感应电动机调速系统的二自由度免疫内模控制

摘要

Based on the theory of two-degree-of-freedom IMC and immune algorithm,a modified two-degree-of-free-dom immune internal model controller is used in AC speed regulating system of induction motor.The controller has two adjustable parameters which use the adaptive immune feedback algorithm to adjust filtering time constant on-line.It relieves the contradiction between the robustness and rapidity which is caused by the fixed filtering time constant (adjustable parameter)of IMC.The system has good following performance and immunity performance simultaneously,when the controller is used.The simulation results show that the control performance of AC speed regulating system of induction motor is improved.%针对感应电动机调速系统，将二自由度内模控制和免疫算法结合起来，设计了一种改进型的二自由度免疫内模控制器。该控制器有两个利用免疫算法进行调整的调节参数，它不仅使内模控制器中因固定滤波时间常数（可调参数）引起的鲁棒性和快速性之间的矛盾得到有效缓解，而且可以使感应电动机调速系统独立控制跟随性能和抗扰性能。仿真结果表明，改进型二自由度免疫内模控制器改善了感应电动机调速系统的控制性能。