Technical Notes and Correspondence

International Journal of Control, Automation and Systems 2017; 15(5): 2448-2454

Published online September 6, 2017

https://doi.org/10.1007/s12555-015-0198-5

© The International Journal of Control, Automation, and Systems

A Robust Speed Controller with Smith Predictor for A PMSM Drive System with Time Delay

Qixin Zhu*, Lei Xiong, and Hongli Liu

Suzhou University of Science and Technology

Abstract

In this paper, using H∞control theory, a robust speed controller with smith predictor is proposed to improve the speed control performance of the permanent magnet synchronous motor (PMSM) servo system with time delay. The robust speed controller is designed to improve the robustness of control system. Meanwhile, considering the time delay of the system, the speed controller combined with smith predictor is used to compensate the impact of system time delay. Firstly, based on theH∞state space (time domain) method, a robust speed controller is established, which has simple structure and easy to be realized. Secondly, theH∞robust standard design problem is transformed to an optimization solution of the linear matrix inequalities (LMIs). Thirdly, a smith predictor is stalled at the parallel position of the robust speed controller, which is of great help to improve the performance of the servo system with time delay. Finally, simulation results demonstrate that compared with traditional PI controller, the novel robust controller has better control performance and the robust controller with smith predictor is effective for the PMSM drive system with time delay."

Keywords H∞ control, permanent magnet synchronous motor, smith predictor, time delay.

Article

Technical Notes and Correspondence

International Journal of Control, Automation and Systems 2017; 15(5): 2448-2454

Published online October 1, 2017 https://doi.org/10.1007/s12555-015-0198-5

Copyright © The International Journal of Control, Automation, and Systems.

A Robust Speed Controller with Smith Predictor for A PMSM Drive System with Time Delay

Qixin Zhu*, Lei Xiong, and Hongli Liu

Suzhou University of Science and Technology

Abstract

In this paper, using H∞control theory, a robust speed controller with smith predictor is proposed to improve the speed control performance of the permanent magnet synchronous motor (PMSM) servo system with time delay. The robust speed controller is designed to improve the robustness of control system. Meanwhile, considering the time delay of the system, the speed controller combined with smith predictor is used to compensate the impact of system time delay. Firstly, based on theH∞state space (time domain) method, a robust speed controller is established, which has simple structure and easy to be realized. Secondly, theH∞robust standard design problem is transformed to an optimization solution of the linear matrix inequalities (LMIs). Thirdly, a smith predictor is stalled at the parallel position of the robust speed controller, which is of great help to improve the performance of the servo system with time delay. Finally, simulation results demonstrate that compared with traditional PI controller, the novel robust controller has better control performance and the robust controller with smith predictor is effective for the PMSM drive system with time delay."

Keywords: H∞ control, permanent magnet synchronous motor, smith predictor, time delay.

IJCAS
May 2024

Vol. 22, No. 5, pp. 1461~1759

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