CN113297726B - Method and terminal for generating magnetic induction intensity curve of loudspeaker - Google Patents
Method and terminal for generating magnetic induction intensity curve of loudspeaker Download PDFInfo
- Publication number
- CN113297726B CN113297726B CN202110471380.7A CN202110471380A CN113297726B CN 113297726 B CN113297726 B CN 113297726B CN 202110471380 A CN202110471380 A CN 202110471380A CN 113297726 B CN113297726 B CN 113297726B
- Authority
- CN
- China
- Prior art keywords
- induction intensity
- voice coil
- magnetic induction
- intensity curve
- magnetic
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a method and a terminal for generating a magnetic induction intensity curve of a loudspeaker, and the method and the terminal are used for receiving a magnetic induction intensity curve generation request of the loudspeaker; establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model; and establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request, so that the efficiency of generating the magnetic induction intensity curve is effectively improved, and the voice coil model can be suitable for voice coils with any axisymmetry and non-axisymmetry.
Description
Technical Field
The invention relates to the field of speakers, in particular to a method and a terminal for generating a magnetic induction intensity curve of a speaker.
Background
In the prior art, two conventional calculation methods for a B (magnetic induction intensity) curve of a loudspeaker voice coil are adopted, firstly, a voice coil offset position is designated, a complete magnetic circuit model is established, a B value of the corresponding offset position is calculated, then the next voice coil offset position is designated, the operation is circulated until a B curve is obtained, a BL (product of force coefficient, magnetic induction intensity and voice coil wire length) curve is obtained according to the B curve, the same magnetic field is repeatedly calculated in each modeling calculation, the efficiency is low, the more data points of the B curve are drawn, the more accurate the fitted B curve is, but the more times of repeatedly calculating a static magnetic field are needed at the same time; in addition, if the voice coil parameters are changed, the calculation needs to be modeled again.
In the second method, although the static magnetic field is calculated only once after modeling, the offset position of the voice coil is sequentially moved, and the B value of the corresponding offset position is calculated, the voice coil is only round with respect to axisymmetry, the cross section of the voice coil is required to be rectangular, and if the voice coil is in a non-axisymmetric shape, the voice coil is degraded into the first method.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the method and the terminal for generating the magnetic induction intensity curve of the loudspeaker can improve the efficiency of generating the magnetic induction intensity curve.
In order to solve the technical problems, the invention adopts a technical scheme that:
a method for generating a magnetic induction intensity curve of a loudspeaker comprises the following steps:
receiving a magnetic induction intensity curve generation request of a loudspeaker;
establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
and establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
In order to solve the technical problems, the invention adopts another technical scheme that:
a terminal for generating a loudspeaker magnetic induction intensity curve, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
receiving a magnetic induction intensity curve generation request of a loudspeaker;
establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
and establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
The invention has the beneficial effects that: the method comprises the steps of defining generalized stretching on a magnetic path geometric model of a loudspeaker, solving to obtain static magnetic field spatial distribution, establishing a voice coil model, calling the static magnetic field spatial distribution to obtain a magnetic induction intensity curve of the loudspeaker, and not carrying out modeling calculation for a plurality of times for a plurality of specified different voice coil offset positions and carrying out modeling calculation again after voice coil parameters are changed.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for generating a magnetic induction intensity curve of a speaker according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a method for generating a magnetic induction intensity curve of a speaker according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for generating a magnetic induction intensity curve of a speaker according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a magnetic circuit geometric model and an air domain model without voice coil introduced in a method for generating a magnetic induction intensity curve of a speaker according to an embodiment of the present invention;
FIG. 5 is a sectional view of a static magnetic field spatial distribution obtained by solving in a method for generating a magnetic induction intensity curve of a speaker according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a rectangular voice coil model with irregular cross sections imported in a method for generating a magnetic induction intensity curve of a loudspeaker according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a B curve obtained by solving in the method for generating a magnetic induction intensity curve of a speaker according to an embodiment of the present invention.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a method for generating a magnetic induction intensity curve of a speaker, including the steps of:
receiving a magnetic induction intensity curve generation request of a loudspeaker;
establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
and establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
From the above description, the beneficial effects of the invention are as follows: the method comprises the steps of defining generalized stretching on a magnetic path geometric model of a loudspeaker, solving to obtain static magnetic field spatial distribution, establishing a voice coil model, calling the static magnetic field spatial distribution to obtain a magnetic induction intensity curve of the loudspeaker, and not carrying out modeling calculation for a plurality of times for a plurality of specified different voice coil offset positions and carrying out modeling calculation again after voice coil parameters are changed.
