摘要
Abstract
In order to solve the control discontinuity problem caused by the traditional sliding-mode observer using symbolic function,a new smooth and continuous switching function is proposed to replace the symbolic function,which is used in the design of a new reaching law to alleviate the chattering problem of the traditional sliding-mode observer,and angle error compensation is introduced to solve the phase lag problem caused by low-pass filter and other factors.Taking the surface-mounted permanent magnet synchronous motor as an example,a model was established by Matlab for simulation and comparative analysis,and the motor test bench was established to verify the proposed improvement ideas.The test results show that the improved design proposed in this paper can effectively mitigate the chattering problem in the traditional sliding-mode observer and improve the observation accuracy to some extent.关键词
永磁同步电动机/无传感器控制/新型趋近律/角度估计误差补偿/滑模观测器Key words
permanent magnet synchronous motor/sensorless control/new reaching law/angle estimation error compensation/sliding-mode observer分类
机械制造
