交流电桥磁通改变法测相对位移实验

Experiment on Measurement of Relative Displacement of Alternating Current Bridge with Magnetic Flux Changing Method

探讨了交流电桥磁通改变法测相对位移的原理和参数选择方法,给出了实验的一般步骤,并对元件参数选择作了相应的探究.根据实验的灵敏度要求,从理论上推导了灵敏度极大值条件,并且通过实验进行了验证.从实验理论的讨论中可以发现,该实验是一个比较好的综合性实验,它把电磁测量与力学量测量联系起来,是采用转换法测量的较好的实例.

This paper discusses the principle and parameter selecting method of using alternating current magnetic flux changing method to measure relative replacement, presents general procedure for experiment, and conducts corresponding analysis on the parameter selection of components. According to the requirements of experiment for sensitivity, this paper makes a deduction for the condition for maximum value of sensitivity and verifies it by experiment. It can be found in the discussions of experiment theories that this experiment is a relatively good comprehensive experiment, which connects electromagnetic measurement and mechanical measurement, and proves to be good case for transforming measurement..