脉冲负载下的永磁同步电机随机扰动衰减研究

摘要

For the speed tracking control problem of the PMSM servo system with the stochastic disturbance and impulsive load, the stability of the system under a given controller is discused. It depend on the stability theory of the impulsive system. In such servo system, the original dynamic model is transformed into a controlled impulsive error system after being viewed the motor speed and load as state variables. Theoretical analysis demonstrates that the controller can ensure that the system is Lyapunov stability as well as can achieve disturbance attenuation. Numerical experiments show that the controlled system can effectively suppress stochastic disturbance and impulsive load. The speed output can track the reference signal.%针对随机扰动及脉冲负载下的永磁同步电机速度跟踪控制问题,利用脉冲系统的稳定性理论,对以电机转速和负载为状态变量的脉冲系统进行分析,获得系统的稳定性结论.理论分析获证,受控系统在控制器作用下是李亚普诺夫稳定的,并能实现扰动衰减.数值实验表明,所获控制方案能有效抑制系统的随机扰动以及脉冲负载扰动,系统输出跟踪能力强.