永磁同步电机抗抖振滑模控制算法研究

将永磁同步电机(PMSM)双闭环矢量控制中的电流环调节器与一阶速度模型相结合,得到调速系统二阶模型。在此基础上,设计了基于指数趋近率的滑模控制器,实现系统渐进跟踪,且在一定程度上减小了控制器抖振。利用扩张状态观测器测量系统扰动,对控制量进行补偿,进一步减小了控制器抖振。通过Lyapunov稳定性定理证明了闭环控制系统的渐进稳定性,同时仿真和实验均验证了控制器的有效性。

Sliding-mode Control for Chattering Reduction in PMSM Control

The second-order model of permanent magnetic synchronous motor(PMSM) speed control system can be in-ferred by the combination of current loop transfer function for vector control and the first-order rate model.Based on the second-order model,a new sliding-mode Controller with exponentially reaching law is proposed.The asymptotic tracking is got by the controller and the chattering is reduced.Furthermore disturbance quantity can be measured by the extended state observer(ESO).Through adding compensation quantity for disturbance,the chattering can be reduced further.The asymptotically stability is got by Lyapunov stability theory and the both simulation and experiments results show the validity of the controller.