Further, the establishing a magnetic circuit geometric model of the speaker according to the magnetic induction intensity curve generating request, defining generalized stretching for the magnetic circuit geometric model, and calculating the static magnetic field spatial distribution of the magnetic circuit geometric model includes:
establishing a first three-dimensional component according to the magnetic induction intensity curve generation request, and adding a magnetic field physical field interface of the loudspeaker into the first three-dimensional component;
establishing a magnetic circuit geometric model of the loudspeaker in the first three-dimensional component;
defining material properties of the magnetic circuit geometric model;
defining boundary conditions for the magnetic field physical field interface;
defining generalized stretching for the magnetic circuit geometric model, and carrying out grid division;
and calculating the geometric model of the magnetic circuit by using a steady state solving mode to obtain the spatial distribution of the static magnetic field.
As can be seen from the above description, by defining the material properties of the magnetic path geometric model, defining the boundary conditions for the magnetic field physical field interface, defining the generalized stretching for the magnetic path geometric model, performing grid division, and calculating by using the steady state solving mode, the static magnetic field spatial distribution is obtained, the model is a magnetic path set model without voice coil, the independent calculation of the static magnetic field spatial distribution is realized, the generalized stretching is defined, the static magnetic field spatial distribution can be accurately mapped in the voice coil model during the subsequent call, and the accuracy of the subsequent calculation of the magnetic induction intensity value is improved.
Further, the establishing the voice coil model of the speaker, calling the static magnetic field spatial distribution, calculating the magnetic induction intensity values corresponding to the plurality of voice coil offset positions, and obtaining the magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request includes:
establishing a second three-dimensional assembly, and establishing a voice coil model of the loudspeaker in the second three-dimensional assembly;
defining a voice coil integration domain for the voice coil model, and calling the magnetic field space distribution;
and carrying out parameterized scanning on a plurality of voice coil offset positions of the voice coil model, and calculating magnetic induction intensity values corresponding to the voice coil offset positions respectively to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
From the above description, the static magnetic field spatial distribution calculated before the call is called, the magnetic induction intensity values corresponding to the plurality of voice coil offset positions are obtained by using parameterized scanning calculation, and finally the magnetic induction intensity curve is obtained, so that the magnetic induction intensity calculation is realized without recalculating the static magnetic field spatial distribution, and the generation efficiency of the magnetic induction intensity curve is improved.
Further, the method further comprises the steps of:
receiving a force coefficient curve generation request of the loudspeaker;
acquiring the length of a voice coil wire corresponding to the voice coil model according to the force coefficient curve generation request;
and calculating based on the length of the voice coil wire and the magnetic induction intensity curve to obtain a force coefficient curve corresponding to the force coefficient curve generation request.
From the above description, after the magnetic induction intensity curve is obtained, the force coefficient curve of the loudspeaker can be further obtained, so that the research of the loudspeaker is more comprehensive and efficient.
Further, the voice coil model of the loudspeaker is built, the static magnetic field spatial distribution is called, magnetic induction intensity values corresponding to a plurality of voice coil offset positions are calculated, and a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request is obtained and replaced by:
receiving different voice coil models aiming at the loudspeaker to obtain a voice coil model set;
for each voice coil model in the voice coil model set, calling the static magnetic field space distribution to generate a magnetic induction intensity curve corresponding to each voice coil model;
comparing the magnetic induction intensity curves corresponding to each voice coil model to determine an optimal magnetic induction intensity curve;
and determining a corresponding voice coil model according to the optimal magnetic induction intensity curve.
