摘要
为了解决滑模观测器的抖振问题,本文提出了一种新型的积分滑模观测器方案,并用光滑的双曲正切函数代替传统不连续的开关函数,省去了低通滤波器,并利用李雅普诺夫稳定性判据对其稳定性进行分析。然后分析了边界层大小对SMO反电动势的影响,并确定了最佳的边界层大小。此外,采用dq坐标系下的锁相环代替传统的锁相环,性能特性更为突出,对振荡分量抑制方法更为简单。最后通过仿真实验,比较传统方案和本文方案的估计电流、估计转速和估计位置的波形,验证本文所提积分滑模观测器方案的可行性和性能上的优越性。
To address the chattering problem of sliding mode observers(SMO),this paper proposes a novel integral sliding mode observer scheme.A smooth hyperbolic tangent function is used to replace the traditional discontinuous switching function,eliminating the need for a low-pass filter.The Lyapunov stability criterion is applied to analyze its stability.Then,the influence of boundary layer size on the back electromotive force(EMF)estimated by the SMO is analyzed,and the optimal boundary layer size is determined.In addition,a phase-locked loop(PLL)adapted to the coordinate system is adopted instead of the traditional PLL,which exhibits more prominent performance characteristics and a simpler method for suppressing oscillatory components.Finally,through simulation experiments,the waveforms of estimated current,estimated speed,and estimated position of the traditional scheme and the proposed scheme are compared,verifying the feasibility and performance superiority of the proposed integral sliding mode observer scheme.
作者
肖慧慧
邓阳
Xiao Huihui;Deng Yang(Hunan Engineering Research Center of Special Robot Control Technology and Equipment in Complex Environment,Xiangtan,Hunan 411104,China;Hunan Vocational Institute of Technology,Xiangtan,Hunan 411104,China;State Grid Xiangtan Power Supply Company,Xiangtan,Hunan 411104,China)
出处
《船电技术》
2025年第12期14-20,共7页
Marine Electric & Electronic Engineering
基金
湖南省自然科学基金项目“电力智能巡检电动车用永磁电机全速域驱动控制策略研究”(2024JJ8084)
湖南省教育厅科学研究项目“复杂工况下特种车辆永磁驱动电机全局优化控制研究”(23C0701)。
关键词
永磁同步电机
积分滑模观测器
边界层
无位置传感器控制
锁相环
permanent magnet synchronous motor(PMSM)
integral sliding mode observer
boundary layer
sensorless position control
phase-locked loop(PLL)
