Analysis and Improvement of Vibration in PMSM Based on SMO
In view of obvious vibration and poor observation accuracy in traditional SMO-based perma-nent magnet synchronous motor systems,adaptive gains were introduced into the traditional SMO to re-place fixed gains,and a hyperbolic tangent function was used to replace the conventional switching function.As a result,an improved SMO control strategy was proposed.Furthermore,a system simulation model was constructed using the MATLAB/Simulink platform.The effect of the control strategy was veri-fied and analyzed.The experimental results show that the improved SMO control strategy significantly reduces motor vibration and has high accuracy in estimating rotor position.
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