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本文论述了关于惠斯登电桥的精确度、灵敏度、检零仪表、电源等问题。定义了电桥的灵敏度函数,确定了最佳灵敏度区间,讨论了灵敏度和精确度之间的关系,指出了为确保一定灵敏度和精确度应如何正确地选择电源和指零仪表等问题;给出了理论根据和具有典型参数的灵敏度曲线族以及电子计算机计算的数据结果。
This article discusses issues with the accuracy, sensitivity, zero-gage instrumentation, and power supplies of a Wheatstone bridge. The sensitivity function of the bridge is defined, the optimal sensitivity interval is determined, the relationship between sensitivity and accuracy is discussed, and the problems of how to select the power supply and the zero gauge correctly are pointed out to ensure a certain sensitivity and accuracy. The theoretical basis and the sensitivity curve family with typical parameters and the data calculated by the computer are shown.