Modelling and synchronisation of delayed packet-coupled oscillators in industrial wireless sensor networks

Yan Zong, Xuewu Dai, Pep Canyelles-Pericas, Krishna Busawon, Richard Binns, Zhiwei Gao

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)
17 Downloads (Pure)


In this paper, a Packet-Coupled Oscillators (PkCOs) synchronisation protocol is proposed for time-sensitive Wireless Sensor Networks (WSNs) based on Pulse-Coupled Oscillators (PCO) in mathematical biology. The effects of delays on synchronisation performance are studied through mathematical modelling and analysis of packet exchange and processing delays. The delay compensation strategy (i.e., feedforward control) is utilised to cancel delays effectively. A simple scheduling function is provided with PkCOs to allocate the packet transmission event to a specified time slot, by configuring reference input of the system to a non-zero value, in order to minimise the possibility of packet collision in synchronised wireless networks. The rigorous theoretical proofs are provided to validate the convergence and stability of the proposed synchronisation scheme. Finally, the simulations and experiments examine the effectiveness of PkCOs with delay compensation and scheduling strategies. The experimental results also show that the proposed PkCOs algorithm can achieve synchronisation with the precision of 26.3µs (1 tick).

Original languageEnglish
Pages (from-to)8283-8289
Number of pages7
Issue number2
Publication statusPublished - 1 Jan 2020
Event21st IFAC World Congress 2020 - Berlin, Germany
Duration: 12 Jul 202017 Jul 2020


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