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Two-level design for aperiodic networked control systems
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DOI：10.1016/j.sigpro.2015.08.015.png)
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Abstract
En 中文
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 Ho 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. (C) 2015 Elsevier B.V. All rights reserved.
Keywords:
H-infinity controller
Modified IEEE 802.15.4 protocol
Networked control
Priority-based scheduling (PBS)
Self-triggering
Two-level design
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