, smart bracelets, head-mounted devices, smart phones, game handles, game headphones, game steering wheels, game pedals, mice, keyboards, touch screens, electric appliance control panels, touch devices, screen sounding devices, vehicle-mounted haptic feedback devices, smart cabins, game chairs, massage chairs, massagers, haptic feedback vests, haptic feedback gloves, haptic feedback waistbands, haptic feedback leg devices, hearing aid devices, sleep aid devices or haptic feedback network interconnection devices.