基于非奇异快速终端超螺旋滑模的PMSM无传感器控制
Sensorless Control of PMSM Based on Non-singular Fast Terminal Super-twisting Sliding Mode
张宇祥 1李白雅 1杨城健 1封志鹏1
作者信息
- 1. 湖南科技大学 信息与电气工程学院,湖南 湘潭 411201
- 折叠
摘要
为了解决传统滑模观测器因自身结构原因存在较大抖振的问题,对传统滑模观测器进行改进.首先,利用非奇异快速终端滑模面代替线性滑模面,并采用超螺旋算法作为控制律,重新设计非奇异快速终端超螺旋滑模观测器;然后,利用李雅普诺夫函数证明其稳定性;最后,在 MATLAB环境下,建立基于非奇异快速终端超螺旋滑模观测器的永磁同步电机(PMSM)无传感器控制系统仿真模型,并进行仿真验证和分析.结果表明:与传统滑模观测器相比,所提出的模型能够有效减小抖振,提高观测精度.
Abstract
Sliding mode observers are widely used in sensorless control of permanent magnet synchronous motor(PMSM),but traditional sliding mode observers have large chattering due to their own structure.To solve this problem,the traditional sliding mode observers are improved.First,the non-singular fast terminal sliding mode surface is used to replace the linear sliding mode surface,while the super spiral algorithm is used as the control law to redesign the non-singular fast terminal super spiral sliding mode observer.Then the Lyapunov function is used to prove its stability.In the MATLAB environment,a PMSM sensorless control system simulation model based on a non-singular fast terminal super spiral sliding mode observer is established for simulation verification and analysis.The simulation results show that compared with the traditional sliding mode observer,the designed method can effectively reduce chattering and improve the observation accuracy.
关键词
永磁同步电机/非奇异快速终端滑模/超螺旋算法/无传感器控制Key words
permanent magnet synchronous motor/non-singular fast terminal sliding mode/super-twisting algorithm/sensorless control引用本文复制引用
出版年
2024
NETL
NSTL
万方数据