CN110849613B - A voice coil actuator dynamic characteristic testing device and system - Google Patents

Abstract

Translated fromChinese

本发明公开了一种音圈作动器动特性测试装置及系统，所述装置包括：壳体，包括由上至下依次固定连接的上壳体、外壳体和下壳体，所述上壳体、外壳体均为空心结构；拉压力传感器，通过螺钉固定在下壳体内侧；传感器支座，通过螺纹固定在所述拉压力传感器上，并通过螺钉与音圈作动器的永磁体下端面固定连接；弹性膜片，夹固设置在所述上壳体、外壳体之间；加速度传感器，固定在所述弹性膜片上端面中部；嵌件，固定地嵌入设置在所述弹性膜片下端面中部；导柱，与所述音圈作动器的线圈骨架固定连接，所述导柱的上端与嵌件中部固定连接，下端与所述永磁体的中心孔轴向滑动配合。本发明结构简单、可靠性高、测试结果准确、方便测试音圈作动器的动质量。

The invention discloses a dynamic characteristic testing device and system of a voice coil actuator. The device comprises: a casing, including an upper casing, an outer casing and a lower casing that are fixedly connected in sequence from top to bottom; the upper casing The outer casing and the outer casing are hollow structures; the tension pressure sensor is fixed on the inner side of the lower casing by screws; the sensor support is fixed on the tension pressure sensor through threads, and is connected to the lower end face of the permanent magnet of the voice coil actuator through screws Fixed connection; elastic diaphragm, clamped between the upper casing and outer casing; acceleration sensor, fixed in the middle of the upper end face of the elastic diaphragm; insert, fixedly embedded under the elastic diaphragm The middle part of the end face; the guide column is fixedly connected with the coil skeleton of the voice coil actuator, the upper end of the guide column is fixedly connected with the middle part of the insert, and the lower end is axially slidably fitted with the central hole of the permanent magnet. The invention has the advantages of simple structure, high reliability, accurate test results and convenient testing of the dynamic quality of the voice coil actuator.

Description

Dynamic characteristic testing device and system for voice coil actuator

Technical Field

The invention relates to a dynamic characteristic testing device, in particular to a dynamic characteristic testing device and system for a voice coil actuator.

Background

While the automobile is developing towards the direction of intellectualization and electric control, the automobile power assembly suspension is also undergoing technological innovation. At present, more and more automobile manufacturers introduce three-cylinder engines, and the three-cylinder engines have larger vibration due to the running irregularity, so that higher and higher requirements are provided for the power assembly suspension, and the active suspension developed on the basis of the hydraulic suspension becomes more and more research objects of the automobile manufacturers. The voice coil actuator is used as an actuator in the active suspension control link, and the dynamic performance of the voice coil actuator directly influences the vibration isolation performance of the active suspension. The dynamic behavior of a voice coil actuator is represented by the response of its output force to an input alternating current. In order to enable the voice coil actuator to have better response characteristics, the smaller the mass of the rotor is, the better the rotor is, and the rotor can be connected with the elastic diaphragm, so that the equivalent dynamic mass of the voice coil actuator is generally not equal to the mass of the rotor, and the mass of the rotor needs to be accurately known in the mathematical modeling process of the actuator, therefore, it is very important to design a device capable of accurately testing the equivalent dynamic mass of the voice coil actuator.

The traditional voice coil actuator dynamic characteristic testing device can only test the static performance when the voice coil actuator is connected with direct current due to simple structure, and cannot test the dynamic performance of the voice coil actuator under the condition of inputting alternating current to the voice coil actuator so as to calculate the dynamic quality of the actuator; or the structure is too complicated, the number of parts is large, the processing requirement on the parts is high, the equipment cost is high, and the requirements of scientific research of common colleges and universities and the requirements of middle and small enterprises on product performance testing cannot be met.

Disclosure of Invention

The invention aims to provide a device and a system for testing the dynamic characteristics of a voice coil actuator, which have the advantages of simple structure, high reliability and low cost.

