电磁继电器振动极限加速度分析方法  

The Analyzing Method of Limit Vibration Acceleration for the Electromagnetic Relays

作　　者：任万滨[1] 陈英华[1] 康云志[1] 王立忠 崔黎 

机构地区：[1]哈尔滨工业大学军用电器研究所,哈尔滨150001 [2]桂林航天电子有限公司,桂林541002

出　　处：《电工技术学报》2011年第1期63-67,共5页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50777010);哈尔滨市科技创新人才研究专项资金(2008RFQXG043);哈尔滨工业大学优秀青年教师培养计划(HITQNJS.2009.024)资助项目

摘　　要：以典型电磁继电器为研究对象,针对基频谐振部件衔铁触簧组所具有的刚柔耦合结构特征,应用有限元法建立了其振动特性数学模型,通过自由振动方程与受迫振动方程的数值求解,完整地提出了该类继电器固有频率及振动极限加速度的分析方法。将实例计算结果与应用高速摄像机拍摄的衔铁触簧组振动位移响应对比,验证了本方法的有效性与准确性,在此基础上进一步分析了激振频率与继电器振动极限加速度之间的关系。最后,将计算所得的触点位移响应转化为继电器接触电阻值并与实验测试结果比较分析。本文的研究方法及所得结论可为机械振动条件下电磁继电器触点接触失效问题的解决提供参考价值。The spring sets connected with armature component in the electromagnetic relay,is the typical rigid-flexible coupling structure.It also could be taken as the vulnerable part when the relay working in the mechanical environment.The vibration characteristics mathematical model of the relay is built by using finite element method,thus the analyzing method of limit vibration acceleration are presented completely by numerically solving the free vibration equation and forced vibration equation.The comparisons between the example calculation results and the displacement responses of spring sets which are recorded by using high speed camera are investigated.Thus the validity and the accuracy of the analyzing method are verified.And the relationship between the excited frequency and the limit vibration acceleration are obtained.Finally,the contact resistance is calculated through the obtained displacement responses of contacts and compared with the test results too.The analysis method and conclusions are valuable in solving the electromagnetic relay contact failure caused by mechanical vibration.

关 键 词：电磁继电器 衔铁触簧组 刚柔耦合 振动模态 振动极限加速度 

分 类 号：TM581.3[电气工程—电器]