永磁同步电机抗扰控制技术优化设计

摘要

在某些自动化设备中,对永磁同步电机常具有较高的稳定性要求和抗扰要求,故针对永磁同步电机位置伺服系统设计了一种高性能抗扰控制策略,采用等价输入干扰(EID)估计器来估计和补偿系统所受干扰,采用backstepping方法保证系统稳定性,并在此基础上引入电流前馈提升系统在负载突变时的响应速度,对系统的抗扰性能进行优化.仿真结果表明,所设计的抗扰控制策略可以使系统在干扰作用下保持较高精度的阶跃响应和信号跟踪能力,具有良好的稳定性和抗扰特性,对永磁同步电机抗扰控制技术优化有一定的可行性和参考价值.%Some automatic devices often have high stability and disturbance suppression requirements to permanent magnet synchronous motors,on this basis,a high performance disturbance suppression control strategy is designed to apply to PMSM position servo system.This strategy utilizes an equivalent input disturbance (EID) estimator to estimate and compensate disturbance the system suffered,adopts the back-stepping control method to realize the stability of the system,and adopts the current feed-forward control method to improve response speed of the system with load mutation,thus realizing the optimization of the disturbance suppression performance of the system.The results of simulation show that the designed disturbance suppression control strategy could make the system maintain high accuracy of step response and signal tracking performance under the effect of disturbance,featuring with good stability and disturbance suppression performance,which has some feasibility and reference value for the optimization of disturbance suppression control to the permanent magnet synchronous motor.