CN113422496B - High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof - Google Patents

High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof Download PDF

Info

Publication number
CN113422496B
CN113422496B CN202110521206.9A CN202110521206A CN113422496B CN 113422496 B CN113422496 B CN 113422496B CN 202110521206 A CN202110521206 A CN 202110521206A CN 113422496 B CN113422496 B CN 113422496B
Authority
CN
China
Prior art keywords
spiral
magnetic
permanent magnet
winding
harmonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110521206.9A
Other languages
Chinese (zh)
Other versions
CN113422496A (en
Inventor
凌志健
康梅
赵文祥
吉敬华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu University
Original Assignee
Jiangsu University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu University filed Critical Jiangsu University
Priority to CN202110521206.9A priority Critical patent/CN113422496B/en
Priority to PCT/CN2021/095723 priority patent/WO2022236870A1/en
Priority to GB2208487.5A priority patent/GB2614105A/en
Publication of CN113422496A publication Critical patent/CN113422496A/en
Application granted granted Critical
Publication of CN113422496B publication Critical patent/CN113422496B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The invention discloses a high-positioning-precision mixed magnetic source magnetic screw and a multi-harmonic cooperative modulation method thereof, wherein the high-positioning-precision mixed magnetic source magnetic screw comprises a magnetic nut and a magnetic screw rod which are coaxially arranged; according to the characteristics of the spiral structure, through the space matching of the permanent magnet and the magnetic modulation module, a new effective harmonic order is introduced, so that the modulation mechanism in the linear direction is satisfied, the modulation mechanism in the circumferential direction is satisfied, and multi-harmonic cooperative modulation is realized; an excitation winding is wound in the magnetic adjusting module, so that the air gap field of the magnetic lead screw can be adjusted, and the positioning precision is improved. The invention provides a high-positioning-precision mixed magnetic source magnetic lead screw, which solves the defects of single magnetic field modulation, large magnetic leakage, insufficient positioning precision and the like of the conventional magnetic lead screw on the premise of ensuring high reliability and high thrust density.

