基于模糊控制的对转永磁无刷直流电动机调速系统

Counter Rotating Permanent Magnet Brushless DC Motor Based on Fuzzy Control

在分析对转永磁无刷直流电动机的基本原理和数学模型基础上,提出外环转速环采用分离积分项的双输入模糊控制器,内环电流环采用PI调节器的双闭环调速系统。仿真结果表明,与外环、内环均采用PI调节器的双闭环调速系统相比,该系统在恒速运行突加负载的情况下,具有转速变化小、稳定性好的优点,是一种比较优越的控制方法。

Based on the fundamental principle and mathematical model of counter rotating permanent magnet brushless DC motor,a novel bi-closed-loop speed regulating system was proposed in which the outer speed loop employed two input fuzzy controller with seperated integral component and the inner current loop used PI regulator.Compared with the one whose outer and inner loops both used PI regulators,the simulation illustrates that it has less speed change and better stability under the circumstance of shock load to constant-speed-running and proves that it is a superior method.