VCM (Voice Coil Motor) motor performance test system and test method

Abstract

The invention discloses a VCM (Voice Coil Motor) motor performance test system and test method. The test system comprises a VCM motor test fixture, a VCM driving module, a special test PC (Personal Computer), a laser controller, a laser position tester and a power supply module, wherein the VCM driving module can drive and control the current of a VCM motor to be tested and can be communicated with the special test PC; the special test PC has a visual interface and can be communicated with the VCM driving module; the laser position tester can detect the displacement data of the VCM motor to be tested under different driving currents and transmit the displacement data to the laser controller, and the laser controller can process the displacement data and transmit to the special test PC; and the power supply module can provide a power supply for the laser controller and the VCM motor to be tested. The test system can simply, conveniently and accurately test and evaluate the starting current and the linear fall-back characteristic of the VCM motor and further evaluate whether the VCM motor conforms to the requirement.

Description

technical field [0001] The invention relates to a test system and a test method, in particular to a VCM motor performance test system and a test method. Background technique [0002] VCM motor is the abbreviation of the first English letter of Vioce Coil Motor, commonly known as voice coil motor or voice coil motor. VCM motor is widely used in mobile phone zoom and hard disk due to its small footprint, high reliability and high power support. In the magnetic arm drive, the VCM motor is an important part of the camera module. It not only determines the autofocus (AF) capability of the camera module, but also a key component for judging the excellent performance of a camera module. However, in the camera module In the process of mass production, a large number of VCM malfunctions often occur, causing the camera module to fail to autofocus normally, and tests such as resolution, near focus, and far focus are all affected. The main reason is the individual characteristics of the...

AI Technical Summary

Problems solved by technology

[0002] VCM motor is the abbreviation of the first English letter of Vioce Coil Motor, commonly known as voice coil motor or voice coil motor. VCM motor is widely used in mobile phone zoom and hard disk due to its small footprint, high reliability and high power support. In the magnetic arm drive, the VCM motor is an important part of the camera module. It not only determines the autofocus (AF) capability of the camera module, but also a key component for judging the excellent performance of a camera module. However, in the camera module In the process of mass production, a large number of VCM malfunctions often occur, causing the camera module to fail to autofocus normally, and tests such as resolution, near focus, and far focus are all affected. The main reason is the individual characteristics of the VCM motor Defective, therefore, it is necessary to test the performance of the VCM motor in advance to eliminate the bad VCM single product into the mass production process and ensure the product quality of the camera module. However, there is currently no test device dedicated to the performance test of the VCM motor And effective testing methods, simple, convenient and accurate detection of VCM performance

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