CN115356630B - Automatic dynamic performance testing system for voice coil motor - Google Patents
Automatic dynamic performance testing system for voice coil motor Download PDFInfo
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- CN115356630B CN115356630B CN202211290098.XA CN202211290098A CN115356630B CN 115356630 B CN115356630 B CN 115356630B CN 202211290098 A CN202211290098 A CN 202211290098A CN 115356630 B CN115356630 B CN 115356630B
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 67
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 238000011056 performance test Methods 0.000 claims abstract description 5
- 230000010363 phase shift Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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Abstract
The invention relates to the technical field of photoelectric scanning and tracking, in particular to a dynamic performance automatic test system of a voice coil motor, which comprises: the device comprises a base, a motor driving assembly, a sensor assembly and a control assembly; the motor driving assembly and the sensor assembly are respectively arranged on the base; the motor driving component is respectively electrically connected with the voice coil motor to be tested and the control component, receives a control signal of the control component and drives the voice coil motor to be tested to operate according to the control signal; the sensor assembly is electrically connected with the control assembly, and is used for acquiring a displacement detection signal of the output end of the voice coil motor to be tested and sending the displacement detection signal to the control assembly; and the control assembly receives the displacement detection signal and compares the displacement detection signal with the control signal to obtain the dynamic performance test data of the voice coil motor to be tested. The voice coil motor is driven by the motor driving assembly to reciprocate along a straight line with different waveforms and frequencies, displacement detection signals and control signals are compared, the dynamic performance of the voice coil motor is obtained, and the voice coil motor testing device is reasonable in structure and high in testing precision.
Description
Technical Field
The invention relates to the technical field of photoelectric scanning and tracking, in particular to an automatic testing system for dynamic performance of a voice coil motor.
Background
The voice coil motor is a special type direct current driving motor, has excellent performances such as high speed, high acceleration and quick response, and is often used as a precise current driving element in the fields of precise pointing, laser communication, image motion compensation and the like. In the field of aerospace, in order to realize accurate dynamic tracking, higher requirements are provided for dynamic performances such as amplitude-frequency characteristics, phase-frequency characteristics and the like of a voice coil motor.
The existing testing device is difficult to automatically test the dynamic performance of the high-power voice coil motor, and the testing requirements of the voice coil motor in the production and use processes cannot be met.
Disclosure of Invention
The embodiment of the invention aims to provide an automatic testing system for the dynamic performance of a voice coil motor, which is characterized in that a motor driving component is used for driving the voice coil motor to reciprocate along a straight line with different waveforms and frequencies, a displacement detection signal is compared with a control signal, and the dynamic performance of the voice coil motor is obtained.
In order to solve the above technical problem, an embodiment of the present invention provides an automatic testing system for dynamic performance of a voice coil motor, including: the device comprises a base, a motor driving assembly, a sensor assembly and a control assembly;
the motor driving assembly and the sensor assembly are respectively arranged on the base;
the motor driving assembly is respectively electrically connected with the voice coil motor to be tested and the control assembly, receives a control signal of the control assembly and drives the voice coil motor to be tested to operate according to the control signal;
the sensor assembly is electrically connected with the control assembly, and is used for acquiring a displacement detection signal of the output end of the voice coil motor to be tested and sending the displacement detection signal to the control assembly;
and the control assembly receives the displacement detection signal and compares the displacement detection signal with the control signal to obtain the dynamic performance test data of the voice coil motor to be tested.
Further, the automatic dynamic performance testing system for the voice coil motor further comprises: a displacement detection lever;
one end of the displacement detection rod is fixedly connected with the output end of the voice coil motor to be tested, and the other end of the displacement detection rod faces the sensor assembly and is spaced by a first preset distance.
Further, the sensor assembly includes: the non-contact displacement sensor and the sensor base are fixedly connected;
the sensor base is fixedly connected with the base;
the non-contact displacement sensor is arranged on an extension line of the output end of the voice coil motor to be tested and is spaced by a second preset distance;
and the non-contact displacement sensor acquires a displacement detection signal of the output end of the voice coil motor to be tested and sends the displacement detection signal to the control assembly.
