基于前馈补偿的模糊PI永磁同步电机调速系统

针对永磁同步电机在负载突变或受干扰时存在鲁棒性差、抗干扰性能不足等问题,提出一种基于前馈补偿的永磁同步电机模糊PI控制调速系统。此系统将电机联结轴的摩擦力、负载所需要的力矩以及负载惯量所产生的力作为总扰动,建立扰动前馈模块,将总扰动辨识出来,并且补偿到速度环上,可以很好地解决在电机负载变化时,电机的响应速度无法跟上系统的问题。对比模型的仿真结果表明,基于前馈补偿的模糊PI永磁同步调速系统具有较好的抗干扰性能和鲁棒性。

Fuzzy PI Permanent Magnet Synchronous Motor Speed Control System Based on Feedforward Compensation

In view of the flaws of poor robustness and anti-jamming performance found in permanent magnet synchronous motor (PMSM) under sudden load changes or disturbance, a proposal has been made of a fuzzy PI control speed regulation system for permanent magnet synchronous motor based on feedforward compensation. This new system, with the frictional force of the motor coupling shaft, the momentum needed by the load and the force produced by the inertia of the load as the total disturbance, seeks to establish a disturbance feedforward module so as to identify the total disturbance, and with its compensation to the speed loop, a solution can be achieved of the problem that the response speed of the motor fails to keep up with the system with the motor load changes. The simulation results show that the fuzzy PI permanent magnet synchronous speed control system, which is based on feedforward compensation, is characterized with the advantages of super anti-disturbance performance and robustness.