基于最小阶扰动估计的永磁同步电机离散比例-积分准滑模控制

doi:10.19595/j.cnki.1000-6753.tces.180736

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Abstract

When PMSM contains system uncertainties and external disturbances, conventional PI control cannot obtain better control performance, and traditional sliding mode control based on continuous-time second-order motion equations can easily induce noises due to the speed differential term. Thus, a minimum-order disturbance estimation based novel discrete proportional-integral sliding mode (DP-ISM) composite speed control scheme is presented. First, based on the first-order discrete PMSM model, a new DP-ISM surface and a robust discrete quasi-sliding mode controller are designed, which can eliminate the steady-state error and realize global robustness. Then, to further improve system anti-disturbance ability and suppress chattering, a minimum-order disturbance estimator is constructed, which combines with the DP-ISM controller to form two degrees of freedom. It has simple design and the minimum observer dimension. Finally, the stability of the composite controller is theoretically proved and a dSPACE-based experimental platform is built to verify the superiority of the presented algorism.

Key words： Permanent magnet synchronous motor (PMSM) discrete-time sliding mode minimum- order disturbance estimation composite control

Received: 27 April 2018 Published: 29 December 2018

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TM351

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	Zheng Changming
	Zhang Jiasheng

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Zheng Changming,Zhang Jiasheng. Minimum-Order Disturbance Estimation Based Discrete-Time Proportional-Integral Quasi-Sliding Mode Control for Permanent Magnet Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2018, 33(24): 5711-5719.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180736 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I24/5711

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