Modelling and Synchronization of Pulse-Coupled Non-identical Oscillators for Wireless Sensor Networks

Zong, Yan, Dai, Xuewu, Gao, Zhiwei, Busawon, Krishna and Zhu, Jiwen (2018) Modelling and Synchronization of Pulse-Coupled Non-identical Oscillators for Wireless Sensor Networks. In: INDIN 2018 - IEEE 16th International Conference on Industrial Informatics, 18th - 20th July 2018, Porto, Portugal.

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Time synchronization in wireless sensor networks, aiming to provide a common sense of timing among distributed sensor nodes, is a key enabling technology for many applications, such as collaborative condition monitoring, time-of-flight localization and underwater navigation and tactical surveillance. In order to solve the challenges of the manufacturing tolerance and working condition variations in any real-world environments, a novel state-space model for pulse-coupled non-identical oscillators is proposed to model a realistic clock oscillator with nonidentical and time-varying frequency. A state feedback correction, referred to as hybrid coupling mechanism, is also proposed to ensure the system move into steady state, thus achieving time synchronization in wireless sensor networks. Furthermore, the intensive simulations of single-hop wireless sensor networks have been carried out to evaluate the performance of proposed pulsecoupled non-identical oscillators. It is shown that a partially connected wireless network consisting of 50 non-identical pulsecoupled oscillators can achieve the synchronization with the precision of 40us.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: time synchronization, pulse-coupled oscillators, hybrid coupling, proportional controller, wireless sensor networks
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Yan Zong
Date Deposited: 10 Oct 2018 13:46
Last Modified: 01 Aug 2021 09:31

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