The technical scheme adopted by the invention for solving the problems is as follows:

a voice coil actuator dynamic characteristic testing apparatus comprising:

the shell comprises an upper shell, an outer shell and a lower shell which are fixedly connected from top to bottom in sequence, wherein the upper shell and the outer shell are both of hollow structures;

the pulling pressure sensor is fixed on the inner side of the lower shell through a screw;

the sensor support is fixed on the tension and pressure sensor through threads and is fixedly connected with the lower end face of the permanent magnet of the voice coil actuator through a screw;

the elastic diaphragm is fixedly clamped between the upper shell and the outer shell;

the acceleration sensor is fixed in the middle of the upper end face of the elastic diaphragm;

the insert is fixedly embedded in the middle of the lower end face of the elastic diaphragm;

and the guide pillar is fixedly connected with the coil framework of the voice coil actuator, the upper end of the guide pillar is fixedly connected with the middle part of the insert, and the lower end of the guide pillar is in axial sliding fit with the central hole of the permanent magnet of the voice coil actuator.

Furthermore, the upper shell is of a circular ring-shaped structure, an annular upper shell pressing groove is formed in the outer side of the upper shell through hole in the center, two upper shell positioning bosses are arranged on the same surface where the upper shell pressing groove is located, and a plurality of upper shell screw holes are uniformly formed in the upper shell along the circumferential direction.

Furthermore, an annular outer shell pressing groove located outside the outer shell through hole is formed in the upper end face of the outer shell, the first convex rib and the second convex rib of the elastic membrane are respectively embedded into the upper shell pressing groove and the outer shell pressing groove, two outer shell positioning holes and a plurality of outer shell threaded holes are further formed in the upper end face of the outer shell, the outer shell positioning holes are matched with the upper shell positioning bosses to accurately position the upper shell and the outer shell, and screws penetrate through the upper shell screw holes to be matched with the outer shell threaded holes to tightly press the elastic membrane; the cylindrical surface of the outer shell is provided with an outer shell side hole for a connecting wire of the pull pressure sensor to pass through; the shell body bottom has the shell body flange face, evenly seted up a plurality of shell body screw holes on the shell body flange face.

Further, the lower casing be cylindrical structure, casing center is equipped with down the casing screw hole down, the screw passes down the casing screw hole will draw pressure sensor lower extreme to fix on the casing down, the casing flange face down is equipped with to the lower casing outer lane, evenly seted up a plurality of casing screw holes down on the casing flange face down, the shell body cover is established and is linked as an organic wholely through the screw on the casing down.

Further, the sensor support is cylindrical structure, sensor support center is equipped with sensor support screw hole, draw pressure sensor upper end through with sensor support screw hole cooperation fix on the sensor support, evenly be equipped with a plurality of sensor support counter bores on the sensor support, the screw passes the sensor support counter bore with permanent magnet fixed connection.

Furthermore, the elastic diaphragm is of a disc-shaped structure made of rubber, annular first convex ribs and annular second convex ribs are arranged on the edges of the upper end face and the lower end face of the elastic diaphragm respectively, an elastic diaphragm groove is formed in the middle of the lower end face of the elastic diaphragm, and when the insert drives the rubber diaphragm to move along the axis direction of the permanent magnet, the elastic diaphragm has certain rigidity when moving in the direction perpendicular to the surface direction of the elastic diaphragm.

Furthermore, the upper end surface of the insert is embedded into the groove of the elastic diaphragm and is connected together through vulcanization, and the lower end of the insert is connected with the guide post through threads.

Furthermore, a circular guide pillar flange surface is arranged in the middle of the guide pillar, a plurality of guide pillar screw holes are formed in the guide pillar flange surface, screws penetrate through the guide pillar screw holes to fixedly connect the guide pillar with the coil framework, the lower end of the guide pillar is in axial sliding fit with a central hole of the permanent magnet, the guide pillar and the coil framework can only move along the axial direction of the permanent magnet, and the upper end of the guide pillar is in threaded connection with the insert.

