永磁同步电机滑模变结构MRAS转速辨识

Sliding Mode Variable Structure MRAS Speed Estimator for Permanent Magnet Synchronous Motors

结合模型参考自适应方法和滑模变结构方法的各自优点,提出了一种新型永磁同步电机速度估计器。首先给出了永磁同步电机的数学模型,并在此基础上设计了积分反步控制与滑模变结构模型参考自适应系统相结合的无速度传感器矢量控制系统。积分反步控制法和滑模变结构模型参考自适应分别实现了给定速度、电流的无静差跟踪以及对实际速度的快速准确跟踪。利用Lyapunov函数证明了所设计的控制器的稳定性。最后仿真结果表明所提出的方法能够实现速度的快速精确跟踪控制。

Based on the advantages of the model reference adaptive method and the sliding mode variablestructure method,a new type of permanent magnet synchronous motor speed estimation was proposed.Firstly,themathematical model of the permanent magnet synchronous motor was presented,and then the non speed sensor vectorcontrol system based on the backstepping controller with integral action and sliding mode variable structure modelreference adaptive system was designed.The backstepping controller with integral action method and the sliding modevariable structure model reference adaptive system were used to realize the given speed,the non static error trackingof the current,the fast and accurate tracking of the actual speed.The stability of the controller designed was proved byusing the Lyapunov function.Finally,the simulation results show that the proposed method can achieve fast andaccurate tracking control.