It can be seen from the above description that, for each voice coil model in the voice coil model set of the speaker, the static magnetic field spatial distribution is invoked to generate a magnetic induction intensity curve corresponding to each voice coil model, and then the magnetic induction intensity curves are compared to determine the voice coil model corresponding to the optimal magnetic induction intensity curve.
Referring to fig. 2, another embodiment of the present invention provides a terminal for generating a magnetic induction intensity curve of a speaker, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:
receiving a magnetic induction intensity curve generation request of a loudspeaker;
establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
and establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
From the above description, the beneficial effects of the invention are as follows: the method comprises the steps of defining generalized stretching on a magnetic path geometric model of a loudspeaker, solving to obtain static magnetic field spatial distribution, establishing a voice coil model, calling the static magnetic field spatial distribution to obtain a magnetic induction intensity curve of the loudspeaker, and not carrying out modeling calculation for a plurality of times for a plurality of specified different voice coil offset positions and carrying out modeling calculation again after voice coil parameters are changed.
Further, the establishing a magnetic circuit geometric model of the speaker according to the magnetic induction intensity curve generating request, defining generalized stretching for the magnetic circuit geometric model, and calculating the static magnetic field spatial distribution of the magnetic circuit geometric model includes:
establishing a first three-dimensional component according to the magnetic induction intensity curve generation request, and adding a magnetic field physical field interface of the loudspeaker into the first three-dimensional component;
establishing a magnetic circuit geometric model of the loudspeaker in the first three-dimensional component;
defining material properties of the magnetic circuit geometric model;
defining boundary conditions for the magnetic field physical field interface;
defining generalized stretching for the magnetic circuit geometric model, and carrying out grid division;
and calculating the geometric model of the magnetic circuit by using a steady state solving mode to obtain the spatial distribution of the static magnetic field.
As can be seen from the above description, by defining the material properties of the magnetic path geometric model, defining the boundary conditions for the magnetic field physical field interface, defining the generalized stretching for the magnetic path geometric model, performing grid division, and calculating by using the steady state solving mode, the static magnetic field spatial distribution is obtained, the model is a magnetic path set model without voice coil, the independent calculation of the static magnetic field spatial distribution is realized, the generalized stretching is defined, the static magnetic field spatial distribution can be accurately mapped in the voice coil model during the subsequent call, and the accuracy of the subsequent calculation of the magnetic induction intensity value is improved.
Further, the establishing the voice coil model of the speaker, calling the static magnetic field spatial distribution, calculating the magnetic induction intensity values corresponding to the plurality of voice coil offset positions, and obtaining the magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request includes:
establishing a second three-dimensional assembly, and establishing a voice coil model of the loudspeaker in the second three-dimensional assembly;
defining a voice coil integration domain for the voice coil model, and calling the magnetic field space distribution;
and carrying out parameterized scanning on a plurality of voice coil offset positions of the voice coil model, and calculating magnetic induction intensity values corresponding to the voice coil offset positions respectively to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
From the above description, the static magnetic field spatial distribution calculated before the call is called, the magnetic induction intensity values corresponding to the plurality of voice coil offset positions are obtained by using parameterized scanning calculation, and finally the magnetic induction intensity curve is obtained, so that the magnetic induction intensity calculation is realized without recalculating the static magnetic field spatial distribution, and the generation efficiency of the magnetic induction intensity curve is improved.
Further, the method further comprises the steps of:
receiving a force coefficient curve generation request of the loudspeaker;
acquiring the length of a voice coil wire corresponding to the voice coil model according to the force coefficient curve generation request;
and calculating based on the length of the voice coil wire and the magnetic induction intensity curve to obtain a force coefficient curve corresponding to the force coefficient curve generation request.
From the above description, after the magnetic induction intensity curve is obtained, the force coefficient curve of the loudspeaker can be further obtained, so that the research of the loudspeaker is more comprehensive and efficient.
