Fuzzy control strategy is suitable for voice coil motors, fuzzy control in the field of traditional motor control a wide range of applications, today Tongmao motor will tell you what it suitable for voice coil motor and the advantages and disadvantages of what?

First of all, take a look at the advantages of fuzzy control:
(1) The response time to the position feedback signal is short
(2) For the external parameters of the change will not produce a violent response, which belongs to a very robust control system,
From the point (1) (2) above, it can be seen that it closely matches the requirements of closed-loop control system of voice coil motor on dynamic performance, repeatability, system stability and so on, but the traditional fuzzy control theory relative to the classic PID control theory, there are some shortcomings in the control of positioning accuracy, so the traditional fuzzy control and classic PID control need to be combined, the main purpose is to improve the dynamic performance of the control system and system of repeat positioning Accuracy, inhibition of overshoot phenomenon.

2. The principle of fuzzy control: It controls the position loop of the voice coil motor in a segmented manner in order to effectively reduce the lag of the control parameters caused by the error variation. The control method of each segment is based on the segment If the error exceeds the limit within the segment, the fuzzy control strategy can be used to adjust the speed of the motor quickly to reduce the error. At this time, the adjustment time can be shortened effectively and the system can be guaranteed not to overshoot. When the error is less than the limit within the segment, the control system automatically switches to the classic control strategy.
So in the voice coil motor through fuzzy control and PID control a combination of control, both to improve positioning accuracy, but also inhibit overshoot phenomenon is a very good control method.
This article originates from Kunshan Tongmao Electronics Co., Ltd. (www.tmmotion.com) original company, please indicate the source.