无刷直流电机抗饱和变结构PI控制研究

无刷直流电机(BLDCM)电流滞环控制系统中转速调节器因存在电流限幅环节会产生积分饱和现象,从而导致了控制系统的超调量增大,动、稳态性能变差等一系列问题。为此,对BLDCM电流滞环控制系统的积分windup现象进行了分析,并将抗饱和变结构PI控制算法应用到BLDCM电流滞环控制系统的转速调节器中。为验证采用控制方法的有效性,在MATLAB/Simulink仿真平台下搭建了控制系统仿真模型,仿真结果表明:相对于传统的PI控制算法,抗饱和变结构PI控制算法能够使系统的积分饱和现象得到抑制,速度响应的超调量更少,到达稳态时间更短,同时还提高了系统对负载扰动的鲁棒性。

Research on Anti-windup Variable Structure PI Control for Brushless DC Motor

The speed regulator in the brushless DC motor （ BLDCM I current hysteresis control system will produce integral saturation due to the existence of the current limiter, thus resulting in increasing overshoot of the control system, deterioration of dynamic/steady-state performance, and other problems. The integral windup of BLDCM current hysteresis control system is analyzed and anti-windup variable structure PI control algorithm is applied to the speed regulator of the control system. To verify the effectiveness of the control method applied in the paper, a control system simulation model is built on the MATLAB ! Simulink simulation platform. The simulation results show that： Compared with the traditional PI control algorithm, the anti-windup variable structure PI control algorithm can suppress integral windup of the system, reduce overshoot of speed response, shorten the time to reach steady-state, and improve system robustness against load disturbance.