摘要
总结接触电阻的测试方法,讨论了产生测量不确定度的因素,对四线法测量原理和消除热电势的方法进行了论述。提出了接触电阻的间接测量法,给出了间接测量法的计算公式,该方法可以用于测试电气回路中的接触电阻,并可以应用在环路电阻标准器的计量校准中。
The contact resistance was often applied in quality testing of switches, relays and PCB pads and testing of the shield assembly for EMC. The method of measuring contact resistance has been summed up and the factors that induce measurement uncertainty have been discussed. A new method of indirect measuring contact resistance has been put forward in this paper creatively, and the indirect calculation formula has been given out. This method can be used in measuring contact resistance that includes in loop circuit. This method can also been appliced on calibration loop resistor standard.
出处
《宇航计测技术》
CSCD
2005年第3期22-25,31,共5页
Journal of Astronautic Metrology and Measurement
关键词
接触电阻
环路电阻
^+四线法测量
机械装配
Contact resistance Loop resistance +Four-wire terminal Machine assembly
