Research on Sensorless Control of PMSM Based on Sliding Mode Observer

Zhi Yu Huang; Xi Zheng

doi:10.4028/www.scientific.net/AMM.668-669.637

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 668-669Research on Sensorless Control of PMSM Based on...

Research on Sensorless Control of PMSM Based on Sliding Mode Observer

Abstract:

In the foundation of the realization of sensorless control of permanent magnet synchronous motor(PMSM) based on the traditional sliding mode observer, the paper focuses on the research on the chattering impacts on the estimation of rotor position and speed, which are caused by the sliding mode variable structure control. To weaken the chattering, the paper proposes two kinds of methods. First, the paper designs the saturation function with boundary layer thickness variable instead of sign function in the traditional sliding mode observer. Meanwhile, let the phase-locked loop (PLL) combine to the sliding mode observer, and construct the rotor position signal detection unit. Finally, the paper verifies the correctness and effectiveness of the proposed methods through the theoretical analysis and simulation.

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Periodical:

Applied Mechanics and Materials (Volumes 668-669)

Pages:

637-640

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.668-669.637

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Online since:

October 2014

Authors:

Zhi Yu Huang*, Xi Zheng

Keywords:

Improved Saturation Function, PLL, PMSM, Sensorless Control, SMO

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