两同频交变信号相位差测量的新方法

<etitle><Title>A New Method for Measuring the Phase Difference between two Alternating Signals with the Same Frequency<eauthor><Author>LI Jian fang 1 ZHANG Feng sheng 2 (1.Dept.of Electronic and Electrical Engineering of Sichuan University of Scien

作者提出了一种新的微机辅助数字测相法———“二次细分法” ,其特征是 :除两比相信号外 ,还需要两种辅助测量信号。该方法具有很好的动态特性 ,可大幅度减小两比相信号的频率波动对测量精度的影响 ,并具有测量精度高、灵敏度高、频响宽、抗干扰能力强等一系列优点。

A new computer-aided digital method for measuring phase-difference is proposed in this paper.Its characteristic is that it needs two supplelementary measurement signals besides two comparing phase ones.This method has good dynamic characteristic and can greatly reduce the influence of the signal frequency fluctuation on measureing accuracy,its major advantages are as follows:high measurement accuracy,high sentitivity,wide frequency range,and good anti-interference feature.<ekeyword><