Event-triggering control for model-based networked control systems under communication constraints

Abstract

We consider the stability of networked control systems (NCSs) with communication constraint. To economize in communication resource, people hope the system could run in open loop mode for as long as possible. We use a model-based (MB) architecture, which contains a model to estimate the plant state; the estimate is used to calculate the control signal in place of the plant state. The plant-controller communication occurs only at discrete instants, which are to be determined by the event-triggering style. Under the bandwidth constraint, only one node of a system is chosen to transmit its information while other nodes must wait. We use a popular scheduling protocol called Maximum-Error-First (MEF) protocol to pick the node. We give conditions to guarantee the asymptotical stability of the NCSs.