Furthermore, the acceleration sensor is adhered to the upper end face of the elastic membrane through glue.

Furthermore, the screw for connecting the sensor support and the permanent magnet is made of a magnetic-insulating stainless steel material, and the guide pillar, the sensor support and the coil framework are made of a magnetic-insulating aluminum alloy material.

A voice coil actuator dynamic characteristic testing system comprising a voice coil actuator dynamic characteristic testing apparatus as described, further comprising:

the data acquisition device is electrically connected with the pull pressure sensor and the acceleration sensor and is used for acquiring data signals of the pull pressure sensor and the acceleration sensor;

and the comparison and analysis device is used for calculating the ratio of the data signals of the tension and pressure sensor and the acceleration sensor and judging the dynamic quality of the voice coil actuator.

Compared with the prior art, the dynamic characteristic testing device for the voice coil actuator is simple in structure, high in reliability, accurate in testing result and convenient for testing the dynamic quality of the voice coil actuator.

Drawings

FIG. 1 is an assembly schematic of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the guide post of the present invention;

FIG. 4 is a schematic structural diagram of the upper housing of the present invention;

FIG. 5 is a cross-sectional view of the elastomeric membrane of the present invention;

FIG. 6 is a schematic structural diagram of the outer casing of the present invention;

FIG. 7 is a schematic view of the construction of the lower housing of the present invention;

fig. 8 is a schematic view of the sensor mount structure of the present invention.

Reference is made to the accompanying drawings in which: 1-acceleration sensor, 2-upper shell, 2a, 2c, 2f, 2 h-upper shell screw hole, 2b, 2 g-upper shell positioning boss, 2 d-upper shell through hole, 2 e-upper shell indent, 3-outer shell, 3a, 3c, 3f, 3 h-outer shell screw hole, 3b, 3 g-outer shell positioning hole, 3 d-outer shell through hole, 3 e-outer shell indent, 3 i-outer shell side hole, 3 k-outer shell flange face, 3j, 3l, 3m, 3 n-outer shell screw hole, 4-lower shell, 4a, 4c, 4d, 4 f-lower shell screw hole, 4 b-lower shell flange face, 4 e-lower shell screw hole, 5-elastic membrane, 5a, 5 b-elastic membrane first, The sensor comprises a second convex rib, a 5 c-elastic diaphragm groove, a 6-insert, a 7-guide post, a 7 a-guide post flange surface, a 7b and 7 c-guide post screw hole, an 8-coil framework, a 9-coil, a 10-permanent magnet, an 11-sensor support, an 11a and 11 c-sensor support countersunk holes, an 11 b-sensor support threaded hole and a 12-pulling pressure sensor.

Detailed Description

The invention is described in detail below with reference to the accompanying examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 8, a voice coil actuator dynamic characteristic testing apparatus includes:

the shell comprises anupper shell 2, anouter shell 3 and alower shell 4 which are fixedly connected from top to bottom in sequence, wherein theupper shell 2 and theouter shell 3 are both hollow structures;

a tension andpressure sensor 12 fixed to the inner side of thelower case 4 by screws;

thesensor support 11 is fixed on the tension andpressure sensor 12 through threads and is fixedly connected with the lower end face of thepermanent magnet 10 of the voice coil actuator through a screw;

theelastic diaphragm 5 is fixedly clamped between theupper shell 2 and theouter shell 3;

the acceleration sensor 1 is fixed in the middle of the upper end face of theelastic diaphragm 5;

theinsert 6 is fixedly embedded in the middle of the lower end face of theelastic diaphragm 5;

and theguide pillar 7 is fixedly connected with acoil framework 8 of the voice coil actuator, the upper end of theguide pillar 7 is fixedly connected with the middle part of theinsert 6, and the lower end of the guide pillar is in axial sliding fit with a central hole of apermanent magnet 10 of the voice coil actuator.

