自适应补偿器永磁同步电机积分型连续滑模控制

Integral continuous sliding mode control strategy with adaptive compensator for permanent magnet synchronous motor

考虑参数不确定、齿槽转矩、谐波反电动势及电压源逆变器非线性畸变等非理想因素,为提高永磁同步电机驱动系统对参数不确定及非线性扰动下的鲁棒性、高动态特性,提出一种带自适应扰动补测器的积分型连续滑模控制策略。连续滑模控制器无抖振且保证了闭环系统在参数不确定和扰动下的有界。滑模面上的自适应扰动补偿器一方面降低了滑模控制器增益,另一方面保证了系统渐进收敛。最后,通过仿真分析验证了所提控制策略的有效性和优越性。

In order to improve the parameter and nonlinear disturbance robustness and dynamics of permanent magnet synchronous motor drive system,an integral continuous sliding mode controller with adaptive disturbance observer is proposed,in which the parameter uncertainty,cogging torque and voltage source inverter nonlinear distortion are considered. The sliding mode controller avoided the chattering and made the system bounded with parameter uncertainty and nonlinear disturbance. Meanwhile,the adaptive disturbance compensator which moved on the sliding mode surface reduced the gain of the sliding mode controller and made the system asymptotically stable. At last,the resualts of the simulations verify the feasibility and the superiority of the control strategy.