Control method of voice coil motor with short stable time and wide application damping coefficient range
A technology of voice coil motor and control method, which is applied in the direction of control system, AC motor control, electrical components, etc., can solve the problems of increased damping coefficient of voice coil motor, complex control algorithm, and weakened stabilization effect of general control algorithm, etc., and achieves simplification circuit, saving storage resources, and reducing computational complexity
Active Publication Date: 2019-07-16
GIANTEC SEMICON LTD
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[0043] The invention provides a voice coil motor control method with short stabilization time and wide range of damping coefficients. figure 1 is the waveform of the voice coil motor control algorithm used in the present invention. figure 1 The middle abscissa represents time, and the ordinate represents the displacement that controls the movement of the voice coil motor.
[0044] from figure 1 It can be seen from the figure that the algorithm controls the motor to reach the target position in three steps, in which the first step is at the time of 0, the moving distance of the motor is step1, and the moving direction is consistent with the target direction; the moving time of the second step is T is the motor oscillation period, the motor moving distance is step2, and the moving direction is opposite to the target direction; the third step moving time is The moving distance of the motor is step3, and the moving direction is the same as the target direction. After the thre...
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The invention relates to a control method of a voice coil motor with short stable time and a wide application damping coefficient range. The voice coil motor reaches a target position by three steps,in a first step, the moving direction of the motor is same as a target direction; in a second step, the moving direction of the motor is opposite to the target direction; in a third step, the moving direction of the motor is same as the target direction; and after the three steps, the position where the motor is located is the target position. A corresponding coefficient is multiplexed by the target moving distance to obtain moving distance of each step, a multiplying algorithm of the target moving distance and the damping coefficient corresponding parameter is optimally selected by a multiplying unit, and calculation of a remaining part in the corresponding coefficient of each step is achieved in parallel by displacement and multiplication or is achieved by displacement. The method is simple to implement, the motor can be rapidly stabilized, the method is applicable to voice coil motors with different damping coefficients and has the advantages that the circuit is simplified, the calculation complexity is reduced and the storage resource is saved.
Description
technical field [0001] The invention discloses a control method capable of rapidly stabilizing a motor, and the method has the characteristic of being applicable to motors with different damping coefficients. The invention belongs to the fields of voice coil motor control and integrated circuit design. Background technique [0002] The time for the control motor to stabilize is an important parameter to measure the control algorithm of the voice coil motor. [0003] With the continuous optimization of motor cost and performance, the selection of new materials makes the damping coefficient of voice coil motors on the market continue to increase. The increase of the damping coefficient of the voice coil motor leads to the gradual weakening of the stabilization effect of the general control algorithm. In order to accommodate voice coil motors with increasing damping coefficients, the control algorithm needs to be more and more complex. One of the prominent manifestations of ...
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IPC IPC(8): H02P25/034
CPCH02P25/034
Inventor 陈珍珍张洪杨清
Owner GIANTEC SEMICON LTD