Further, the voice coil model of the loudspeaker is built, the static magnetic field spatial distribution is called, magnetic induction intensity values corresponding to a plurality of voice coil offset positions are calculated, and a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request is obtained and replaced by:
receiving different voice coil models aiming at the loudspeaker to obtain a voice coil model set;
for each voice coil model in the voice coil model set, calling the static magnetic field space distribution to generate a magnetic induction intensity curve corresponding to each voice coil model;
comparing the magnetic induction intensity curves corresponding to each voice coil model to determine an optimal magnetic induction intensity curve;
and determining a corresponding voice coil model according to the optimal magnetic induction intensity curve.
It can be seen from the above description that, for each voice coil model in the voice coil model set of the speaker, the static magnetic field spatial distribution is invoked to generate a magnetic induction intensity curve corresponding to each voice coil model, and then the magnetic induction intensity curves are compared to determine the voice coil model corresponding to the optimal magnetic induction intensity curve.
The method and the terminal for generating the magnetic induction intensity curve of the loudspeaker can be suitable for generating the magnetic induction intensity curve of the loudspeaker of any type of voice coil, such as axisymmetric voice coils, non-axisymmetric voice coils, voice coils with regular geometric cross sections and voice coils with irregular geometric cross sections, and the method and the terminal are described in the following specific embodiments:
example 1
Referring to fig. 1 and 3-5, a method for generating a magnetic induction intensity curve of a speaker according to the present embodiment includes the steps of:
s1, receiving a magnetic induction intensity curve generation request of a loudspeaker;
s2, establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
the method comprises the steps of establishing a first three-dimensional component according to a magnetic induction intensity curve generation request, and adding a magnetic field physical field interface of the loudspeaker into the first three-dimensional component;
establishing a magnetic circuit geometric model of the loudspeaker in the first three-dimensional component;
defining material properties of the magnetic circuit geometric model;
defining boundary conditions for the magnetic field physical field interface;
defining generalized stretching for the magnetic circuit geometric model, and carrying out grid division;
calculating the magnetic circuit geometric model by using a steady state solving mode to obtain the spatial distribution of a static magnetic field;
specifically, as shown in fig. 3, the S2 includes:
s21, creating an empty model, and adding a component 'three-dimensional' in a root node (root) to complete the establishment of a first three-dimensional component;
s22, selecting and adding an AC/DC-electromagnetic field-magnetic field (mf) physical field in the component 1 to finish adding a magnetic field physical field interface;
s23, importing a magnetic circuit geometric model file without a voice coil into the geometry 1 to finish the establishment of a magnetic circuit geometric model, as shown in fig. 4;
s24, selecting a sphere from the geometric 1, and adding an air domain, as shown in FIG. 4;
s25, selecting an empty material from materials, setting soft magnetic material properties, and finishing definition of the material properties;
s26, loading a magnetic steel BH curve (magnetization curve);
s27, selecting 'magnetic flux conservation' in a 'magnetic field', setting an inner magnetic steel boundary condition, an outer magnetic steel boundary condition and setting inner washer, outer washer and yoke boundary conditions, and finishing definition of the boundary conditions;
s28, selecting all domains in the source selection of the non-local coupling-generalized stretching to finish definition of generalized stretching;
s29, selecting finer in the unit size of the grid 1 to finish grid division;
s291, select "general study among" addition studies "in root node (root): steady state ", using a steady state solution mode;
s292, solving to obtain static magnetic field spatial distribution, as shown in FIG. 5;
and S3, establishing a voice coil model of the loudspeaker, calling the spatial distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
Example two
Referring to fig. 3 and 6-7, the present embodiment further defines how to generate a magnetic induction intensity curve based on the first embodiment, specifically:
establishing a second three-dimensional assembly, and establishing a voice coil model of the loudspeaker in the second three-dimensional assembly;
defining a voice coil integration domain for the voice coil model, and calling the magnetic field space distribution;
performing parameterized scanning on a plurality of voice coil offset positions of the voice coil model, and calculating magnetic induction intensity values corresponding to the voice coil offset positions respectively to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request;
specifically, as shown in fig. 3, the step S3 includes:
31. adding a component 'three-dimensional' in a root node (root), and completing the establishment of a second three-dimensional component;
32. a voice coil geometric model file is imported in the importing 2 of the assembly 2-geometric 2, and the establishment of a rectangular voice coil model with an irregular and abnormal cross section is completed, as shown in fig. 6;
33. selecting 'non-local coupling-integration' from 'component 2-definition', and selecting a voice coil domain to finish the definition of the voice coil integration domain;
34. the "cell size" in "grid 2" selects "finer";
35. "Add study" selection "general study in root node (root): steady state ", at" study 2-step 1: steady state "value of the factor variable" calls study 1: steady state solution, completing the calling of magnetic field space distribution;
36. selecting a parameterized scan in "study 2", adding a voice coil displacement profile "range (-0.5,0.1,0.5)", scanning the value of the voice coil movement position, and dragging the parameterized scan to "step 1: before steady state ", B (magnetic induction intensity) values corresponding to the voice coil offset positions are completed;
37. solving;
38. post-processing results, and drawing a B curve as shown in FIG. 7;
preferably, the generation of the B curve can be realized by pertinently developing corresponding software.
