触头设计参数对电磁继电器非线性振动特性的影响分析  

EFFECT OF CONTACT PARAMETERS ON NON-LINEAR VIBRATION CHARACTERISTICS OF ELECTROMAGNETIC RELAY

作　　者：任万滨[1] 陈英华[1] 翟国富[1] 戴景民[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《振动与冲击》2008年第3期136-139,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(编号:50777010);中国博士后科学基金资助项目

摘　　要：接触系统的抖断是电磁继电器在振动环境条件下的主要失效模式,通过建立接触系统的非线性振动特性分析数学模型,进而应用多尺度法求解得到了各阶弯曲模态对应的频响关系,确定了系统所具有的软弹簧特性,并由此分析了激振力、触头初压力、触头曲率半径以及触头质量等参数对于振动特性的影响规律。所得结论对于提高电磁继电器的耐力学环境能力具有一定的理论意义与实用价值。The mathematic model of contact system’s nonlinear vibration characteristics was built and the frequency-amplitude property of each order bending mode was solved by using multiple scales method. Then the softening spring behavior of contact system was determined. The effects of exciting force, initial contact force and contact mass parameters on vibration characteristics were investigated. The results are of theoretical and practical value for upgrading mechanical environment resistance of electromagnetic relay.

关 键 词：电磁继电器 非线性振动 多尺度法 HERTZ接触 触头 

分 类 号：TM581[电气工程—电器] O32[理学—一般力学与力学基础]