河北科技大学学报2025，Vol.46Issue(4)：366-374,9.DOI:10.7535/hbkd.2025yx04002
考虑端部效应的电磁直线执行器解析建模方法
Analytical modeling method for electromagnetic linear actuators considering end effects
摘要
Abstract
In order to solve the problem of magnetic field distortion caused by the high magnetic permeability of the end cover of moving coil electromagnetic linear actuator,which leads to fluctuations in the thrust of actuator and the inaccuracy of the analytical solution,a magnetic field analytical modeling method combining the pseudo-period method and the magnetic vector potential method was proposed.Considering the end effect,the virtual array was extended to both sides of the permanent magnet and winding array in the pseudo-period to compensate the end magnetic circuit,and the analytical expressions of the magnetic field distribution of the open circuit and armature reaction were derived in the form of Fourier series.On this basis,the analytical expression of electromagnetic thrust was derived by Lorentz force method.The results show that compared with finite element simulation,the maximum error of the analyzed thrust value is 9.04%when ignoring the end cap,while the maximum error of the analyzed thrust value is 3.97%when considering the end effect,which verifies the effectiveness of the proposed method;the average relative error of the experiment is 3.77%,which verifies the correctness of the proposed method.This method can effectively consider the influence of the end cap on the magnetic field distortion,which provides theoretical reference for solving the electromagnetic characteristics of the electromagnetic linear actuator quickly and accurately,optimizing the structural parameters and the control process.关键词
电机学/动圈式电磁直线执行器/解析建模/伪周期法/端部效应Key words
electrical machinery/moving coil electromagnetic linear actuator/analytical modeling/pseudo-periodic method/end effect分类
信息技术与安全科学引用本文复制引用
李钰鑫,李波,葛文庆,陆佳瑜,陈杰炜..考虑端部效应的电磁直线执行器解析建模方法[J].河北科技大学学报,2025,46(4):366-374,9.基金项目
国家自然科学基金(52375105,52305265,52411540234) （52375105,52305265,52411540234）
山东省自然科学基金(ZR2022YQ51,ZR2023ME177) （ZR2022YQ51,ZR2023ME177）
山东省重大科技创新工程项目(2023CXGC010211) （2023CXGC010211）
