Electrical and Electronic Engineering - Research Publications

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Author: Dower, Peter × Author: Nesic, Dragan × Author: Postoyan, Romain ×

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    Emulation-based stabilisation of networked control systems over WirelessHART
    Maass, AI ; Nesic, D ; Postoyan, R ; Dower, PM ; S Varma, V (IEEE Press, 2017)
    We study the emulation-based stabilisation of nonlinear networked control systems (NCSs) implemented over WirelessHART (WH). WH is a communication protocol widely used in process instrumentation. It is characterised by its multi-hop structure, slotted communication cycles, and simultaneous transmission over different frequencies. To capture most functionalities of WH, faithful models are needed. We propose a hybrid control-oriented model of WH-NCSs that includes the key features of the network. We then follow an emulation approach to stabilise the NCS. We show that, under reasonable assumptions on the scheduling protocol, stability is preserved when the controller is implemented over the network with sufficiently frequent data transmission. We then explain how to schedule transmissions over the hops to satisfy those assumptions.