Two-level design for aperiodic networked control systems
| Autor: | Magdi S. Mahmoud, MagdiSadek Mahmoud, Azhar Memon |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Engineering computer.internet_protocol business.industry Distributed computing ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS 020208 electrical & electronic engineering 02 engineering and technology Energy consumption 020901 industrial engineering & automation Transmission (telecommunications) Control and Systems Engineering Control theory Duty cycle Control system Signal Processing 0202 electrical engineering electronic engineering information engineering Wireless Application Protocol Wireless Computer Vision and Pattern Recognition Electrical and Electronic Engineering business computer Software Efficient energy use |
| Zdroj: | Signal Processing. 120:43-55 |
| ISSN: | 0165-1684 |
| Popis: | Two critical issues in networked control systems are coupling of control and communication, and energy economy, especially for battery powered wireless sensor nodes. In this regard, a two-level design procedure for multiple loops with H ∞ based self-triggered control applied over the modified IEEE 802.15.4 wireless protocol is presented. Control and communication are decoupled by introducing an upper-bound on the transmission rate, and optimal usage of communication bandwidth and energy is guaranteed by modifying the wireless protocol. The presented priority-based scheduling algorithm can accommodate more systems as compared with the number of available transmission slots, while being efficient in terms of computational load and energy consumption. Simulation results show a significant reduction in energy expenditure in terms of decrease in duty cycle as compared with the periodic implementation. HighlightsSelf-triggered H ∞ controller with modified IEEE 802.15.4 protocol is presented.Predicted nature of triggering time is used to improve energy efficiency of the protocol.Collisions and congestion are avoided in the network due to self-triggering.Modified protocol can accommodate more systems than maximum allowed transmission slots.Results indicate improvement in energy economy as compared with the periodic setting. |
| Databáze: | OpenAIRE |
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