Further, the sensor assembly further comprises: a sensor connecting rod;
one end of the sensor connecting rod is fixedly connected with the sensor base, and the other end of the sensor connecting rod is fixedly connected with the non-contact displacement sensor.
Further, the measuring center distance and the detection range of the non-contact displacement sensor are 50 +/-10 mm, and the resolution is 1.5 mu m.
Further, the automatic dynamic performance testing system for the voice coil motor further comprises: the sliding component is electrically connected with the control component;
the sliding assembly is fixedly arranged on the base and can drive the voice coil motor to be tested to move along a straight line in a reciprocating mode through the voice coil motor base and the voice coil motor to be tested.
Further, the sliding assembly is a high-precision electric sliding table;
the high-precision electric sliding table is electrically connected with the control assembly, and the control assembly drives the voice coil motor to be tested to move in a reciprocating manner along a straight line.
Further, the control component outputs current signals with different waveforms and different frequencies to the voice coil motor to be tested through the motor driving component, and phase shift values of the current signals and the waveforms of the displacement detection signals are compared to calculate amplitude-frequency characteristics, phase-frequency characteristics and motion speed of the voice coil motor to be tested.
Further, the current signal waveform may be a sine wave or a square wave.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
through motor drive assembly drive voice coil motor with different wave forms, frequency along straight reciprocating motion, contrast displacement detection signal and control signal, acquire voice coil motor's dynamic behavior, have rational in infrastructure, measuring accuracy is high, a great deal of advantage such as installation and debugging convenience.
Drawings
Fig. 1 is a schematic front structural diagram of an automatic dynamic performance testing system for a voice coil motor according to an embodiment of the present invention;
fig. 2 is a schematic top view of a system for automatically testing dynamic performance of a voice coil motor according to an embodiment of the present invention.
Reference numerals:
1. voice coil motor, 2, base, 3, slip subassembly, 4, displacement detection pole, 5, non-contact displacement sensor, 6, sensor connecting rod, 7, motor drive assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings in combination with the embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1 and fig. 2, an embodiment of the invention provides an automatic testing system for dynamic performance of a voice coil motor, including: the device comprises a base 2, a motor driving component 7, a sensor component and a control component; the motor driving component 7 and the sensor component are respectively arranged on the base 2; the motor driving component 7 is respectively electrically connected with the voice coil motor 1 to be tested and the control component, receives a control signal of the control component and drives the voice coil motor 1 to be tested to operate according to the control signal; the sensor assembly is electrically connected with the control assembly, and is used for acquiring a displacement detection signal of the output end of the voice coil motor 1 to be tested and sending the displacement detection signal to the control assembly; and the control assembly receives the displacement detection signal and compares the displacement detection signal with the control signal to obtain the dynamic performance test data of the voice coil motor 1 to be tested.
Specifically, the voice coil motor 1 to be tested in the above embodiment is the packaged high-power voice coil motor 1. Alternatively, the voice coil motor 1 has a resistance of 15 Ω, and when a current value of 3A is applied, the power may reach 135W.
The motor driving component 7 is used for driving the voice coil motor 1 to output different waveforms, frequencies and current values, phase shift values of the two waveforms are calculated through the current waveforms and displacement detection signal waveforms measured by the sensor component, amplitude-frequency characteristics, phase-frequency characteristics, movement speed and the like of the voice coil motor 1 are calculated, and automatic testing of dynamic performance of the voice coil motor 1 is achieved. The motor driving component 7 can accurately drive the voice coil motor 1 to reciprocate according to different waveforms and frequencies, and can automatically output according to set waveforms, such as sine waves, square waves and the like.
Specifically, the control component outputs current signals with different waveforms and different frequencies to the voice coil motor 1 to be tested through the motor driving component 7, and phase shift values of the current signals and the waveform of the displacement detection signal are calculated by comparing the waveform of the current signals with the waveform of the displacement detection signal, and the amplitude-frequency characteristic, the phase-frequency characteristic and the movement speed of the voice coil motor 1 to be tested.
Above-mentioned voice coil motor dynamic behavior automatic test system passes through motor drive assembly 7 drive voice coil motor 1 with different wave forms, frequency along straight reciprocating motion, compares displacement detection signal and control signal, acquires voice coil motor 1's dynamic behavior, has rational in infrastructure, measuring accuracy is high, a great deal of advantages such as installation and debugging convenience.
