A proportional integral estimator-based clock synchronization protocol for wireless sensor networks

被引：10

作者：

Yang, Wenlun ^{[1
,2
]}

Fu, Minyue ^{[1
,2
,3
]}

机构：

[1] Zhejiang Univ, Coll Control Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, State Key Lab Ind Control Technol, Hangzhou 310027, Zhejiang, Peoples R China

[3] Univ Newcastle, Sch Elect Engn & Comp Sci, Callaghan, NSW 2308, Australia

来源：

ISA TRANSACTIONS | 2017年 / 71卷

关键词：

Wireless sensor networks; Clock synchronization; Proportional-integral estimator; CONSENSUS; ALGORITHM; OFFSET; SKEW;

D O I：

10.1016/j.isatra.2017.03.025

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Clock synchronization is an issue of vital importance in applications of WSNs. This paper proposes a proportional integral estimator-based protocol (EBP) to achieve clock synchronization for wireless sensor networks. As each local clock skew gradually drifts, synchronization accuracy will decline over time. Compared with existing consensus-based approaches, the proposed synchronization protocol improves synchronization accuracy under time-varying clock skews. Moreover, by restricting synchronization error of clock skew into a relative small quantity, it could reduce periodic re-synchronization frequencies. At last, a pseudo-synchronous implementation for skew compensation is introduced as synchronous protocol is unrealistic in practice. Numerical simulations are shown to illustrate the performance of the proposed protocol. (C) 2017 ISA. Published by Elsevier Ltd. All rights reserved.

引用

页码：148 / 160

页数：13

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