Description

High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof
Technical Field
The invention relates to a high-positioning-precision hybrid magnetic source magnetic screw and a multi-harmonic cooperative modulation design method, in particular to a spiral magnetic transmission and hybrid magnetic source magnetic field modulation technology, which is suitable for high-positioning-precision and high-thrust-density application occasions such as aerospace and high-end machine tools and belongs to the technical field of design and manufacture of novel electric actuators.
Background
The magnetic lead screw has the characteristics of high thrust density, no contact friction, simple maintenance and the like, so the magnetic lead screw has good application prospect in the fields of aerospace, ocean power generation and the like. At present, most researches on the magnetic screw are carried out on N, S-pole spirally alternating surface-mounted magnetic screws which are radially magnetized by permanent magnets, and the structure has the defects of single magnetic field modulation, large magnetic leakage, unadjustable air gap magnetic field and the like.
The documents IEEE Transactions on Industrial Electronics,65(9):7536-7547,2018(Design optimization and test of a radially magnetized magnetic scale with distributed PMs) describe a surface-mounted magnetic screw with radially magnetized helical permanent magnets N, S alternately facing the electrical iron rod. Compared with other linear drivers, the structure can greatly improve thrust density and increase air gap magnetic induction intensity, but the introduced magnetic lead screw has the defects of single magnetic field modulation, high magnetic leakage, unadjustable air gap magnetic field and the like, so that the thrust density and the positioning top level are influenced, and the application of the magnetic lead screw in high-dynamic fields such as aerospace and the like is restricted.
The document IEEE Transactions on Magnetics,50(11):8205004, 2014(Electromagnetic lead screw for reactive wave energy application) describes an Electromagnetic magnetic lead screw, in which an electrical iron rod is made into a spiral-shaped slot structure, a coil is wound in the slot, and direct current is passed through the coil, so that a spiral magnetic circuit is obtained. The structure can realize the adjustment of the air gap magnetic field of the magnetic lead screw and improve the positioning precision, but the introduced electric excitation type magnetic lead screw is provided. Due to the adoption of an electric excitation mode, the magnetic induction intensity can be obviously reduced. The generated thrust density is less than one fourth of that of the permanent magnet type magnetic screw. Therefore, the thrust density of the magnetic lead screw is improved by adopting an effective method under the premise of realizing the adjustability of the air gap magnetic field, and the method has important theoretical significance and practical value.
The Chinese invention patent ZL201610821273.1 discloses a magnetic field modulation type magnetic screw, in fact, the magnetic screw is a magnetic screw structure meeting magnetic field modulation, rotor permanent magnets are spirally and alternately distributed in N, S poles, and the number of pole pairs in the linear direction is pr(ii) a The mover is composed of a spiral electric iron ring, and the number of pole pairs in the linear direction is nt(ii) a The stator permanent magnets are spirally and alternately distributed with N, S poles, and the number of pole pairs in the linear direction is ps(ii) a And satisfy ps＝nt-prLinear magnetic field modulation relationship of (1). The structure is composed of three parts, namely a rotor, a stator and a rotor, and two layers of air gaps exist, so that the manufacturing complexity is greatly increased. The documents IEEE Transactions on Industry Applications,54(6):5736-5747,2018(design and experimental testing a magnetic acquired lead scanner), designs and manufactures a magnetic field modulation type magnetic lead screw model, and experimentally verifies the magnetic field modulation effect of the magnetic lead screw, wherein the actually measured thrust is less than 40% of theoretical analysis due to the problems of manufacturing complexity, processing precision and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a high-positioning-precision mixed magnetic source magnetic screw and a multi-harmonic cooperative modulation mechanism thereof, overcomes the defects of single magnetic field modulation, non-adjustable air gap magnetic field and the like of the existing magnetic screw on the premise of ensuring reliability and economy, and obviously improves the force energy density and positioning precision of the existing permanent magnet actuator.
Specifically, the high-positioning-precision hybrid magnetic source magnetic screw provided by the invention is realized by adopting the following technical scheme: a high-positioning-precision mixed magnetic source magnetic screw comprises a magnetic nut (1) and a magnetic screw rod (2) from outside to inside in sequence, wherein the magnetic nut and the magnetic screw rod are coaxially arranged; an air gap is arranged between the magnetic nut (1) and the magnetic screw rod (2), and the length of the air gap is selected according to the size and the requirement of the magnetic screw rod.
