Encoder~Decoder Design for Event-Triggered Feedback Control over Bandlimited Channels

Bandwidth limitations and energy constraints set severe restrictions on the design of control systems that utilize wireless sensor and actuator networks. It is common in these systems that a sensor node needs not be continuously monitored, but communicates to the controller only at certain instances...

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Veröffentlicht in:2006 American Control Conference S. 4183 - 4188
Hauptverfasser: Lei Bao, Skoglund, M., Johansson, K.H.
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 2006
Schriftenreihe:Proceedings of the American Control Conference
Schlagworte:
Actuators
Automatic control
Bandwidth
Communication system control
Control systems
Costs
Event detection
Feedback control
Information technology
Informationsteknik
Monitoring
Reglerteknik
Sensor systems
TECHNOLOGY
TEKNIKVETENSKAP
Wireless sensor networks
ISBN:9781424402090, 1424402093
ISSN:0743-1619
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Beschreibung
Zusammenfassung:Bandwidth limitations and energy constraints set severe restrictions on the design of control systems that utilize wireless sensor and actuator networks. It is common in these systems that a sensor node needs not be continuously monitored, but communicates to the controller only at certain instances when it detects a disturbance event. In this paper, such a scenario is studied and particular emphasis is on efficient utilization of the shared communication resources. Encoder-decoder design for an event-based control system with the plant affected by pulse disturbances is considered. A new iterative procedure is proposed which can jointly optimize encoder-decoder pairs for a certainty equivalent controller. The goal is to minimize a design criterion, in particular, a linear quadratic cost over a finite horizon. The algorithm leads to a feasible design of time-varying non-uniform encoder-decoder pairs. Numerical results demonstrate significant improvements in performance compared to a system using uniform quantization
ISBN:9781424402090
1424402093
ISSN:0743-1619
DOI:10.1109/ACC.2006.1657375