Precision measurement of phase difference for signals at same frequency
Deng Zu-pu · Jisuanji yingyong yanjiu · 2009
This paper discussed different methods used for measurement of phase difference.Measuring the time difference of zero passage was widely used.Analyzed several disadvantages to it,and brought forward some strategies.For high frequency application,introduced the characteristic of phase discriminators.Great computational effort should be avoid for real-time control application in the micro-controller system.Introduced linear interpolation method for precision measurement and discussed practical method and tolerance separately.