The voice coil actuator is composed of acoil framework 8, acoil 9 and apermanent magnet 10, the upper end of the voice coil actuator is connected with theelastic diaphragm 5 through aguide pillar 7 and aninsert 6, the lower end of the voice coil actuator is connected with atension pressure sensor 12 through asensor support 11, and thetension pressure sensor 12 is locked on thelower shell 4 through a screw.

In this embodiment, as shown in fig. 3, a circular guidepost flange surface 7a is disposed in the middle of theguide post 7, twoscrew holes 7b and 7c are formed in the guidepost flange surface 7a, screws pass through the guidepost screw holes 7b and 7c to fix theguide post 7 and thecoil frame 8 together, the lower end of theguide post 7 is matched with thepermanent magnet 10, so that the guide post 7 and thecoil frame 8 can only move along the axial direction of thepermanent magnet 10 without moving along the radial direction of thepermanent magnet 10, and the upper end of theguide post 7 is connected with theinsert 6 through threads.

In this embodiment, theguide post 7 and thecoil bobbin 8 are made of a magnetic-insulating aluminum alloy material, so as to prevent the magnetic field direction of thepermanent magnet 10 from being disturbed and the performance of the electromagnetic actuator from being affected.

In this embodiment, the upper end of theinsert 6 is inserted into theelastic diaphragm groove 5c and connected together by vulcanization, and the lower end of theinsert 6 is connected to theguide post 7 by a screw.

In this embodiment, as shown in fig. 5, theelastic membrane 5 is a disk-shaped structure, the edges of the upper and lower end surfaces of theelastic membrane 5 are provided with first andsecond ribs 5a and 5b, theelastic membrane 5 is made of rubber, when theinsert 6 drives therubber membrane 5 to move along the axial direction of thepermanent magnet 10, therubber membrane 5 exhibits a certain rigidity, and when the hardness of the rubber material is different, the rigidity exhibited by therubber membrane 5 is also different.

In this specific embodiment, the acceleration sensor 1 is adhered to the upper surface of theelastic diaphragm 5 through glue, and moves along the axial direction of thepermanent magnet 10 under the driving of thecoil framework 8, and the acceleration obtained by the test of the acceleration sensor 1 is the acceleration of the moving mass of the voice coil actuator.

In this embodiment, as shown in fig. 4, theupper housing 2 is a circular ring structure, an upperhousing press groove 2e is formed in an outer ring of the upper housing throughhole 2d, two upperhousing positioning bosses 2b and 2g are arranged on a same plane where the upperhousing press groove 2e is located, and four upperhousing screw holes 2a, 2c, 2f and 2h are uniformly formed in theupper housing 2.

In this embodiment, as shown in fig. 6, an outercasing pressure groove 3e is formed in an outer ring of the outer casing throughhole 3d, the first andsecond ribs 5a and 5b of the elastic diaphragm are respectively embedded into the uppercasing pressure groove 2e and the outercasing pressure groove 3e, twopositioning holes 3b and 3g are formed in an upper end surface of theouter casing 3, the outercasing positioning holes 3b and 3g are matched with the uppercasing positioning bosses 2b and 2g to accurately position theupper casing 2 and theouter casing 3, four outer casing threadedholes 3a, 3c, 3f and 3h are uniformly formed in an upper surface of theouter casing 3, and screws penetrate through the upper casing threadedholes 2a, 2c, 2f and 2h to be matched with the outer casing threadedholes 3a, 3c, 3f and 3h to tightly press theelastic diaphragm 5. An outer shell side hole 3i is formed in the cylindrical surface of theouter shell 3 and used for allowing a connecting line of thepressure sensor 12 to pass through, aflange surface 3k is arranged at the bottom end of theouter shell 3, and four outershell screw holes 3j, 3l, 3m and 3n are uniformly formed in theflange surface 3k of the outer shell.