The magnetic nut (1) consists of an axially magnetized spiral permanent magnet A1, a spiral permanent magnet A2 and a spiral magnetism regulating module B1, wherein the magnetizing directions of the spiral permanent magnet A1 and the spiral permanent magnet A2 point to the spiral magnetism regulating module B1; the lead of the spiral permanent magnet A1, the spiral permanent magnet A2 and the spiral magnetism regulating module B1 is lambda;
the magnetic lead screw (2) consists of an axially magnetized spiral permanent magnet A3, a spiral permanent magnet A4, a spiral magnetism regulating module B2, a spiral winding C1 and a spiral winding C2, wherein the magnetizing directions of the spiral permanent magnet A3 and the spiral permanent magnet A4 point to the spiral magnetism regulating module B2; the current directions of the spiral winding C1 and the spiral winding C2 are opposite, when the thrust density of the mixed magnetic source magnetic screw is improved at a fixed working point, the amplitude of the spiral winding C1 is a positive value, and the amplitude of the spiral winding C2 is a negative value, and similarly, when the thrust density of the mixed magnetic source magnetic screw is reduced at the fixed working point, the amplitude of the spiral winding C1 is a negative value, and the amplitude of the spiral winding C2 is a positive value, and the air gap magnetic field of the mixed magnetic source magnetic screw is adjusted by changing the amplitudes and the directions of the currents of the spiral winding C1 and the spiral winding C2. The lead of the spiral permanent magnet A3, the spiral permanent magnet A4, the spiral magnetism regulating module B2, the spiral winding C1 and the spiral winding C2 are lambda;
in the magnetic nut (1), after passing through a spiral magnetic adjusting module B1, odd harmonic amplitudes of 1 time, 3 times, 5 times and the like are generated in the axial direction and the circumferential direction respectively by permanent magnetic fields generated by a spiral permanent magnet A1 and a spiral permanent magnet A2; in the magnetic screw rod (2), the permanent magnetic fields generated by the spiral permanent magnet A3 and the spiral permanent magnet A4 generate harmonic orders the same as those of the magnetic nut (1) after passing through the spiral magnetism adjusting module B2, and the harmonic amplitudes are adjusted by adjusting the amplitudes and directions of currents in the spiral winding C1 and the spiral winding C2, so that multi-harmonic cooperative modulation of the magnetic nut (1) and the magnetic screw rod (2) is realized.
Furthermore, the magnetizing directions of the spiral permanent magnet A1 and the spiral permanent magnet A2 point to the spiral magnetism regulating module B1, and the magnetizing directions of the spiral permanent magnet A3 and the spiral permanent magnet A4 point to the spiral magnetism regulating module B2.
Furthermore, in the magnetic nut (1), the lead of the spiral permanent magnet A1, the spiral permanent magnet A2 and the spiral magnetism regulating module B1 are all lambda, so that the axial lengths of the spiral permanent magnet A1 and the spiral permanent magnet A2 are consistent, and the axial lengths of the spiral permanent magnet A1 and the spiral permanent magnet A2 are lpm＝λ/2-ltWherein l istIs the axial length of the magnetism regulating module B1;
furthermore, in the magnetic screw rod (2), the lead of the spiral permanent magnet A3, the spiral permanent magnet A4, the spiral magnetism regulating module B2, the spiral winding C1 and the spiral winding C2 are all lambda, so that the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are ensured to be consistent, and the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are lpm＝λ/2-ltWherein l istFor the axial length of the magnetic regulating module B2, the width l of the modulation teeth of the magnetic regulating module B2r＝(lt-2la)/3，laIs the spiral slot width of the spiral winding C1, the spiral winding C2.
A high-positioning-precision hybrid magnetic source magnetic screw and a multi-harmonic cooperative modulation design method thereof comprise the following steps:
step 1, in a magnetic nut (1), all the lead lengths of a spiral permanent magnet A1, a spiral permanent magnet A2 and a spiral magnetism regulating module B1 are lambda, so that the lead lengths of the spiral permanent magnet A3, the spiral permanent magnet A4, a spiral magnetism regulating module B2, a spiral winding C1 and a spiral winding C2 in a magnetic lead screw (2) are kept consistent;
step 2, ensuring the length of the spiral lead lambdaUnder the condition of consistent degree, the axial lengths of the spiral permanent magnet A1, the spiral permanent magnet A2, the spiral permanent magnet A3 and the spiral permanent magnet A4 are ensured to be lpmThe axial lengths of the spiral magnetic adjusting module B2 and the spiral magnetic adjusting module B1 are ltThe shapes of the spiral magnetic regulating module B1 and the spiral magnetic regulating module B2 are designed to be in an E-shaped structure, and the width of the modulation teeth of the E-shaped structure in the modulation module is lrThe multi-harmonic cooperative modulation mechanism of the spiral magnetic field is met;
and 3, under the condition of meeting the multi-harmonic cooperative modulation mechanism of the spiral magnetic field, the sections of the magnetic nut (1) and the magnetic screw rod (2) in the linear direction and the circumferential direction are cut, and the 1, 3 and 5-order axial harmonic magnetic fields can be obtained by extracting the linear air gap flux density in one axial lead lambda. In the same way, the circumferential air gap flux density in one circumference 2 pi is extracted, so that 1, 3 and 5 circumferential harmonic magnetic fields with the same order can be obtained, and the modulation mechanism in the linear direction and the circumferential direction are met;