Example III
The present embodiment further defines how to generate a force coefficient curve of the speaker based on the first embodiment or the second embodiment, specifically:
receiving a force coefficient curve generation request of the loudspeaker;
acquiring the length of a voice coil wire corresponding to the voice coil model according to the force coefficient curve generation request;
calculating based on the length of the voice coil wire and the magnetic induction intensity curve to obtain a force coefficient curve corresponding to the force coefficient curve generation request;
specifically, a B curve is known, the voice coil wire length L of the voice coil model is obtained, and the B curve is multiplied by the voice coil wire length L, that is, b×l, to obtain a BL curve (force coefficient curve).
Example IV
The present embodiment further defines how to improve the development efficiency of the speaker based on the first embodiment, the second embodiment, or the third embodiment, specifically:
the step S3 can be replaced by:
receiving different voice coil models aiming at the loudspeaker to obtain a voice coil model set;
for each voice coil model in the voice coil model set, calling the static magnetic field space distribution to generate a magnetic induction intensity curve corresponding to each voice coil model;
comparing the magnetic induction intensity curves corresponding to each voice coil model to determine an optimal magnetic induction intensity curve;
determining a corresponding voice coil model according to the optimal magnetic induction intensity curve;
the different voice coil models can comprise axisymmetric voice coil models, such as circular voice coils and square voice coils, non-axisymmetric voice coil models, or only voice coil parameters are changed between the different voice coil models, such as changing balance positions and changing the shape of a cross section;
in addition, assuming that 10 data points are needed for generating a B curve, 10 different B curves of the voice coil schemes are calculated, if a first method in the background technology is used, 100 times (10 x 10) of a three-dimensional magnetic circuit model are needed to be calculated, if a second method is used, only 10 times of a magnetic circuit model of a voice coil with two-dimensional axisymmetry and rectangular cross section can be calculated, the invention only needs to calculate 1 time of the magnetic circuit model, and the magnetic circuit model can be a three-dimensional non-axisymmetric model;
the more and more accurate the data points of the B curve, the more different voice coil schemes are favorable for comparison so as to select the optimal design scheme, therefore, the B curve generating efficiency and the loudspeaker research and development efficiency of the invention are far higher than those of the first method and the second method.
Example five
Referring to fig. 2, a terminal for generating a magnetic induction intensity curve of a speaker includes a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the steps of the first, second, third or fourth embodiments when executing the computer program.
