北京航空航天大学学报2026，Vol.52Issue(6)：1803-1809,7.DOI:10.13700/j.bh.1001-5965.2024.0291
基于改进滑模观测器的电磁直线执行器无位移传感器控制
Displacement sensorless control of electromagnetic linear actuator based on an improved sliding mode observer
摘要
Abstract
A displacement estimation technique based on BP neural networks is suggested to enhance the super-twisting sliding mode observer in order to address the installation challenges,cost rise,and stability reduction of electromagnetic linear actuators induced by the usage of displacement sensors.Combined with an adaptive integral robust control algorithm,the displacement sensorless control of the electromagnetic linear actuator is realized.A non-singular fast terminal sliding mode surface is designed with the continuous hyperbolic tangent function as the switching function in order to reduce the buffeting phenomenon and enhance the displacement estimation performance of the super-twisting sliding mode observer;in terms of the observer's parameter adjustment,the BP neural network is designed to dynamically adjust the super-twisting sliding mode observer's gain using the input of the mover speed.The motion control performance test platform of the electromagnetic linear actuator is established,and the displacement estimation and feedback control results are analyzed.The results show that the maximum displacement estimation error of the improved sliding mode observer is reduced by 16.22%under the step condition and 9.10%under the sine condition with the frequency of 2 Hz compared with the super-twisting sliding mode observer;the control performance of displacement sensorless control is equivalent to that of displacement sensor control.The steady state error of the two is 0.03 mm under the 8 mm step condition,and the maximum error is 0.43 mm under the sinusoidal condition with the frequency of 2 Hz.This proves the effectiveness and practicability of the displacement sensorless control of the electromagnetic linear actuator based on an improved super-twisting sliding mode observer.关键词
电磁直线执行器/超螺旋滑模观测器/神经网络/双曲正切函数/无位移传感器控制Key words
electromagnetic linear actuator/super-twisting sliding mode observer/neural network/hyperbolic tangent function/displacement sensorless control分类
航空航天引用本文复制引用
葛文庆,李德同,宋亚东,谭草,李波..基于改进滑模观测器的电磁直线执行器无位移传感器控制[J].北京航空航天大学学报,2026,52(6):1803-1809,7.基金项目
国家自然科学基金(52375105) （52375105）
山东省自然科学基金优秀青年基金项目(ZR2022YQ51) （ZR2022YQ51）
山东省自然科学基金(ZR2023ME178,ZR2023ME177) （ZR2023ME178,ZR2023ME177）
山东省高等学校"青创科技计划"团队项目(2022KJ232) National Natural Science Foundation of China(52375105) （2022KJ232）
Outstanding Youth Fund Project of Shandong Provincial Natural Science Foundation(ZR2022YQ51) （ZR2022YQ51）
Shandong Provincial Natural Science Foundation(ZR2023ME178,ZR2023ME177) （ZR2023ME178,ZR2023ME177）
Innovation Team Project of"Qing-Chuang Science and Technology Plan"of Colleges and Universities in Shandong Province(2022KJ232) （2022KJ232）
