基于改进滑模观测器的PMSM控制研究
Research on PMSM Control Based on Improved Sliding Mode Observer
王秀莲 1胥子晨1
作者信息
- 1. 沈阳理工大学自动化与电气工程学院,辽宁 沈阳 110159
- 折叠
摘要
针对传统滑模观测器在引入切换函数时产生高频抖振的问题,提出了一种基于四阶滑模观测器的解决方案.该方案省去了滑模切换函数的使用,从而降低了在反电动势信息提取过程中高频信号的干扰.通过采用Lyapunov函数证明了观测器的稳定性.为了进一步降低高频信号的干扰,引入了二阶广义积分器(SOGI)用于对非基波信号进行陷波处理,该方法在较大程度上保留了反电动势基波信息.此外,还采用了锁相环(PLL)方法来提取转子位置信息,从而避免了使用反正切方法中的除法运算.最后,在Matlab/Simulink仿真平台上验证了所提出的方法的有效性.
Abstract
To address the issue of high-frequency oscillations generated when introducing switching functions in tradi-tional sliding mode observers,this paper proposes a solution based on a fourth-order sliding mode observer.This solution eliminates the use of sliding mode switching functions,thereby reducing the interference of high-frequency signals in the process of back electromotive force information extraction.The stability of the observer is proven by using a Lyapunov function.In order to further reduce the interference of high-frequency signals,a second-order generalized integrator(SOGI)is introduced to notch-filter non-fundamental signals.This method largely preserves the fundamental information of the back electromotive force.In addition,this paper uses a phase-locked loop method to extract rotor position information,thus avoiding division operations in the use of the arctangent method.
关键词
四阶滑模观测器/二阶广义积分器/锁相环/Simulink仿真Key words
fourth-order sliding mode observer/second order generalized integrator/phase locked loop/Simulink simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据