A Novel Sliding Mode Observer for Sensorless Control of Permanent Magnet Synchronous Motor
A new sliding-mode observer is proposed to solve the problem of chattering and phase delay of sliding-mode observer control system due to switching of high frequency signal.Instead of the symbolic function in the traditional sliding mode observer,the saturation function in the quasi-sliding mode observer is used to replace the symbolic function in the traditional sliding mode observer,and the stability of the system is analyzed by the Lyapunov stability criterion.The simulation results show that the new sliding mode observer can effectively reduce the chattering phenomenon and accurately estimate the rotor position and speed information.
permanent synchronous motorsliding mode observercounter-electromotive forcesensorless control
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维普
