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Scheduling of Event-Triggered Controllers on a Shared Network

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Author

Summary, in English

We consider a system where a number of independent, time-triggered or event-triggered control loops are closed over a shared communication network. Each plant is described by a first-order linear stochastic system. In the event-triggered case, a sensor at each plant frequently samples the output but attempts to communicate only when the magnitude of the output is above a threshold. Once access to the network has been gained, the network is busy for T seconds (corresponding to the communication delay from sensor to actuator), after which the control action is applied to the plant. Using numerical methods, we compute the minimum-variance control performance under various common MAC-protocols, including TDMA, FDMA, and CSMA (with random, dynamic-priority, or static-priority access). The results show that event-triggered control under CSMA gives the best performance throughout.

Publishing year

2008

Language

English

Document type

Conference paper

Topic

  • Control Engineering

Conference name

47th IEEE Conference on Decision and Control, 2008

Conference date

2008-12-09 - 2008-12-11

Conference place

Cancun, Mexico

Status

Published

Research group

  • LCCC