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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
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Title A Study on the Load Torque Observer based on Fuzzy Logic Control for a PM Synchronous Motor
Authors Jin-Woo Jung ; Dong-Myung Lee
DOI http://dx.doi.org/10.5207/JIEIE.2010.24.10.026
Page pp.26-32
ISSN 1225-1135
Keywords Fuzzy Load Torque Observer ; Permanent Magnet Synchronous Motor ; Speed Control
Abstract This paper proposes a new load torque observer based on the Takagi-Sugeno fuzzy method for a permanent magnet synchronous motor(PMSM). A Linear Matrix Inequality(LMI) parameterization of the fuzzy observer gain is given, and the LMI conditions are derived for the existence of the fuzzy load torque observer guaranteeing α-stability and linear quadratic performance. In this paper, a nonlinear speed controller is employed to validate the performance of the proposed fuzzy load torque observer, and various simulation results are presented under motor parameter and load torque variations.