Earticle

초록

영어

This paper is focused on the method of ultra-high precision frequency measurement.Based on comparing the phase characteristic of standard frequency and measured frequency, it proposes the relationship between group phase-shift and quantitative phase-shift resolution when existing frequency drift. The relationship among measurement accuracy, trigger pulse position and the pulse number is set up when the measurement gate is formed according to the group period.Through the programmable counters, the pulses of triggering gate are reduced. The application of nonlinear circuit compresses and expandes trigger pulse, which improves the accuracy of triggering gate. Frequency measurement system was designed using FPGA.Experiments showed that measurement accuracy can reach 10-12 . The system can be used for ultra-high precision measurement of frequency .

목차

Abstract
 1. Introduction
 2. Phase Comparasion between Standard Frequency and Measured Frequency
 3. The Acquisition of High Precision Gate and the Composition of the Measurement System
 4. Experimental Results
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Wang Xuanmin [ School of Information Engineering, Chang’an University,Xi’an, 710064, China ]
• Huang Lijun [ School of Information Engineering, Chang’an University,Xi’an, 710064, China ]
• Qu Bayi [ School of Information Engineering, Chang’an University,Xi’an, 710064, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605