Cart (Loading....) | Create Account
Close category search window
 

A New Time Synchronization Method for Reducing Quantization Error Accumulation Over Real-Time Networks: Theory and Experiments

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Xiong Xu ; State Key Lab. of Mech. Syst. & Vibration, Shanghai Jiao Tong Univ., Shanghai, China ; Zhenhua Xiong ; Xinjun Sheng ; Jianhua Wu
more authors

In real-time network-based systems with long linear paths, the growth rate of time synchronization error is the major barrier to the scalability of systems even if a transparent clock mechanism of IEEE 1588 is used. This paper is devoted to designing a new time synchronization method for such systems. In the proposed algorithm, a proportional-integral (PI) clock servo is used to achieve the frequency compensation. In order to reduce the growth rate of synchronization error due to the quantization error in timestamping, a Kalman filter is designed based on a state-variable model, which is built for the PI controller-tuned slave clock. In addition, the quantization effect is analyzed and the variance of quantization error is quantitatively estimated for each slave node. Experiments are performed to validate its effectiveness and demonstrate that the peak-to-peak jitter is measured to be only 59.37 ns after four hops, and the growth rate of synchronization error can also be significantly reduced by the presented synchronization method. This indicates that the maximum number of networked nodes can be correspondingly increased.

Published in:

Industrial Informatics, IEEE Transactions on  (Volume:9 ,  Issue: 3 )

Date of Publication:

Aug. 2013

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.