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感应电机高阶终端滑模磁链观测器的研究

DOI: 10.3724/SP.J.1004.2012.00288, PP. 288-294

Keywords: 磁链观测器,非奇异终端滑模,高阶滑模,感应电机

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Abstract:

?提出了基于高阶非奇异终端滑模的感应电机转子磁链观测方法,用于实现感应电机的按转子磁链定向控制.设计了非奇异终端滑模面及观测器的控制策略,利用所设计的控制策略推导出电机转子磁链信息.为了抑制常规滑模存在的抖振现象,设计了定子电流观测器的高阶滑模控制律,可将控制信号直接用于电机转子磁链的估计.较常规滑模观测器,所提方法具有较高的观测精度,并对电机参数变化具有良好的鲁棒性.仿真结果验证了方法的有效性.

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