电机与控制应用2017，Vol.44Issue(6)：31-34,4.
基于模糊滑模观测器的永磁同步电机进给系统速度估计
Speed Sensorless Control of Permanent Magnet Synchronous Motor Based on Fuzzy Sliding Mode Observer
摘要
Abstract
To solve many defects existing in the mechanical speed sensor of servo system,a fuzzy sliding mode speed observer was proposed for the feed system of the permanent magnet synchronous motor.Focused on the chattering problem of conventional sliding mode observer (SMO),sigmoid function was used instead of the traditional ideal switch function and fuzzy control system was used to adjust the gain of the SMO.This method could decrease undesirable chattering phenomenon and realized the soft control.Detecting back EMF could be done directly from switching signal without any low pass filter.So the delay time because of low-pass filter,in the proposed observer was eliminated and there was no need to compensate phase fault in position estimating.The asymptotic stability of the designed sliding mode observer was proved by Lyapunov function.The simulation results showed that the designed fuzzy sliding mode observer could accurately identify the rotor speed of PMSM,and had good dynamic and static performance.关键词
永磁同步电机/模糊滑模观测器/Sigmoid函数/无速度传感器Key words
permanent magnet synchronous motor (PMSM)/fuzzy sliding mode observer/sigmoid function/sensorless control分类
信息技术与安全科学引用本文复制引用
崔皆凡,马桂新,谢炜..基于模糊滑模观测器的永磁同步电机进给系统速度估计[J].电机与控制应用,2017,44(6):31-34,4.基金项目
辽宁省特聘教授专项资助基金(辽教发[2012]145号) （辽教发[2012]145号）