In summary, the method and the terminal for generating the magnetic induction intensity curve of the loudspeaker provided by the invention receive the magnetic induction intensity curve generation request of the loudspeaker, establish the magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, define generalized stretching for the magnetic circuit geometric model, calculate to obtain the static magnetic field spatial distribution, realize independent calculation of the static magnetic field spatial distribution, define generalized stretching, enable the static magnetic field spatial distribution to be accurately mapped in the voice coil model during subsequent calling, and improve the accuracy of the magnetic induction intensity value calculated subsequently; the voice coil model of the loudspeaker is built, the static magnetic field space distribution is called, the magnetic induction intensity values corresponding to a plurality of voice coil offset positions are calculated, the magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request is obtained, the magnetic induction intensity calculation is realized, and the part can be replaced by: receiving different voice coil models aiming at a loudspeaker to obtain a voice coil model set, calling the space distribution of a static magnetic field for each voice coil model, generating a magnetic induction intensity curve corresponding to each voice coil model, comparing the magnetic induction intensity curves, determining an optimal magnetic induction intensity curve, determining the corresponding voice coil model according to the optimal magnetic induction intensity curve, converting any voice coil model in the same magnetic circuit for multiple times, not only needing to recalculate the space distribution of the static magnetic field, but also improving the research and development efficiency of the loudspeaker, and after the magnetic induction intensity curve is obtained, calculating the magnetic induction intensity curve based on the length of a voice coil wire, further obtaining a force coefficient curve of the loudspeaker, so that the research of the loudspeaker is more comprehensive and efficient.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (8)
1. The method for generating the magnetic induction intensity curve of the loudspeaker is characterized by comprising the following steps:
receiving a magnetic induction intensity curve generation request of a loudspeaker;
establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request;
the establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating the static magnetic field space distribution of the magnetic circuit geometric model comprises the following steps:
establishing a first three-dimensional component according to the magnetic induction intensity curve generation request, and adding a magnetic field physical field interface of the loudspeaker into the first three-dimensional component;
establishing a magnetic circuit geometric model of the loudspeaker in the first three-dimensional component;
defining material properties of the magnetic circuit geometric model;
defining boundary conditions for the magnetic field physical field interface;
defining generalized stretching for the magnetic circuit geometric model, and carrying out grid division;
and calculating the geometric model of the magnetic circuit by using a steady state solving mode to obtain the spatial distribution of the static magnetic field.
2. The method for generating a magnetic induction intensity curve of a speaker according to claim 1, wherein the creating a voice coil model of the speaker and calling the static magnetic field spatial distribution, calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions, and obtaining a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request comprises:
establishing a second three-dimensional assembly, and establishing a voice coil model of the loudspeaker in the second three-dimensional assembly;
defining a voice coil integration domain for the voice coil model, and calling the magnetic field space distribution;
and carrying out parameterized scanning on a plurality of voice coil offset positions of the voice coil model, and calculating magnetic induction intensity values corresponding to the voice coil offset positions respectively to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
3. The method of generating a magnetic induction intensity curve of a speaker of claim 2, further comprising the steps of:
receiving a force coefficient curve generation request of the loudspeaker;
acquiring the length of a voice coil wire corresponding to the voice coil model according to the force coefficient curve generation request;
and calculating based on the length of the voice coil wire and the magnetic induction intensity curve to obtain a force coefficient curve corresponding to the force coefficient curve generation request.
4. The method for generating a magnetic induction intensity curve of a speaker according to claim 1, wherein the steps of creating a voice coil model of the speaker, calling the spatial distribution of the static magnetic field, calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions, and replacing the magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request with:
receiving different voice coil models aiming at the loudspeaker to obtain a voice coil model set;
for each voice coil model in the voice coil model set, calling the static magnetic field space distribution to generate a magnetic induction intensity curve corresponding to each voice coil model;
comparing the magnetic induction intensity curves corresponding to each voice coil model to determine an optimal magnetic induction intensity curve;
and determining a corresponding voice coil model according to the optimal magnetic induction intensity curve.
