桥式复合比率网络的研究  

The Study of Bridge\|type Compound Ratio Network

作　　者：张功铭[1] 赵复真[1] 

机构地区：[1]中国计量科学研究院,北京100013

出　　处：《仪器仪表学报》2000年第3期258-262,共5页Chinese Journal of Scientific Instrument

摘　　要：本文对桥式复合比率网络的有关问题进行讨论 :( 1)同序复合比率网络与异序复合比率网络的等同性 ;( 2 )等轴双曲线函数电桥的新结构和应用 ;( 3 )全息比率网络的电路分析与实用意义。There are three research conclusions in Bridged Compound Ratio Network in this paper. (1)A deduction of the theory of the Compound Ratio Network is given. The “In phase Compound Ratio Network” is equivalent to the “Out of phase Compound Ratio Network”. (2)A special ratio bridge with the balance equation of Z xZ s=Z 2 is offered. This bridge is designed according to the deduction of Compound Ratio Network and named after “Equilateral Hyperbolic Function Bridge”. The merits of this bridge as follows: the balance equation of bridge is R xR s=R 2,the characteristic relation is R in =R out =R (R is the constant resistance in the ratio device). In this bridge has the ratio of current I s/I x=(R s+R)/(R x+R), the ratio of voltage U x/U s=(R x+R)/(R s+R) and the ratio of power P x=P s=U 2/(R x+R+R s+R). A model of Equilateral Hyperbolic Function Bridge was constructed for high value resistance measurement up to 10 12 ohm with the accuracy of 0.1%. (3)A special ratio network which can be given the complete ratios of current, voltage and power at same time in the same ratio network is offered and it is named for “Holographic Ratio Network”. A model of Holographic Ratio Network was established. It possesses the fundamental function R xR s=R 2 and the characteristic relation R in =R out =R L (R L is the load resistance of network). The ratio of current, voltage and power in the Holographic Ratio Network has following characteristic relation: (HCR)=(HVR)=(HPR) 12 , in which HCR, HVR and HPR is the ratio of current, voltage and power of the Holographic Ratio Network respectively. Based on this relation an ideal attenuator can be designed according to the following equation: A=20 Log(HCR)=20 Log(HVR)=10 Log(HPR). Experiments on models are full proof the theory of Holographic Ratio Network is valid.

关 键 词：桥式复合比率网络 全息比率网络 

分 类 号：TM711[电气工程—电力系统及自动化] TM13