A sliding-mode observer design for the unknown disturbance estimation of a PMSM

2015 ◽  
Author(s):  
Tingting Gao ◽  
Yong Zhou ◽  
Jiangshuai Huang ◽  
Wei Wang ◽  
Gang Chen
Keyword(s):  
Sliding Mode ◽  
Sliding Mode Observer ◽  
Observer Design ◽  
Disturbance Estimation ◽  
Unknown Disturbance

scholarly journals Unknown Disturbance Estimation for a PMSM with a Hybrid Sliding Mode Observer

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Gang Chen ◽  
Yong Zhou ◽  
TingTing Gao ◽  
Qicai Zhou
Keyword(s):  
Permanent Magnet ◽  
Digital Filter ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
High Gain ◽  
Sliding Mode Observer ◽  
Time Varying ◽  
Disturbance Estimation ◽  
Simulation Results ◽  
Unknown Disturbance

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.

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