step 4, winding two groups of spiral windings, namely a spiral winding C1 and a spiral winding C2, in an E-shaped groove of a spiral magnetism adjusting module B2 of the magnetic screw rod (2), wherein when the mixed magnetic source magnetic screw rod improves thrust density at a fixed working point, the amplitude of the spiral winding C1 is a positive value, and the amplitude of the spiral winding C2 is a negative value; on the contrary, when the thrust density of the mixed magnetic source magnetic screw is reduced at a fixed working point, the amplitude of the spiral winding C1 is a negative value, and the amplitude of the spiral winding C2 is a positive value, and currents with different directions and amplitudes are introduced into the spiral winding C1 and the spiral winding C2 according to actual operation conditions, so that the adjustment of an air gap magnetic field is realized, and further harmonic amplitudes of different orders are adjusted;
and 5, carrying out Fourier harmonic analysis on the air gap flux densities in the circumferential direction and the linear direction before and after modulation, verifying the feasibility of the modulation principle, and verifying the thrust density and the positioning accuracy of the magnetic screw rod.
The invention has the following beneficial effects:
1. according to the invention, through the spatial configuration of the magnetic regulating module and the permanent magnet, the multi-harmonic cooperative modulation of the spiral permanent magnet magnetic field is realized, and the thrust density is further improved;
2. according to the invention, the spiral winding is wound in the magnetic adjusting module, so that the magnetic force lead screw air gap magnetic field can be adjusted, and the positioning precision is further improved;
3. the invention obviously improves the thrust density and the positioning precision while realizing the multi-harmonic cooperative modulation of the mixed magnetic source, and the permanent magnet is arranged between the magnetic adjusting modules in the invention, thereby reducing the flux leakage between poles;
in conclusion, the high-positioning-precision hybrid magnetic source magnetic force screw realizes torque-thrust conversion by three-dimensional spiral magnetic transmission, not only meets the magnetic field modulation in the axial linear direction, but also meets the magnetic field modulation in the radial circumferential direction, and compared with the traditional linear actuator, the high-positioning-precision hybrid magnetic source magnetic force screw can remarkably improve the thrust and the torque density; compared with the traditional magnetic lead screw, the structure adopts the spiral magnetic field modulation, and the excitation winding is wound in the magnetic modulation module, so that the positioning precision is further improved while the high-force energy density transmission is ensured, and the magnetic force adjusting device is particularly suitable for the fields of aerospace, high-end machine tools and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a radial and axial cross-sectional view of the inventive structure; (a) is a radial section; (b) is an axial section;
FIG. 3 is a schematic view of the positioning accuracy adjustment of the present invention; (a) is a schematic diagram of positioning accuracy; (b) the thrust adjustable range is adopted;
FIG. 4 is a schematic view of the magnetic field distribution of the present invention; (a) is the position opposite to the magnetic pole; (b) the position of the thrust can be adjusted;
FIG. 5 is a graph of an air gap flux density harmonic spectrum analysis of the present invention;
FIG. 6 is a thrust force adjustability of the present invention;
in the figure: 1. the magnetic coil comprises a magnetic nut 2, a magnetic wire rod, A1, a magnetic nut helical magnet 1, A2, a magnetic nut helical magnet 2, B1, a magnetic nut magnetism regulating module, A3, a magnetic wire rod helical magnet 1, A4, a magnetic wire rod helical magnet 2, B2, a magnetic wire rod magnetism regulating module, C1, a helical winding 1, C2 and a helical winding 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention discloses a multi-harmonic cooperative modulation design of a high-positioning-precision mixed magnetic source magnetic screw, which comprises the following steps:
step 1, in a magnetic nut (1), all the lead lengths of a spiral permanent magnet A1, a spiral permanent magnet A2 and a spiral magnetism regulating module B1 are lambda, so that the lead lengths of the spiral permanent magnet A3, the spiral permanent magnet A4, a spiral magnetism regulating module B2, a spiral winding C1 and a spiral winding C2 in a magnetic lead screw (2) are kept consistent;
step 2, under the condition of ensuring the consistent spiral lead lambda length, the axial lengths of the spiral permanent magnet A1, the spiral permanent magnet A2, the spiral permanent magnet A3 and the spiral permanent magnet A4 are all required to be ensured to be lpmThe axial lengths of the spiral magnetic adjusting module B2 and the spiral magnetic adjusting module B1 are ltThe shapes of the spiral magnetic regulating module B1 and the spiral magnetic regulating module B2 are designed to be in an E-shaped structure, and the width of the modulation teeth of the E-shaped structure in the modulation module is lrThe multi-harmonic cooperative modulation mechanism of the spiral magnetic field is met;
