基于二型模糊变积分PID控制的BLDCM控制研究

Research on BLDCM Control Based on Type-2 Fuzzy Variable Integration PID Control

无刷直流电机(brushless direct current motor,BLDCM)是一种非线性的系统,传统比例积分(proportional-integral,PI)控制存在响应速度慢、动态性能差等问题。针对无刷直流电机运行过程的精准控制存在系统不确定性问题,通过将时变论域、变积分逻辑、区间二型模糊集合综合判断与模糊比例积分微分(proportional-integral-derivative,PID)控制规则相结合,提出了一种新型的二型模糊变积分PID控制器,解决了传统PI控制与一型模糊控制的转速跟踪不足、容易偏离目标转速等问题。仿真结果表明,将二型模糊变积分PID控制算法应用在双闭环调速系统中,获得了更快的转速响应速度、更强的鲁棒性以及更小的超调量,所提方法为无刷直流电机系统提供了新的控制思路。

Brushless direct current motor(BLDCM)is a kind of non-linear system.The traditional proportional-integral(PI)control has problems such as slow response speed and poor dynamic performance.Aiming at the problem of system uncertainty in the precise control of BLDCM operation,a new type-2 fuzzy variable integral PID controller is proposed by combining time-varying domain,variable integration logic,interval type-2 fuzzy set comprehensive judgment and fuzzy proportional-integral-derivative(PID)control rules,which solves the problems of insufficient speed tracking and easy deviation from the target speed in the process of traditional PI control and type-1 fuzzy control.The simulation results show that the application of the type-2 fuzzy variable integral PID control algorithm in the double closed-loop speed control system achieves faster response speed,stronger robustness and smaller overshoot.The proposed method provides a new control idea for the BLDCM system.