磁悬浮平台中开环磁路的漏磁通分析  

Analysis of Leakage Magnetic Flux on Open Magnetic Loop of Magnetic Suspension Platform

作　　者：吴国庆[1] 钱小磊[1] 张旭东[2] 孙后全 

机构地区：[1]南通大学机械工程学院,江苏南通226019 [2]南通大学电气工程学院,江苏南通226019

出　　处：《组合机床与自动化加工技术》2014年第3期29-32,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目"磁悬浮直线进给单元及智能动态解耦控制的研究"(60974049)

摘　　要：在电磁单元中,E型电磁铁、工作气隙和支承导轨构成开环磁路,它是研究磁悬浮平台的核心内容。建立工作气隙值与输出电磁力之间的数学模型对实现工作平台稳定悬浮控制有着重要意义。线圈通电后激发源磁场,通过开环磁路传递至气隙区域,产生支撑悬浮力,达到平衡平台自重及工件载荷的目标。同时,气隙值会出现一定的波动,直接影响了该悬浮力的大小。研究工作考虑了漏磁通因素,建立了改进后数学模型,得到了更为精确的符合工程实际的气隙和电磁力的关系,避免了开环磁路中各段磁阻非线性的假设。仿真结果表明,该数学模型建立的电磁力精确计算数值接近预期目标。Open magnetic loop has been core content in magnetic suspension platform,which includes E-shape Electromagnetic iron and working gap and support guide.It is quite significant for controlling working table to establish a kind of mathematical model between working gap and export electromagnetic force.Galvanical cores immediately excite original magnetic field,and create support suspension force through working gap to balance gravity of the platform and working loads.Meanwhile,working gap will change more or less which has been directly influencing the force.The research takes leakage magnetic flux in consideration and installs modified mathematical model and obtain some considerable and practical relation between working gap and electromagnetic force,to some extent,avoiding hypothesis about nonlinear reluctances in different segments.Simulation results have proved that mathematical model matches targets.

关 键 词：磁悬浮 电磁力 气隙值 漏磁通 

分 类 号：TH16[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]