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Unknown Disturbance Estimation for a PMSM with a Hybrid Sliding Mode Observer (2015)

Gang Chen, Yong Zhou, Ting; Ting Gao, and Qicai Zhou

Hindawi

In: Mathematical Problems in Engineering

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Publication Date: 2015-05-22

Description: A hybrid sliding mode observer that combines high gain feedback and a high-order sliding mode term is developed to identify the time-varying disturbance for a permanent-magnet synchronous motor (PMSM). Based on the measurable current and the position, the unknown disturbance can be identified from the sliding mode term without digital filter effect. It is then used to enhance the robustness of the speed control dynamics. For ease of implementation in real applications, such as DSP and FPGA, the proposed observer is properly designed to avoid complex mathematical operators. Simulation results are given to illustrate the performance of the proposed observer.

Print ISSN: 1024-123X

Electronic ISSN: 1563-5147

Topics: Mathematics , Technology

Published by Hindawi

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