寄生电势对高温电阻检测影响的研究

Research in the Testing of High Temperature Electrical Resistance Due to Parasitic Potential

高温电阻测量通常采用直流补偿法完成,在具体操作(数据处理)中,普遍取工作电流正、反向过程中测得的电位差值的绝对值数据平均值作为测量结果简称"绝对值法"。实践证明,传统方法在寄生温差电势大的情况下,将导致错误的结果;从理论、实践两方面进行了分析,提出的"代数平均值处理法";简称"代数值法",为高温电阻检测方法的重要改进。

High temperature resistance measurement usually adopts DC compensation method.During data processing,the average absolute number of the potential difference measured from the positive and negative current is used as measuring result.It proves that the traditional method will lead to error results under the condition of big parasitic potential.Based on the analysis from both the principal and the practice,＂the average algebra data treatment method＂（algebra value method） was proposed.It is estimated that important improvement will be made on the use of the measurement method of high temperature resistance using the above method.