In this embodiment, as shown in fig. 7, thelower case 4 is a cylindrical structure, a lowercase screw hole 4e is provided at the center of thelower case 4, a screw passes through the lowercase screw hole 4e to fix the tension andpressure sensor 12 on thelower case 4, a lowercase flange face 4b is provided on the outer ring of thelower case 4, four lowercase screw holes 4a, 4c, 4d, 4f are uniformly provided on the lowercase flange face 4b, theouter case 3 is sleeved on thelower case 4, and the screw is matched with the lowercase screw holes 4a, 4c, 4d, 4f through the outercase screw holes 3j, 3l, 3m, 3n to lock thelower case 4 and theouter case 3.

In this embodiment, as shown in fig. 8, thesensor support 11 is a cylindrical structure, thesensor support 11 is provided with the sensor support threadedhole 11b at the center, the tension andpressure sensor 12 is fixed on thesensor support 11 by matching with the sensor support threadedhole 11b, thesensor support 11 is uniformly provided with two sensor support countersunkholes 11a and 11c, and screws pass through the sensor support countersunkholes 11a and 11c to fix thesensor support 11 and thepermanent magnet 10.

In this embodiment, thesensor support 11 is made of a magnetic-insulating aluminum alloy, and the screws for fixing thesensor support 11 and thepermanent magnet 10 are made of a magnetic-insulating stainless steel.

In this embodiment, when the current is applied to thecoil 9, thecoil 9 will generate corresponding motion under the magnetic field of thepermanent magnet 10, and when the applied current is harmonic current, thecoil 9 will drive thebobbin 8 to do harmonic motion.

Another embodiment of the present invention provides a system for testing the dynamic characteristics of a voice coil actuator, including the device for testing the dynamic characteristics of a voice coil actuator, further including:

the data acquisition device is electrically connected with the pull pressure sensor and the acceleration sensor and is used for acquiring data signals of the pull pressure sensor and the acceleration sensor;

and the comparison and analysis device is used for calculating the ratio of the data signals of the tension and pressure sensor and the acceleration sensor and judging the dynamic quality of the voice coil actuator.

When the coil is connected with simple harmonic current and then moves along the axial direction of the permanent magnet, the pullingpressure sensor 12 is used for collecting a dynamic force signal output by the voice coil actuator, the acceleration sensor 1 is used for collecting a motion acceleration signal of the moving mass of the voice coil actuator, and according to Newton's second law, the ratio of the dynamic force signal output by the voice coil actuator to the motion acceleration signal of the moving mass of the voice coil actuator is the moving mass of the voice coil actuator.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