Optionally, the system for automatically testing dynamic performance of the voice coil motor further comprises: a displacement detection rod 4; one end of the displacement detection rod 4 is fixedly connected with the output end of the voice coil motor 1 to be tested, and the other end of the displacement detection rod faces the sensor assembly and is spaced by a first preset distance.
Specifically, the sensor assembly includes: the non-contact displacement sensor 5 and the sensor base are fixedly connected; the sensor base is fixedly connected with the base 2; the non-contact displacement sensor 5 is arranged on an extension line of the output end of the voice coil motor 1 to be tested and is spaced by a second preset distance; the non-contact displacement sensor 5 acquires a displacement detection signal of the output end of the voice coil motor 1 to be tested and sends the displacement detection signal to the control assembly.
The non-contact displacement sensor 5 can accurately measure the displacement transformation of the displacement detection rod 4 connected with the voice coil motor 1.
Further, the sensor assembly further comprises: a sensor connecting rod 6; one end of the sensor connecting rod 6 is fixedly connected with the sensor base, and the other end of the sensor connecting rod is fixedly connected with the non-contact displacement sensor 5.
Further, the distance of the measurement center and the detection range of the noncontact displacement sensor 5 are 50 ± 10mm, and the resolution thereof is 1.5 μm.
Specifically, voice coil motor dynamic behavior automatic test system still includes: the sliding component 3 is electrically connected with the control component; the sliding assembly 3 is fixedly arranged on the base 2, and can drive the voice coil motor 1 to be tested to move linearly and reciprocally through the base of the voice coil motor 1 and the voice coil motor 1 to be tested.
Further, the sliding assembly 3 is a high-precision electric sliding table; the high-precision electric sliding table is electrically connected with the control assembly, and the voice coil motor 1 to be tested is driven to reciprocate along a straight line under the control of the control assembly.
Optionally, the axial load capacity of the sliding assembly 3 can reach 210N, and the repeated positioning precision is 2 μm.
Above-mentioned electronic slip table of high accuracy can be reciprocating motion on the horizontal direction, through accurate, steady motion, can make the voice coil motor 1 that awaits measuring to approach displacement sensor through displacement detection pole 4.
Alternatively, the current signal waveform may be a sine wave or a square wave.
The embodiment of the invention aims to protect an automatic dynamic performance testing system of a voice coil motor, which comprises: the device comprises a base, a motor driving assembly, a sensor assembly and a control assembly; the motor driving assembly and the sensor assembly are respectively arranged on the base; the motor driving assembly is respectively electrically connected with the voice coil motor to be tested and the control assembly, receives a control signal of the control assembly and drives the voice coil motor to be tested to operate according to the control signal; the sensor assembly is electrically connected with the control assembly, and is used for acquiring a displacement detection signal of the output end of the voice coil motor to be tested and sending the displacement detection signal to the control assembly; and the control assembly receives the displacement detection signal and compares the displacement detection signal with the control signal to obtain the dynamic performance test data of the voice coil motor to be tested. The technical scheme has the following effects:
the voice coil motor is driven by the motor driving assembly to reciprocate along a straight line with different waveforms and frequencies, displacement detection signals and control signals are compared, the dynamic performance of the voice coil motor is obtained, and the voice coil motor has the advantages of being reasonable in structure, high in testing precision, convenient to install and debug and the like.
It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. The utility model provides a voice coil motor dynamic behavior automatic test system which characterized in that includes: the device comprises a base (2), a motor driving assembly (7), a sensor assembly and a control assembly;
the motor driving component (7) and the sensor component are respectively arranged on the base (2);
the motor driving assembly (7) is respectively electrically connected with the voice coil motor (1) to be tested and the control assembly, receives a control signal of the control assembly and drives the voice coil motor (1) to be tested to operate according to the control signal;
the sensor assembly is electrically connected with the control assembly, and is used for acquiring a displacement detection signal of the output end of the voice coil motor (1) to be tested and sending the displacement detection signal to the control assembly;
the control assembly receives the displacement detection signal and compares the displacement detection signal with the control signal to obtain dynamic performance test data of the voice coil motor (1) to be tested;
the sensor assembly includes: the non-contact displacement sensor (5) and the sensor base are fixedly connected;
the sensor base is fixedly connected with the base (2);
the non-contact displacement sensor (5) is arranged on an extension line of the output end of the voice coil motor (1) to be tested and is spaced by a second preset distance;
the non-contact displacement sensor (5) acquires a displacement detection signal of the output end of the voice coil motor (1) to be tested and sends the displacement detection signal to the control assembly;
the control assembly outputs current signals with different waveforms and different frequencies to the voice coil motor (1) to be tested through the motor driving assembly (7), and phase shift values of the current signals and the waveform of the displacement detection signal are compared to calculate amplitude-frequency characteristics, phase-frequency characteristics and motion speed of the voice coil motor (1) to be tested.