step 3, under the condition of meeting the multi-harmonic cooperative modulation mechanism of the spiral magnetic field, the sections of the magnetic nut (1) and the magnetic screw rod (2) in the linear direction and the circumferential direction are cut, and the axial harmonic magnetic fields of 1, 3 and 5 times can be obtained by extracting the linear air gap flux density in one axial lead lambda; in the same way, the circumferential air gap flux density in one circumference 2 pi is extracted, so that 1, 3 and 5 circumferential harmonic magnetic fields with the same order can be obtained, and the modulation mechanism in the linear direction and the circumferential direction are met;
step 4, winding two groups of spiral windings, namely a spiral winding C1 and a spiral winding C2, in an E-shaped groove of a spiral magnetism adjusting module B2 of the magnetic wire rod (2), and introducing currents with different directions and amplitudes into the spiral winding C1 and the spiral winding C2 according to actual operation conditions to realize adjustment of an air gap magnetic field and further adjust harmonic amplitudes of different orders;
and 5, carrying out Fourier harmonic analysis on the air gap flux densities in the circumferential direction and the linear direction before and after modulation, verifying the feasibility of the modulation principle, and verifying the thrust density and the positioning accuracy of the magnetic screw rod.
The magnetizing directions of the spiral permanent magnet A1 and the spiral permanent magnet A2 point to the spiral magnetism regulating module B1, and the magnetizing directions of the spiral permanent magnet A3 and the spiral permanent magnet A4 point to the spiral magnetism regulating module B2.
In the magnetic lead screw (2), the lead of the spiral permanent magnet A3, the spiral permanent magnet A4, the spiral magnetism regulating module B2, the spiral winding C1 and the spiral winding C2 are all lambda, so that the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are ensured to be consistent, and the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are lpm＝λ/2-ltWherein l istFor the axial length of the magnetic regulating module B2, the width l of the modulation teeth of the magnetic regulating module B2r＝(lt-2la)/3，laIs the spiral slot width of the spiral winding C1, the spiral winding C2.
As shown in fig. 1, the invention discloses a high-positioning-precision hybrid magnetic source magnetic screw and a method for a multi-harmonic cooperative modulation mechanism thereof, wherein a magnetic nut (1) is composed of a spiral permanent magnet A1, a spiral permanent magnet A2 and a spiral magnetism adjusting module B1, and the magnetizing directions of the spiral permanent magnet A1 and the spiral permanent magnet A2 point to the spiral magnetism adjusting module B1;
the magnetic lead screw (1) consists of a spiral permanent magnet A3, a spiral permanent magnet A4, a spiral magnetism regulating module B2, a spiral winding C1 and a spiral winding C2, wherein the magnetizing directions of the spiral permanent magnet A3 and the spiral permanent magnet A4 point to the spiral magnetism regulating module B2; the spiral winding C1 and the spiral winding C2 are wound in modulation teeth of the magnetic adjusting module B2, and the directions of currents led in the spiral winding C1 and the spiral winding C2 are opposite, so that the air gap magnetic field adjustment of the magnetic lead screw with the mixed magnetic source is realized;
as shown in fig. 2, when the structure of the present invention is cut in the axial direction and the radial direction, the axial harmonic magnetic fields of 1, 3, and 5 orders can be obtained in the linear air gap flux density within the axial lead λ. In the same way, in the circumferential air gap flux density in the circumference 2 pi, the circumferential harmonic magnetic fields of the same order of 1, 3 and 5 can be obtained, so that the modulation mechanism in the linear direction and the modulation mechanism in the circumferential direction are met, and the multi-harmonic cooperative modulation is realized;
as shown in fig. 3, in the modulation module B2, an "E-shaped" modulation tooth design is adopted, and meanwhile, in the "E-shaped" structure, a spiral winding C1 and a spiral winding C2 are wound to realize the adjustment of an air gap magnetic field, thereby realizing the thrust adjustment of a fixed working point and improving the positioning accuracy;
as shown in fig. 4, by adjusting the axial length l of the helical permanent magnetpmAxial length l of spiral magnetic regulating moduletAnd the width l of the modulation teeth of the spiral magnetic modulation modulerThe parameters are equal, the space parallel optimization of the permanent magnetic field and the excitation magnetic field in the mixed magnetic source is realized, and the magnetic field coupling of the mixed magnetic source is reduced as much as possible;
as shown in fig. 5, due to the adoption of the spiral modulation structure, compared with the single modulation effect of the conventional spiral magnetic screw, harmonic orders of 3 times, 5 times and the like are introduced, and the amplitude of the harmonic is adjusted by adjusting the directions and amplitudes of the spiral winding C1 and the spiral winding C2, so that the thrust range of the fixed working point is adjusted, and the positioning accuracy of the magnetic screw is improved, as shown in fig. 6.

