基于二自由度内模控制的永磁同步电动机转速环研究

Research on Speed Loop of Permanent Magnet Synchronous Motor Based on Internal Model Control with Two Degree of Freedom

针对永磁同步电动机高性能调速系统的要求,在二自由度控制方法的基础上,结合内模控制可实现低精度模型无差控制的特点,提出一种简化算法来设计转速调节器。该方法不但有效地减少了控制器的设计步骤而且使得控制器结构更为简单,从而使计算时间进一步减小。仿真和实验结果表明:该控制器不仅实现了系统跟随性能和抗干扰性能分别独立调节,且实现了系统跟随性能和抗干扰性能同时达到最优。

Based on the internal model control with two degree of freedom principle,and combined with the characteristics of internal model control of realizing error free control with low precision model,a simplified method was proposed for high performance requirement of permanent magnet synchronous motor speed control system to design speed regulator. This method not only reduces the design step of the controller effectively,but also makes the structure simple,and the computation time is reduced. Simulation and experimental results show that the tracking performance and the disturbance rejection performance of the system can be adjusted independently,both them can achieve optimal simultaneously.