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首页> 外文会议>International Conference on Reliability of Electrical Products and Electrical Contacts(ICREPEC 2004); 20040828-31; Suzhou(CN) >Research on Contact Displacement Response of Switching Electrical Apparatus in the Condition of Vibration
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Research on Contact Displacement Response of Switching Electrical Apparatus in the Condition of Vibration

机译：振动条件下开关电器的接触位移响应研究

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摘要

Spring systems are the execution parts of switching electrical apparatus, whose contacts breaking and closing in operation time make the process of electrical contacts more complex. The contact displacement response will directly influence electrical contact process in mechanical vibration. Therefore affect the contact reliability of switching electrical apparatus. This paper built up the equivalent mathematic model of spring systems by introducing local contact rigidity and using Hertz theory, then the non-linear contact system was equivalent to two-degree-freedom system in harmonic analysis, the reasonable criterion of spring systems keeping mechanical contact status was presented. To this end, displacement response of some type electromagnetic relay was simulated with variable size parameters and contact position. Simulation results confirmed the validity and efficiency of the proposed modal and relevant theory analysis. The conclusions are instructive for increasing vibration resistance of switching electrical apparatus with breaking and closing contacts.
机译：弹簧系统是开关电气设备的执行部件，其触头在工作时间内断开和闭合使电触头的过程更加复杂。接触位移响应将直接影响机械振动中的电接触过程。因此影响开关电器的接触可靠性。通过引入局部接触刚度，并利用Hertz理论建立了弹簧系统的等效数学模型，非线性接触系统在谐波分析中等效于两自由度系统，是弹簧系统保持机械接触的合理准则。状态被提出。为此，模拟了具有可变尺寸参数和接触位置的某种类型电磁继电器的位移响应。仿真结果证实了所提出的模态和相关理论分析的有效性和有效性。这些结论对于增加带有断开和闭合触点的开关电气设备的抗振性具有指导意义。

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