2. The system for automatically testing the dynamic performance of a voice coil motor according to claim 1, further comprising: a displacement detection lever (4);
one end of the displacement detection rod (4) is fixedly connected with the output end of the voice coil motor (1) to be tested, and the other end of the displacement detection rod faces the sensor assembly and is spaced by a first preset distance.
3. The system for automatically testing the dynamic performance of a voice coil motor according to claim 1,
the sensor assembly further includes: a sensor connecting rod (6);
one end of the sensor connecting rod (6) is fixedly connected with the sensor base, and the other end of the sensor connecting rod is fixedly connected with the non-contact displacement sensor (5).
4. The automatic voice coil motor dynamic performance testing system of claim 1,
the distance of the measuring center and the detection range of the non-contact displacement sensor (5) are 50 +/-10 mm, and the resolution is 1.5 mu m.
5. The system for automatically testing the dynamic performance of a voice coil motor according to claim 1, further comprising: a sliding component (3) electrically connected with the control component;
the sliding assembly (3) is fixedly arranged on the base (2), and is fixedly connected with the voice coil motor (1) to be tested through a voice coil motor base, so that the voice coil motor (1) to be tested can be driven to move linearly in a reciprocating manner.
6. The automatic voice coil motor dynamic performance testing system of claim 5,
the sliding assembly (3) is a high-precision electric sliding table;
the high-precision electric sliding table is electrically connected with the control assembly, and the voice coil motor (1) to be tested is driven to reciprocate along a straight line under the control of the control assembly.
7. The automatic voice coil motor dynamic performance testing system of claim 1,
the current signal waveform may be a sine wave or a square wave.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211290098.XA CN115356630B (en) | 2022-10-21 | 2022-10-21 | Automatic dynamic performance testing system for voice coil motor |
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| CN202211290098.XA CN115356630B (en) | 2022-10-21 | 2022-10-21 | Automatic dynamic performance testing system for voice coil motor |
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| CN115356630B true CN115356630B (en) | 2023-01-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200709536A (en) * | 2006-03-02 | 2007-03-01 | Magtronics Technology Inc | A voice coil motor and method of using magnetic restoring force achieving displacement control |
| CN106533318A (en) * | 2016-10-31 | 2017-03-22 | 深圳市太赫兹系统设备有限公司 | Voice coil motor control method and system and controller |
| CN108469269B (en) * | 2018-01-19 | 2021-08-20 | 天津大学 | Resonance point testing system of broadband inertial reference stable platform |
| CN108405363B (en) * | 2018-02-06 | 2023-09-05 | 江西森阳科技股份有限公司 | Voice coil motor detection equipment and detection method |
| CN109167550B (en) * | 2018-09-17 | 2021-08-10 | 济南益华摩擦学测试技术有限公司 | Nonlinear voice coil motor motion control method based on frequency domain index |
| CN115097594B (en) * | 2022-08-26 | 2023-01-31 | 北京瑞控信科技股份有限公司 | Large-caliber large-corner high-bandwidth voice coil motor fast-reflection mirror device |
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Address after: Building 1, 3rd Floor, Hefei Luyang Big Data Industrial Park, No. 868 Qinghe Road, Luyang District, Hefei City, Anhui Province, 230041 Patentee after: Anhui Ruikongxin Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 100085 1006, 1st floor, lin831-nei1, Changping Road, Anning North Road, Haidian District, Beijing Patentee before: Beijing ruikongxin Technology Co.,Ltd. Country or region before: China |
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