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A new reaching law for anti-disturbance sliding-mode control of PMSM speed regulation system

Wang, Yaoqiang, Feng, Yutao, Zhang, Xiaoguang and Liang, Jun 2019. A new reaching law for anti-disturbance sliding-mode control of PMSM speed regulation system. IEEE Transactions on Power Electronics , p. 1. 10.1109/TPEL.2019.2933613

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Abstract

In this paper, in order to optimize the dynamic performance of the permanent magnet synchronous motor (PMSM) speed regulation system, a nonlinear speed-control algorithm for the PMSM control systems using sliding-mode control (SMC) is developed. First, a sliding-mode control method based on a new sliding-mode reaching law (NSMRL) is proposed. This NSMRL includes the system state variable and the power term of sliding surface function. In particular, the power term is bounded by the absolute value of the switching function, so that the reaching law can be expressed in two different forms during the reaching process. This method can not only effectively suppresses the inherent chattering, but also increases the velocity of the system state reaching to the sliding-mode surface. Based on this new reaching law, a sliding-mode speed controller (SMSC) of PMSM is designed. Then, considering the large chattering phenomenon caused by high switching gain, an improved anti-disturbance sliding-mode speed controller(ADSMSC) method, called SMSC+ESO method, is developed. This method introduces an extended state observer (ESO) to observe the lumped disturbance and adds a feedforward compensation item based on the observed disturbances to the SMSC. Finally, simulation and experimental results both show the validity of the proposed control method.

Item Type: Article
Date Type: Published Online
Status: In Press
Schools: Engineering
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
ISSN: 0885-8993
Date of First Compliant Deposit: 12 August 2019
Date of Acceptance: 26 July 2019
Last Modified: 20 Oct 2019 10:55
URI: http://orca.cf.ac.uk/id/eprint/124871

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