Claims (7)

1. A high-positioning-precision mixed magnetic source magnetic force lead screw is characterized by comprising a magnetic nut (1) and a magnetic lead screw (2) from outside to inside in sequence, wherein the magnetic nut and the magnetic lead screw are coaxially arranged; an air gap is formed between the magnetic nut (1) and the magnetic screw rod (2), and the length of the air gap is selected according to the size and the requirement of the magnetic screw rod;
the magnetic nut (1) is formed by a unit consisting of an axially magnetized spiral permanent magnet A1, a spiral magnetism regulating module B1 and a spiral permanent magnet A2, and a plurality of units are sequentially arranged;
the magnetic lead screw (2) is composed of a unit consisting of a spiral permanent magnet A3 magnetized axially, a spiral permanent magnet A4, a spiral magnetism adjusting module B2, a spiral winding C1 and a spiral winding C2, wherein the units are sequentially arranged to form the spiral magnetism adjusting module, and the spiral winding C1 and the spiral winding C2 are wound on the B2, wherein the current directions of the spiral winding C1 and the spiral winding C2 are opposite, when the thrust density of the mixed magnetic source magnetic lead screw is increased at a fixed working point, the amplitude of the spiral winding C1 is a positive value, and the amplitude of the spiral winding C2 is a negative value, and similarly, when the thrust density of the mixed magnetic source magnetic lead screw is decreased at the fixed working point, the amplitude of the spiral winding C1 is a negative value, and the amplitude of the spiral winding C2 is a positive value, and the magnetic field adjustment of the mixed magnetic source magnetic lead screw is realized by changing the amplitudes and the directions of the currents of the spiral winding C1 and the spiral winding C2;
in the magnetic nut (1), after passing through a spiral magnetism adjusting module B1, the permanent magnetic fields generated by the spiral permanent magnet A1 and the spiral permanent magnet A2 respectively generate odd harmonic amplitudes of 1 time, 3 times and 5 times in the axial direction and the circumferential direction; similarly, in the magnetic screw rod (2), after passing through the spiral magnetism adjusting module B2, the permanent magnetic fields generated by the spiral permanent magnet A3 and the spiral permanent magnet A4 generate harmonic orders the same as those of the magnetic nut (1), and the harmonic amplitudes are adjusted by adjusting the amplitudes and directions of currents in the spiral winding C1 and the spiral winding C2, so that multi-harmonic cooperative modulation of the magnetic nut (1) and the magnetic screw rod (2) is realized;
the magnetizing directions of the spiral permanent magnet A1 and the spiral permanent magnet A2 point to the spiral magnetism regulating module B1, and the magnetizing directions of the spiral permanent magnet A3 and the spiral permanent magnet A4 point to the spiral magnetism regulating module B2.
2. The high-positioning-precision hybrid magnetic source magnetic screw rod as claimed in claim 1, wherein in the magnetic nut (1), the lead of each of the spiral permanent magnet A1, the spiral permanent magnet A2 and the spiral magnetism adjusting module B1 is λ, so that the axial lengths of the spiral permanent magnet A1 and the spiral permanent magnet A2 are consistent, and the axial lengths of the spiral permanent magnet A1 and the spiral permanent magnet A2 are lpm＝λ/2-ltWherein l istIs the axial length of the magnetic tuning module B1.
3. The high-positioning-precision hybrid magnetic source magnetic screw rod according to claim 1, wherein in the magnetic screw rod (2), the lead of each of the spiral permanent magnet A3, the spiral permanent magnet A4, the spiral magnetism adjusting module B2, the spiral winding C1 and the spiral winding C2 is lambda, so that the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are consistent, and the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are lpm＝λ/2-ltWherein l istFor the axial length of the magnetic regulating module B2, the width l of the modulation teeth of the magnetic regulating module B2r＝(lt-2la)/3，laIs the spiral slot width of the spiral winding C1, the spiral winding C2.
4. The high-positioning-accuracy hybrid magnetic source magnetic screw rod as claimed in claim 1, wherein the shapes of the spiral magnetic adjustment module B1 and the spiral magnetic adjustment module B2 are designed to be an "E-shaped" structure.
5. A multi-harmonic cooperative modulation design method of the high positioning precision hybrid magnetic source magnetic screw as claimed in claim 1,
the method is characterized by comprising the following steps:
step 1, in a magnetic nut (1), all the lead lengths of a spiral permanent magnet A1, a spiral permanent magnet A2 and a spiral magnetism regulating module B1 are lambda, so that the lead lengths of the spiral permanent magnet A3, the spiral permanent magnet A4, a spiral magnetism regulating module B2, a spiral winding C1 and a spiral winding C2 in a magnetic lead screw (2) are kept consistent;