Translated fromChinese

1.一种音圈作动器动特性测试装置，其特征在于，包括：1. a voice coil actuator dynamic characteristic testing device, is characterized in that, comprises:壳体，包括由上至下依次固定连接的上壳体、外壳体和下壳体，所述上壳体、外壳体均为空心结构；a casing, including an upper casing, an outer casing and a lower casing that are fixedly connected in sequence from top to bottom, and the upper casing and the outer casing are both hollow structures;拉压力传感器，通过螺钉固定在所述下壳体内侧；Pull the pressure sensor and fix it on the inner side of the lower casing by screws;传感器支座，通过螺纹固定在所述拉压力传感器上，并通过螺钉与音圈作动器的永磁体下端面固定连接；The sensor support is fixed on the tension and pressure sensor through threads, and is fixedly connected with the lower end face of the permanent magnet of the voice coil actuator through screws;弹性膜片，夹固设置在所述上壳体、外壳体之间；an elastic diaphragm, which is clamped and arranged between the upper casing and the outer casing;加速度传感器，固定在所述弹性膜片上端面中部；an acceleration sensor, fixed in the middle of the upper end face of the elastic diaphragm;嵌件，固定地嵌入设置在所述弹性膜片下端面中部；an insert, which is fixedly embedded in the middle of the lower end face of the elastic diaphragm;导柱，与所述音圈作动器的线圈骨架固定连接，所述导柱的上端与嵌件中部固定连接，下端与所述音圈作动器的永磁体的中心孔轴向滑动配合；a guide post, which is fixedly connected with the coil skeleton of the voice coil actuator, the upper end of the guide post is fixedly connected with the middle part of the insert, and the lower end is axially slidably fitted with the central hole of the permanent magnet of the voice coil actuator;其中，所述弹性膜片为橡胶材质的圆片状结构，所述弹性膜片上、下端面的边缘分别设置环形的第一、第二凸筋，所述弹性膜片下端面中部设置有弹性膜片凹槽，当嵌件带动弹性膜片沿永磁体轴线方向运动时，在垂直于所述的弹性膜片表面方向运动时具有一定的刚度；Wherein, the elastic diaphragm is a disc-shaped structure made of rubber material, the edges of the upper and lower end surfaces of the elastic diaphragm are respectively provided with annular first and second convex ribs, and the middle of the lower end surface of the elastic diaphragm is provided with elastic The diaphragm groove, when the insert drives the elastic diaphragm to move along the axis of the permanent magnet, has a certain rigidity when it moves in a direction perpendicular to the surface of the elastic diaphragm;所述的嵌件上端面嵌入到所述的弹性膜片凹槽中，并通过硫化连接在一起，所述的嵌件下端通过螺纹与所述的导柱相连；The upper end face of the insert is embedded in the groove of the elastic diaphragm and connected together by vulcanization, and the lower end of the insert is connected with the guide post through threads;所述导柱的中部设置有圆形的导柱法兰面，所述导柱法兰面上开设有若干导柱螺钉孔，螺钉穿过所述导柱螺钉孔将导柱与线圈骨架固定连接，所述导柱的下端与所述永磁体的中心孔轴向滑动配合，使导柱和线圈骨架仅能沿永磁体轴线方向运动，所述导柱上端与嵌件通过螺纹连接。The middle of the guide post is provided with a circular guide post flange surface, and a number of guide post screw holes are opened on the guide post flange surface, and the screws pass through the guide post screw holes to fixedly connect the guide post and the coil bobbin. The lower end of the guide post is axially slidably matched with the central hole of the permanent magnet, so that the guide post and the coil bobbin can only move along the axis of the permanent magnet, and the upper end of the guide post and the insert are connected by threads.2.根据权利要求1所述的音圈作动器动特性测试装置，其特征在于，所述的上壳体为圆环状结构，位于中心的上壳体通孔的外侧开设有环形的上壳体压槽，与所述上壳体压槽所在的同一面上设有两个上壳体定位凸台，所述上壳体上沿周向均匀开设有若干上壳体螺钉孔。2 . The dynamic characteristic testing device of a voice coil actuator according to claim 1 , wherein the upper casing is an annular structure, and an annular upper casing is provided outside the through hole of the central upper casing. 3 . The casing pressure groove is provided with two upper casing positioning bosses on the same surface as the upper casing pressure groove, and a plurality of upper casing screw holes are uniformly opened on the upper casing along the circumferential direction.3.根据权利要求2所述的音圈作动器动特性测试装置，其特征在于，所述外壳体上端面开设有位于外壳体通孔外侧的环形外壳体压槽，弹性膜片第一、第二凸筋分别嵌入到上壳体压槽和外壳体压槽中，所述外壳体上端面还开设有两个外壳体定位孔和若干外壳体螺纹孔，所述外壳体定位孔与所述上壳体定位凸台配合将上壳体与外壳体准确定位，螺钉穿过上壳体螺钉孔与外壳体螺纹孔配合将弹性膜片压紧；所述外壳体圆柱面上设有用于拉压力传感器连接线通过的外壳体侧孔；所述外壳体底端有外壳体法兰面，所述外壳体法兰面上均匀开设有若干外壳体螺钉孔。