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基于最小二乘支持向量机优化自抗扰控制器的永磁同步电机直接转矩控制方法

DOI: 10.13334/j.0258-8013.pcsee.2014.27.012, PP. 4654-4664

Keywords: 永磁同步电机,直接转矩控制,最小二乘支持向量机回归,自抗扰控制

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Abstract:

针对传统PI调节器的缺陷,提出一种基于最小二乘支持向量机(leastsquaressupportvectormachine,LSSVM)优化自抗扰控制器(active-disturbancerejectioncontrol,ADRC)的永磁同步电机直接转矩控制方法。以给定转速和实际转速作为输入信号,以给定电磁转矩作为输出信号,设计了ADRC速度调节器;在此基础上,在回归模型中选取高斯径向基核函数,深入分析了将LSSVM回归模型有效嵌入ADRC调节器的实现方法,实现对ADRC控制器的优化,以提高ADRC观测精度及系统动态响应速度,很大程度上降低了电机参数变化和负载扰动对系统的影响,进一步改善了系统的抗干扰能力。仿真和实验结果验证了该方法的可行性和有效性。

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