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High Precision Clock Bias Prediction Model in Clock Synchronization System
Joint Authors
Chen, Xihong
Liu, Zan
Liu, Jin
Li, Chenglong
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-11-20
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Time synchronization is a fundamental requirement for many services provided by a distributed system.
Clock calibration through the time signal is the usual way to realize the synchronization among the clocks used in the distributed system.
The interference to time signal transmission or equipment failures may bring about failure to synchronize the time.
To solve this problem, a clock bias prediction module is paralleled in the clock calibration system.
And for improving the precision of clock bias prediction, the first-order grey model with one variable (GM(1,1)) model is proposed.
In the traditional GM(1,1) model, the combination of parameters determined by least squares criterion is not optimal; therefore, the particle swarm optimization (PSO) is used to optimize GM(1,1) model.
At the same time, in order to avoid PSO getting stuck at local optimization and improve its efficiency, the mechanisms that double subgroups and nonlinear decreasing inertia weight are proposed.
In order to test the precision of the improved model, we design clock calibration experiments, where time signal is transferred via radio and wired channel, respectively.
The improved model is built on the basis of clock bias acquired in the experiments.
The results show that the improved model is superior to other models both in precision and in stability.
The precision of improved model increased by 66.4%~76.7%.
American Psychological Association (APA)
Liu, Zan& Chen, Xihong& Liu, Jin& Li, Chenglong. 2016. High Precision Clock Bias Prediction Model in Clock Synchronization System. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-6.
https://search.emarefa.net/detail/BIM-1111797
Modern Language Association (MLA)
Liu, Zan…[et al.]. High Precision Clock Bias Prediction Model in Clock Synchronization System. Mathematical Problems in Engineering No. 2016 (2016), pp.1-6.
https://search.emarefa.net/detail/BIM-1111797
American Medical Association (AMA)
Liu, Zan& Chen, Xihong& Liu, Jin& Li, Chenglong. High Precision Clock Bias Prediction Model in Clock Synchronization System. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-6.
https://search.emarefa.net/detail/BIM-1111797
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1111797