摘要
针对传统滑模观测器(SMO)存在的抖振及相位延迟问题,提出一种自适应模糊滑模观测器来实现永磁同步电机(PMSM)无传感器控制.根据Lyapunov稳定性定理构建自适应模糊滑模观测器,以保证系统的稳定性.通过分析滑模增益对系统抖振的影响设计模糊控制系统,从而实现对滑模增益的动态调整,削弱抖振现象,提高系统的鲁棒性.建立反电动势观测器代替低通滤波器,避免相位延迟,从而提高系统的稳定性及准确跟踪性.仿真结果验证了所提出方法的可行性.
To solve the problem of chattering and phase delay in traditional sliding mode observer（SMO）, an adaptive fuzzy sliding mode observer for sensorless control of permanent magnet synchronous motor（PMSM） is proposed. According to the Lyapunov stability theorem, an adaptive fuzzy sliding mode observer is constructed to guarantee the stability of the system. A fuzzy control system is designed by analyzing the influence of sliding mode gain on the chattering of the system. The fuzzy control system can adjust the gain of the sliding mode dynamically, weaken the chattering phenomenon and improve the robustness of the system. The back electromotive force（EMF） observer is established to replace the low-pass filter to avoid the phase delay. At the same time, the stability and accurate tracking of the system can be improved. The simulation results show the feasibility of the proposed method.
作者
彭思齐
宋彦彦
PENG Si-qit, SONG Yan-yan(College of Information Engineering, Xiangtan University, Xiangtan 411105, Chin)
出处
《控制与决策》
EI
CSCD
北大核心
2018年第4期644-648,共5页
Control and Decision
关键词
永磁同步电机
无传感器
滑模观测器
模糊控制
permanent magnet synchronous motor
sensorless
sliding mode observer
fuzzy control
