惠斯登电桥的灵敏度及换臂测量的数据处理  

The Sensitivity of Wheatstone-Bridge and the Data Processing while Exchanging the Bridge Arm Resistance

作　　者：任惠娟[1] 姚展[1] 

机构地区：[1]咸阳师范学院物理与电子工程学院,陕西咸阳712000

出　　处：《咸阳师范学院学报》2010年第2期25-27,共3页Journal of Xianyang Normal University

基　　金：咸阳师范学院科研基金项目(07XSYK278)

摘　　要：对电桥灵敏度及自组惠斯登电桥换臂测量的数据处理进行了探讨。指出换臂前后电桥的灵敏度发生了变化,换臂前后两个测量结果的可置信度不同,两次测量结果应被认定为非等精度测量值,其合成方法应遵循非等精度测量值合成法则。The conception of electric bridge sensitivity and the data processing method in the Wheatstone-Bridge experiment are introduced in this paper.It is pointed that the electric bridge sensitivity changes when exchanging the bridge arm resistance.The two measure results from exchang-ing the arm resistance have different confidence,and they should be identified with the unequal precision measurement values.The synthesizing method should follow the unequal precision measurement values principle.

关 键 词：电桥灵敏度 不确定度 非等精度测量值 

分 类 号：O441.1[理学—电磁学]