数字交流电桥快速平衡的理论  

Fast Balancing Theory of Digital AC Bridge

作　　者：张建秋[1] 孙金玮[1] 赵新民[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《计量学报》1997年第1期57-62,共6页Acta Metrologica Sinica

基　　金：国家自然科学基金

摘　　要：本文为数字交流电桥提供了大范围快速平衡的理论。论证表明，通过对电桥的可调参数任意调节两次，由两次调节所形成的误差电压的傅里叶系数即可完全确定电桥平衡的参数，得到被测阻抗Ｚｘ的值。该理论非常便于数字化方法实现。A fast and wide range balancing theory of the digital AC bridge is proposed in this paper.It has shown that the balancing parameters in AC bridge can be obtained by means of the Fourier coefficients of the error voltage,which is produced by arbitrarily adjusting the bridge two times,i.e.one can obtain the value of measured impedance Z x.The proposed theory is very easy to be implemented in digital way and can be applied to direct how to speed up balancing the digital AC bridge.

关 键 词：电桥 数字交流电桥 交流电桥 快速平衡理论 

分 类 号：TM938.4[电气工程—电力电子与电力传动]