5. A terminal for generating a magnetic induction intensity curve of a loudspeaker, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program is executed by the processor to carry out the steps of:
receiving a magnetic induction intensity curve generation request of a loudspeaker;
establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating to obtain the static magnetic field spatial distribution of the magnetic circuit geometric model;
establishing a voice coil model of the loudspeaker, calling the space distribution of the static magnetic field, and calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request;
the establishing a magnetic circuit geometric model of the loudspeaker according to the magnetic induction intensity curve generation request, defining generalized stretching for the magnetic circuit geometric model, and calculating the static magnetic field space distribution of the magnetic circuit geometric model comprises the following steps:
establishing a first three-dimensional component according to the magnetic induction intensity curve generation request, and adding a magnetic field physical field interface of the loudspeaker into the first three-dimensional component;
establishing a magnetic circuit geometric model of the loudspeaker in the first three-dimensional component;
defining material properties of the magnetic circuit geometric model;
defining boundary conditions for the magnetic field physical field interface;
defining generalized stretching for the magnetic circuit geometric model, and carrying out grid division;
and calculating the geometric model of the magnetic circuit by using a steady state solving mode to obtain the spatial distribution of the static magnetic field.
6. The terminal for generating a magnetic induction intensity curve of a speaker according to claim 5, wherein the establishing a voice coil model of the speaker and calling the static magnetic field spatial distribution, calculating magnetic induction intensity values corresponding to a plurality of voice coil offset positions, and obtaining a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request comprises:
establishing a second three-dimensional assembly, and establishing a voice coil model of the loudspeaker in the second three-dimensional assembly;
defining a voice coil integration domain for the voice coil model, and calling the magnetic field space distribution;
and carrying out parameterized scanning on a plurality of voice coil offset positions of the voice coil model, and calculating magnetic induction intensity values corresponding to the voice coil offset positions respectively to obtain a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request.
7. The speaker magnetization curve generating terminal according to claim 6, further comprising the steps of:
receiving a force coefficient curve generation request of the loudspeaker;
acquiring the length of a voice coil wire corresponding to the voice coil model according to the force coefficient curve generation request;
and calculating based on the length of the voice coil wire and the magnetic induction intensity curve to obtain a force coefficient curve corresponding to the force coefficient curve generation request.
8. The terminal for generating a magnetic induction intensity curve of a speaker according to claim 5, wherein the voice coil model of the speaker is built, the static magnetic field spatial distribution is called, magnetic induction intensity values corresponding to a plurality of voice coil offset positions are calculated, and a magnetic induction intensity curve corresponding to the magnetic induction intensity curve generation request is obtained by substituting:
receiving different voice coil models aiming at the loudspeaker to obtain a voice coil model set;
for each voice coil model in the voice coil model set, calling the static magnetic field space distribution to generate a magnetic induction intensity curve corresponding to each voice coil model;
comparing the magnetic induction intensity curves corresponding to each voice coil model to determine an optimal magnetic induction intensity curve;
and determining a corresponding voice coil model according to the optimal magnetic induction intensity curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110471380.7A CN113297726B (en) | 2021-04-29 | 2021-04-29 | Method and terminal for generating magnetic induction intensity curve of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110471380.7A CN113297726B (en) | 2021-04-29 | 2021-04-29 | Method and terminal for generating magnetic induction intensity curve of loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113297726A CN113297726A (en) | 2021-08-24 |
| CN113297726B true CN113297726B (en) | 2023-06-06 |
Family
