Asynchronous decentralized event-triggered control

• Published in: Automatica (Oxford) Vol. 50; no. 12; pp. 3197 - 3203
• Main Authors: Mazo, Manuel, Cao, Ming
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.12.2014; Elsevier
• Subjects: Adaptative systems; Applied sciences; Charge; Computer science; control theory; systems; Computer systems and distributed systems. User interface; Control theory. Systems; Controllers; Cyber–physical systems; Decentralized; Delay; Event-triggered control; Exact sciences and technology; Exchange; Mathematical models; Networked control systems; Proposals; Radiocommunications; Sensors; Software; Strategy; Telecommunications; Telecommunications and information theory; Wireless communications; Cyber–physical systems; Networked control systems; Wireless communications; Event-triggered control; Event management; Measurement sensor; Cyber-physical systems; Updating; Dead beat control; Transmission time; Decentralized control; Distributed control; Secondary effect; Wireless network; Triggering; Monitoring control system
• ISSN: 0005-1098; 1873-2836
• DOI: 10.1016/j.automatica.2014.10.029

In this paper we propose an approach to the implementation of controllers with decentralized strategies triggering controller updates. We consider set-ups with a central node in charge of the computation of the control commands, and a set of not co-located sensors providing measurements to the controller node. The solution we propose does not require measurements from the sensors to be synchronized in time. The sensors in our proposal provide measurements in an aperiodic way triggered by local conditions. Furthermore, in the proposed implementation (most of) the communication between nodes requires only the exchange of one bit of information (per controller update), which could aid in reducing transmission delays and as a secondary effect result in fewer transmissions being triggered.