Self-detection method for voice coil motor parameters
A voice coil motor, self-testing technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low tolerance of motor parameter changes, long motor stabilization time, short stabilization time, etc., to avoid the weakening of the stabilization effect Effect
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[0038] In order to make the present invention more obvious and understandable, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0039] like figure 1 As shown, in the present invention, the control chip is connected to the voice coil motor through the control interface, and the control chip drives the motor to different positions by controlling the current inside the voice coil motor. Through the control chip to input a step-change current to the motor, the displacement of the motor can be obtained, such as image 3 shown. in, image 3 The upper figure in the figure is the curve of current change with time (the abscissa is time, the ordinate is current), and the lower figure is the curve of motor displacement with time (the abscissa is time, and the ordinate is motor displacement). Depend on image 3 It can be seen that the change of motor displacement is a periodic damping oscillation.
[0040]...
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