ID=77321736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110471380.7A Active CN113297726B (en) | 2021-04-29 | 2021-04-29 | Method and terminal for generating magnetic induction intensity curve of loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113297726B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252559A (en) * | 2014-08-29 | 2014-12-31 | 浙江中科电声研发中心 | Numerical simulation analysis method for multi-field coupling of loudspeaker |
| CN108563813A (en) * | 2018-02-28 | 2018-09-21 | 青岛昌盛日电太阳能科技股份有限公司 | One kind being used for photovoltaic step-up transformer magnetic field analysis |
| CN112243183A (en) * | 2019-07-19 | 2021-01-19 | 歌尔股份有限公司 | Magnetic potential loudspeaker and electronic equipment thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368281B (en) * | 2011-11-14 | 2013-12-18 | 浙江中科电声研发中心 | Numerical value simulating method for loudspeaker magnetic circuit system |
| CN104408227A (en) * | 2014-10-28 | 2015-03-11 | 浙江中科电声研发中心 | Loudspeaker distortion feature value simulation analysis method |
| CN105163246A (en) * | 2015-08-12 | 2015-12-16 | 歌尔声学股份有限公司 | Voice coil wire, voice coil made of voice coil wire, loudspeaker and vibration motor |
| CN107820169A (en) * | 2017-10-18 | 2018-03-20 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for improving loudspeaker sensitivity |
| WO2019134162A1 (en) * | 2018-01-08 | 2019-07-11 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN112243188B (en) * | 2019-07-19 | 2023-04-14 | 歌尔股份有限公司 | Transducer magnetic circuit structure, transducer and electronic equipment thereof |
| CN112203196A (en) * | 2020-10-15 | 2021-01-08 | 精拓丽音科技（北京）有限公司 | Magnetic circuit structure and loudspeaker |
-
2021
- 2021-04-29 CN CN202110471380.7A patent/CN113297726B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252559A (en) * | 2014-08-29 | 2014-12-31 | 浙江中科电声研发中心 | Numerical simulation analysis method for multi-field coupling of loudspeaker |
| CN108563813A (en) * | 2018-02-28 | 2018-09-21 | 青岛昌盛日电太阳能科技股份有限公司 | One kind being used for photovoltaic step-up transformer magnetic field analysis |
| CN112243183A (en) * | 2019-07-19 | 2021-01-19 | 歌尔股份有限公司 | Magnetic potential loudspeaker and electronic equipment thereof |
Non-Patent Citations (1)
| Title |
|---|
| 动圈式扬声器驱动力的数值分析研究;陆晓;温周斌;徐楚林;孙勤明;;电声技术(08);第24-27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113297726A (en) | 2021-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109918805B (en) | BIM (building information modeling) -based component collision analysis method, device and equipment | |
| JP2013225318A (en) | Grouping pixels to be textured | |
| CN109920059A (en) | Ultra-large overlapping grid concurrent assembly method based on auxiliary grid | |
| CN113297726B (en) | Method and terminal for generating magnetic induction intensity curve of loudspeaker | |
| CN114239237A (en) | Power distribution network simulation scene generation system and method supporting digital twinning | |
| CN112182886B (en) | Engineering model generation method and device, computer equipment and storage medium | |
| CN104778752A (en) | Method and device for establishing human body model | |
| CN115048707B (en) | Edge component splitting method based on building information model | |
| US11263289B2 (en) | Generating optimized geometries | |
| CN115221787A (en) | Cylindrical permanent magnet linear motor multi-objective optimization method and system based on NSGA-II | |
| Rosetea et al. | Genetic graph drawing | |
| CN114896729A (en) | Method and system for designing magnet by using induced current | |
| CN114296444A (en) | Ant colony algorithm-based raster path planning method, system, equipment and storage medium | |
| US9117312B2 (en) | System and method for preventing pinches and tangles in animated cloth | |
| CN113792362B (en) | Step-by-step recommendation method for mechanical design scheme | |
| CN113256757B (en) | Contour line rapid generation method, device and medium based on inverse distance weighted interpolation | |
| CN113626985B (en) | Method and device for generating motor rotor structure, computer equipment and storage medium | |
| CN115630556B (en) | Motor topology optimization method based on vertex method | |
| CN112764650B (en) | Graph scaling method and device, electronic equipment and storage medium | |
| KR20120099994A (en) | Method, apparatus and system for dense graph simplification, recording medium for the same | |
| Im et al. | Optimization of the coil shape in deflection yoke considering practical coil winding processes | |
| JP3905373B2 (en) | MESH GENERATION METHOD, MESH GENERATION DEVICE, COMPUTER PROGRAM, AND RECORDING MEDIUM | |
| CN117953172A (en) | Terrain model generation method, device, equipment and storage medium | |
| CN116842774A (en) | Multi-domain multi-layer collaborative simulation and life prediction method for complex customized products | |
| CN114637925A (en) | SVD + + and UBCF algorithm-based hybrid recommendation method |
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 |