step 2, under the condition of ensuring the consistent spiral lead lambda length, ensuring that the axial lengths of the spiral permanent magnet A1, the spiral permanent magnet A2, the spiral permanent magnet A3 and the spiral permanent magnet A4 are all lpmThe axial lengths of the spiral magnetic adjusting module B2 and the spiral magnetic adjusting module B1 are ltThe shapes of the spiral magnetic regulating module B1 and the spiral magnetic regulating module B2 are designed into an E-shaped structure, and the width of the modulation teeth of the E-shaped structure in the modulation module is lrThe multi-harmonic cooperative modulation mechanism of the spiral magnetic field is met;
step 3, under the condition of meeting the multi-harmonic cooperative modulation mechanism of the spiral magnetic field, the sections of the magnetic nut (1) and the magnetic screw rod (2) in the linear direction and the circumferential direction are cut, and the axial harmonic magnetic fields of 1, 3 and 5 times can be obtained by extracting the linear air gap flux density in one axial lead lambda; in the same way, the circumferential air gap flux density in one circumference 2 pi is extracted, so that 1, 3 and 5 circumferential harmonic magnetic fields with the same order can be obtained, and the modulation mechanism in the linear direction and the circumferential direction are met;
step 4, winding two groups of spiral windings, namely a spiral winding C1 and a spiral winding C2, in an E-shaped groove of a spiral magnetism adjusting module B2 of the magnetic screw rod (2), wherein when the mixed magnetic source magnetic screw rod improves thrust density at a fixed working point, the amplitude of the spiral winding C1 is a positive value, and the amplitude of the spiral winding C2 is a negative value; on the contrary, when the thrust density of the magnetic screw with the mixed magnetic source is reduced at a fixed working point, the amplitude of the spiral winding C1 is a negative value, and the amplitude of the spiral winding C2 is a positive value, and currents with different directions and amplitudes are introduced into the spiral winding C1 and the spiral winding C2 according to the actual operation working condition, so that the adjustment of an air gap magnetic field is realized, and further, the harmonic amplitudes of different orders are adjusted;
and 5, carrying out Fourier harmonic analysis on the air gap flux densities in the circumferential direction and the linear direction before and after modulation, verifying the feasibility of the modulation principle, and verifying the thrust density and the positioning accuracy of the magnetic screw rod.
6. The multi-harmonic cooperative modulation design method of the high-positioning-precision hybrid magnetic source magnetic screw rod as claimed in claim 5, wherein the magnetizing directions of the spiral permanent magnet A1 and the spiral permanent magnet A2 point to the spiral magnetization adjusting module B1, and the magnetizing directions of the spiral permanent magnet A3 and the spiral permanent magnet A4 point to the spiral magnetization adjusting module B2, and the spiral permanent magnetic field is led out through the magnetization adjusting module according to the principle of minimum magnetic resistance in both matching modes.
7. The multi-harmonic cooperative modulation design method of the high-positioning-precision hybrid magnetic source magnetic screw rod according to claim 5, wherein in the magnetic screw rod (2), the leads of the spiral permanent magnet A3, the spiral permanent magnet A4, the spiral magnetism adjusting module B2, the spiral winding C1 and the spiral winding C2 are all lambda, and the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are ensured to be consistent, so that the axial lengths of the spiral permanent magnet A3 and the spiral permanent magnet A4 are lpm＝λ/2-ltWherein l istFor the axial length of the magnetic regulating module B2, the width l of the modulation teeth of the magnetic regulating module B2r＝(lt-2la)/3，laIs the spiral slot width of the spiral winding C1, the spiral winding C2.
CN202110521206.9A 2021-05-13 2021-05-13 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof Active CN113422496B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202110521206.9A CN113422496B (en) 2021-05-13 2021-05-13 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof
PCT/CN2021/095723 WO2022236870A1 (en) 2021-05-13 2021-05-25 Hybrid magnetic source magnetic lead screw having high positioning precision, and multi-harmonic collaborative modulation method therefor
GB2208487.5A GB2614105A (en) 2021-05-13 2021-05-25 Hybrid magnetic source magnetic lead screw having high positioning precision, and multi-harmonic collaborative modulation method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110521206.9A CN113422496B (en) 2021-05-13 2021-05-13 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof

