耐高压大行程高速开关电磁铁的动态特性  

Dynamic characteristics of high-pressure long-stoke high-speed on-off solenoid

作　　者：满军[1] 丁凡[1] 李勇[1,2] 姚健娣[1] 

机构地区：[1]浙江大学流体传动与控制国家重点实验室,浙江杭州310027 [2]温州大学机电工程学院,浙江温州325035

出　　处：《煤炭学报》2010年第5期871-875,共5页Journal of China Coal Society

基　　金：浙江省重大科技专项基金资助项目(2008C11028)

摘　　要：由于传统以磁路计算为基础的动态特性计算精度较低,基于有限元方法建立了电磁铁的动态数学模型,并通过实验进行了验证,电流误差<4%,响应误差<6%,证明模型是可信的。在此基础上,对耐高压大行程高速开关电磁铁进行动态仿真,分析探讨了盆形极靴的结构参数对动态特性的影响规律。研究结果表明:为使电磁铁动态特性最优,盆口高、导套厚度、隔磁角和隔磁环长度有最佳值,径向间隙应尽可能小;考虑到耐压强度和成本,导套厚度和径向间隙均不能过小。结合实际设计要求,采用优化后的结构参数研制的耐高压大行程高速开关电磁铁在4mm行程时的响应时间为24.95ms。A dynamic model of solenoid based on finite element analysis was presented to deal with the conventional low-fidelity calculation of magnetic circuit for dynamic analysis. The results from a simulation based on the model were verified by those from experiments while current errors were less than 4% and response errors were less than 6%. The dynamic simulation analysis of the main structure parameters which might effect its dynamic characteristics,were performed for high-pressure long-stroke high-speed on-off solenoids. Research results show that basin height,thickness of guide sleeve,nonmagnetic ring length and nonmagnetic ring angle have intermediate value and radial gap has minimal value for optimal dynamic characteristics. Considering pressure strength and cost,thickness of guide sleeve and radial gap can not be too small. Based on optimal design parameters selection and engineering practice,the response time of the high-pressure long-stroke high-speed solenoid is 24. 95 ms with a stroke of 4 mm.

关 键 词：耐高压 大行程 高速开关电磁铁 动态特性 盆形极靴 

分 类 号：TH137.5[机械工程—机械制造及自动化]