基于反推控制的永磁同步电动机速度的模糊控制

Fuzzy Control of Speed of Permanent Magnet Synchronous Motor Based on Backstepping Control

在永磁同步电动机速度跟踪系统中,电机参数的变化会导致系统出现一定的波动。针对此问题,本文提出了把模糊控制和反推控制相结合的控制策略,通过模糊控制器调节反推控制系统中的反推参数来改善系统的速度跟踪性能。该方法不仅能够实现永磁同步电动机系统的完全解耦,保证系统全局渐进稳定;并且通过模糊控制器对系统中反推参数的实时调整,能够在电机参数发生变化时实现快速的速度跟踪,使系统具有较强的鲁棒性和良好的伺服性能。通过Matlab仿真及实验结果验证了系统设计的有效性和可行性。

Due to the changes of the motor parameters, the speed tracking system of permanent magnet synchronous motor(PMSM) will appear fluctuation. In order to deal with the problems, this paper presents a control strategy which unifies fuzzy control with backstepping control to deal with this problem. By the fuzzy controller adjusting backstepping parameters of the system, the method will improve the system speed tracking performance. The method is able to realize complete decoupling of the PMSM system, and ensure the control system global asymptotically stable. Moreover, by the fuzzy controller on real time adjusting the backstepping parameters, the system can realize fast speed tracking when the parameters of the motor have changed. The control system also can get a good robustness and servo performance. The simulational and experimental results verify the efficiency and feasibility of the system design.