电触点材料接触电阻高精密测量技术  

Precision Measuring Technique for Contact Resistance of Contact Materials

作　　者：任万滨[1] 武剑 陈宇[1] 曹晟[1] 崔黎 翟国富[1] 

机构地区：[1]哈尔滨工业大学军用电器研究所,哈尔滨150001 [2]北京时代之峰科技有限公司硬件开发部,北京100085 [3]桂林航天电子有限公司,桂林541002

出　　处：《电工技术学报》2014年第1期31-36,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51007010;51377029)资助项目

摘　　要：电触点材料是影响电气与电子工程中电接触可靠性的关键。本文综合应用了激励电流断续斩波技术、低噪低漂移弱信号调理技术和滑动窗口平均滤波技术,设计并实现了接触电阻的高精密测量,进而应用0.01级标准电阻和M22等级标准砝码完成了测量系统的误差分析。最后以典型平面AgCdO复合触点材料完成了不同激励电流条件下接触电阻与接触压力间滞回特性的测试与分析,实验结果确定了接触压力和激励电流对接触电阻的影响规律。Contact material is very critical for the reliability of electrical engineering and electronic engineering. A new precision measuring system and relevant testing method are presented by introducing intermittent chopping for excited current, conditioning for low noise low drift weak voltage drop signal and averaging filtering algorithm in moving window comprehensively. The error of test facility is determined by using Level 0.01 standard resistors and Level M22 standard weights accurately The hysteretic characteristics between contact resistance and contact force of AgCdO composite contact material with flat surface are measured with different excited currents. The results showed that the effect of contact force and excited current on contact resistance.

关 键 词：电接触 触点材料 接触电阻 接触压力 测量 

分 类 号：TM501[电气工程—电器]