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考虑动态端部效应与负载扰动的单边直线感应电机预测电流补偿控制

DOI: 10.13334/j.0258-8013.pcsee.2015.15.026, PP. 3956-3963

Keywords: 单边直线感应电机,电流补偿,预测控制,动态响应,非线性扰动观测器

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Abstract:

论文提出一种针对单边直线感应电机(single-sidedlinearinductionmotors,SLIMs)的基于非线性负载扰动观测器的预测电流补偿控制策略。首先考虑到SLIM特有的动态端部效应的影响,通过跟踪补偿M-轴电流分量来维持次级磁链T-轴分量的恒定,而后在一次线性条件下,引入一阶离散泰勒级数对速度状态进行预测。另一方面将电机气隙变化与各类边端效应对电机推力输出的影响统一为系统受到负载扰动的影响,而应对此扰动,通过非线性扰动观测器,在预测前向控制通路增加了实时补偿控制量,借此提升整个预测控制系统的鲁棒特性。最后实验对所提算法的有效性进行了验证。

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