Publications (2)

Publication Number Publication Date
CN113422496A CN113422496A (en) 2021-09-21
CN113422496B true CN113422496B (en) 2022-06-21

Family

ID=77712396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110521206.9A Active CN113422496B (en) 2021-05-13 2021-05-13 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof

Country Status (2)

Country Link
CN (1) CN113422496B (en)
WO (1) WO2022236870A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115626146A (en) * 2022-09-21 2023-01-20 清华大学 Hydraulic braking supercharging device, braking system and vehicle
CN116232004B (en) * 2023-02-28 2023-09-26 江苏大学 Magnetic screw actuator based on three-dimensional modulation effect and design method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101656458A (en) * 2008-08-24 2010-02-24 刘忠臣 Linear permanent magnet driver and magnetic levitation vehicle rail system
CN105006950A (en) * 2015-08-03 2015-10-28 哈尔滨工业大学 Inductor type magnetic screw based on permanent-magnetic excitation and electrical excitation
CN106655680A (en) * 2017-02-25 2017-05-10 兰州交通大学 Adjustable-magnetic rotation motor
CN107733206A (en) * 2017-10-27 2018-02-23 江苏大学 A kind of permanent magnetism body surface embedded magnetic Screw and its processing method
CN107896047A (en) * 2017-11-22 2018-04-10 哈尔滨工业大学 Simplex winding composite excitation magnetic Screw
CN108336837A (en) * 2018-02-26 2018-07-27 江苏大学 A kind of composite excitation direct driving motor
CN111509948A (en) * 2020-03-23 2020-08-07 江苏大学 Multi-degree-of-freedom magnetic field modulation type magnetic screw actuator and integrated design method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2439111B (en) * 2006-06-16 2009-10-07 Univ Sheffield Magnetic gear
CN107070031B (en) * 2017-05-15 2020-07-14 华中科技大学 Rotor, stator and multi-working harmonic permanent magnet motor
CN110729873B (en) * 2019-11-18 2020-11-24 上海海事大学 Air gap field adjustable hybrid excitation magnetic lead screw

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101656458A (en) * 2008-08-24 2010-02-24 刘忠臣 Linear permanent magnet driver and magnetic levitation vehicle rail system
CN105006950A (en) * 2015-08-03 2015-10-28 哈尔滨工业大学 Inductor type magnetic screw based on permanent-magnetic excitation and electrical excitation
CN106655680A (en) * 2017-02-25 2017-05-10 兰州交通大学 Adjustable-magnetic rotation motor
CN107733206A (en) * 2017-10-27 2018-02-23 江苏大学 A kind of permanent magnetism body surface embedded magnetic Screw and its processing method
CN107896047A (en) * 2017-11-22 2018-04-10 哈尔滨工业大学 Simplex winding composite excitation magnetic Screw
CN108336837A (en) * 2018-02-26 2018-07-27 江苏大学 A kind of composite excitation direct driving motor
CN111509948A (en) * 2020-03-23 2020-08-07 江苏大学 Multi-degree-of-freedom magnetic field modulation type magnetic screw actuator and integrated design method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
磁力丝杠集成电作动器的关键技术研究;凌志健;《工程科技Ⅱ辑》;20210115;全文 *

Also Published As

Publication number Publication date
WO2022236870A1 (en) 2022-11-17
CN113422496A (en) 2021-09-21

Similar Documents

Publication Publication Date Title
Soderlund et al. A permanent-magnet generator for wind power applications
CN113422496B (en) High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof
CN110729873B (en) Air gap field adjustable hybrid excitation magnetic lead screw
Zhang et al. A novel transverse-flux moving-magnet linear oscillatory actuator
Ling et al. Design of a new magnetic screw with discretized PMs
CN105680656B (en) A kind of axial arrangement magneto
Zhang et al. Design and analysis of a novel frequency modulation secondary for high-speed permanent magnet linear synchronous motor
Luo et al. Design of end-iron-free voice coil motor with appropriate PM length ratio
CN112994402B (en) Stator split type moving iron core type permanent magnet linear oscillation motor
Morimura et al. Single Halbach field magnet desined from dual Halbach field magnet for rotating machines
Wen et al. Research on improved permanent magnet linear synchronous motor for direct-drive application
CN104319975A (en) Single-groove unipolar cylindrical moving-magnet linear alternating-current generator
CN112671135B (en) Method for optimizing four-section Halbach array surface-mounted permanent magnet motor
Di Stefano et al. Tubular linear permanent magnet actuator with fractional slots
Arof et al. Permanent magnet linear generator design using finite element method
Wang et al. Performance comparison of tubular flux-switching permanent magnet machines using soft magnetic composite material and hybrid material magnetic cores
Wijaya et al. Optimum Permanent Magnets Configuration in Flat-Quasi Linear Permanent Magnet Generators.
CN116232004B (en) Magnetic screw actuator based on three-dimensional modulation effect and design method thereof
CN109510337A (en) A kind of double-stator permanent magnet generator of alternating poles
GB2614105A (en) Hybrid magnetic source magnetic lead screw having high positioning precision, and multi-harmonic collaborative modulation method therefor
CN210724526U (en) Linear oscillation motor
CN209982197U (en) Like-pole excitation motor
He et al. Optimization and design of super hybrid stepping motor based on the 3D finite element analysis
Chen Design of Spindle Permanent Magnet Synchronous Motor and Comparative Analysis of Different Core Materials
CN216873055U (en) Two-stage permanent magnet cylindrical transverse flux permanent magnet linear motor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant