应用PVDF压电薄膜进行触头接触压力动态测试研究  

Study on dynamic measurement of contact pressure using piezoelectric PVDF film

作　　者：李俊峰[1,2] 郑新芳[2] 苏秀苹[1] 李胜利[1] 

机构地区：[1]河北工业大学电磁场与电器可靠性省部共建重点实验室,天津300130 [2]邯郸学院机电学院,河北邯郸056005

出　　处：《河北工业大学学报》2014年第4期7-10,共4页Journal of Hebei University of Technology

基　　金：国家自然科学基金(50577015);浙江省低压电气产业技术创新战略联盟分项目(2010LM104-07);邯郸市自然科学基金(321102122)

摘　　要：触头压力是重要的触头参数,为了深入研究触头接触瞬间触头接触压力同接触电阻、振动等其他参数之间的关系,必须得到其动态全过程.该文利用压电薄膜传感器响应快、超薄、测量范围大的特点,设计、制作了交流接触器触头接触压力传感器,搭建了交流接触器触头接触压力动态测试系统.在实验室以CJ20-25型交流接触器为例进行了触头接触压力的动态测试.结果表明,该测试方法能够清晰、准确的获得触头接触压力的动态信号,所得电压波形能够反映触头接触压力的动态变化趋势,以及不同合闸相角下触头接触压力峰值的变化情况和触头弹跳的情况.这种测量方法简单方便且成本较低,可以直接应用到实际的工业流水生产线中.Contact pressure is an important contact parameter, but the patents and early testing technologies are aiming at the testing of static initial and final pressure, which is not enough for the study of the dynamic behavior of contact pres- sure on contacts. This dissertation introduces the basic structures, function and features of Contact Pressure sensor using Polyvinylidene fluoride （PVDF） piezoelectric films with a fast dynamic response, and builds AC Contactor Contact Pressure dynamic Testing System. A distinct dynamic behavior of contact pressure was got from a dynamic testing on CJ20-25 in this paper. The voltage waveform reflects the dynamic variation trend of the contacts contact pressure. It also indicates the peak changes of the contact pressure and contact bounce under different close phase angle. This measurernent method is simple, convenient and the cost is low, which can also be transplanted to the reality of current production.

关 键 词：接触压力 交流接触器 PVDF 压电薄膜 动态测试 

分 类 号：F273.1[经济管理—企业管理]