3 . The dynamic characteristic testing device of a voice coil actuator according to claim 2 , wherein the upper end face of the outer casing is provided with an annular outer casing pressure groove located outside the through hole of the outer casing, and the elastic diaphragm is first, The second rib is respectively embedded in the pressure groove of the upper casing and the pressure groove of the outer casing. The upper end surface of the outer casing is also provided with two outer casing positioning holes and a number of outer casing threaded holes. The outer casing positioning holes are connected to the outer casing. The positioning boss of the upper casing cooperates with the upper casing and the outer casing to accurately position the upper casing. The screw passes through the screw hole of the upper casing and cooperates with the threaded hole of the outer casing to compress the elastic diaphragm; A side hole of the outer casing through which the sensor connecting wire passes; the bottom end of the outer casing has an outer casing flange surface, and a plurality of outer casing screw holes are evenly opened on the outer casing flange surface.4.根据权利要求1所述的音圈作动器动特性测试装置，其特征在于，所述的下壳体为圆柱形结构，所述下壳体中心设有下壳体螺钉孔，螺钉穿过所述下壳体螺钉孔将所述拉压力传感器下端固定在下壳体上，所述下壳体外圈设有下壳体法兰面，所述下壳体法兰面上均匀开设有若干下壳体螺纹孔，所述外壳体套设在下壳体上通过下壳体螺纹孔连为一体。4 . The dynamic characteristic testing device of a voice coil actuator according to claim 1 , wherein the lower casing is a cylindrical structure, and the center of the lower casing is provided with a lower casing screw hole, and the screw passes through the lower casing. 5 . The lower end of the tension pressure sensor is fixed on the lower casing through the screw holes of the lower casing. The casing has a threaded hole, and the outer casing is sleeved on the lower casing and connected together through the threaded hole of the lower casing.5.根据权利要求1所述的音圈作动器动特性测试装置，其特征在于，所述传感器支座为圆柱形结构，所述传感器支座中心设有传感器支座螺纹孔，所述拉压力传感器上端通过与传感器支座螺纹孔配合固定在传感器支座上，所述传感器支座上均匀设有若干传感器支座沉头孔，螺钉穿过所述传感器支座沉头孔将传感器支座与所述永磁体固定连接。5 . The dynamic characteristic testing device of a voice coil actuator according to claim 1 , wherein the sensor support is a cylindrical structure, and the center of the sensor support is provided with a sensor support screw hole, and the pull The upper end of the pressure sensor is fixed on the sensor support by cooperating with the threaded hole of the sensor support. The sensor support is evenly provided with a plurality of countersunk holes of the sensor support, and the screw passes through the countersunk hole of the sensor support to connect the sensor support. fixedly connected to the permanent magnet.6.根据权利要求1所述的音圈作动器动特性测试装置，其特征在于，连接所述传感器支座和永磁体的螺钉为绝磁的不锈钢材质，所述导柱、传感器支座和线圈骨架均为绝磁的铝合金材质。6 . The dynamic characteristic testing device of a voice coil actuator according to claim 1 , wherein the screw connecting the sensor support and the permanent magnet is made of magnetically insulating stainless steel, and the guide post, the sensor support and the The coil frame is made of non-magnetic aluminum alloy.7.一种音圈作动器动特性测试系统，其特征在于，包括如权利要求1至6中任一项所述的音圈作动器动特性测试装置，还包括：7. A voice coil actuator dynamic characteristic test system, characterized in that, comprising the voice coil actuator dynamic characteristic test device as described in any one of claims 1 to 6, further comprising:数据采集装置，与所述的拉压力传感器和所述加速度传感器电气连接，用于采集所述拉压力传感器和所述加速度传感器的数据信号；a data acquisition device, electrically connected with the tensile force sensor and the acceleration sensor, for collecting data signals of the tensile force sensor and the acceleration sensor;比较分析装置，用于计算所述拉压力传感器和所述加速度传感器的数据信号的比值并判断音圈作动器的动质量。A comparative analysis device is used for calculating the ratio of the data signals of the tension force sensor and the acceleration sensor and judging the dynamic mass of the voice coil actuator.

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