摘要
论文分析了电学法热阻测试仪的工作原理及测量过程,明确了测量过程中各个电、热参数对热阻测试结果的作用和意义。由热阻的基本定义出发,推导出了各种电热参数与热阻之间的测量模型,选择K系数测量电流的短期稳定性,电压测量值,加热电流和加热电压,加热平台温度,参考位置温度为主要校准参数。从整体校准的角度,给出了校准方法,分析了各种影响量引入的测量不确定度,给出了最终测量不确定度评定过程。为实现电学法热阻测试仪的整体校准奠定了基础。
In this paper,the basic principles about Thermal Resistance Tester Based on transient Electrical Method were given.The calibration parameters were chosen properly,such as the stability of IM,TSP voltage,heating voltage and heating current,and the calibration method.And then,the measurement model was given and the measurement uncertainty was calculated.A great effort had been done on the calibration of the thermal resistance tester.
出处
《计算机与数字工程》
2015年第1期1-3,149,共4页
Computer & Digital Engineering
关键词
电学法
热阻测试仪
校准
测量不确定度
electrical method
thermal resistance tester
calibration
measurement uncertainty
