基于模糊PID的无刷直流电机控制系统设计开发

Design and Development of Brushless DC Motor Control System Based on Fuzzy PID Control

无刷直流电机(BLDCM)是一个非线性、多变量、强耦合的系统,常规的PID控制难以达到良好的控制效果,模糊PID控制器依据模糊算法在线自整定PID参数,可弥补常规PID的不足之处,提高控制精度,取得更好的控制效果。研究了电机的双闭环控制方案,设计了转速环模糊PID控制器。采用多MOSFETS功率管并联技术实现电机的驱动。在完成电机控制系统硬件和软件设计之后,进行了台架实验,并对实验曲线进行分析,验证了模糊PID控制系统良好的动态、静态性能,证明了控制方案的可行性。

Brushless DC Motor(BLDCM)is a nonlinear,multivariable and strongly coupled system,and the control effect of conventional PID is not good.Fuzzy PID controller with online setting PID parameters can improve control accuracy and obtain better control effect.The dual closed-loop control system was introduced and the fuzzy PID controller was designed to control the speed.The BLDCM is driven by the application of Paralleling of power MOSFETs.After the hardware and software of control system was designed,the experiment was carried out.The experimental results show that the fuzzy PID control system has excellent dynamic and static performance,and the controller is feasible and efficient.