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Co-design strategy of networked control systems for treacherous network conditions

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3 Author(s)
Guinaldo, M. ; Dept. of Comput. Sci. & Autom. Control, Spanish Univ. of Distance Educ. (UNED), Madrid, Spain ; Sánchez, J. ; Dormido, S.

This study presents a co-design strategy for networked control systems (NCS) that is effective for treacherous Internet conditions. The co-design is based on two adaptation layers, one on each side of the network, that make the scheme controller-independent. Two different designs based on anticipative control are presented for packet-based NCS. In the first (which is time-based), the controller works asynchronously, but the sensor sends the plant state periodically. The second design is event-based, as the sensor only sends packets when a certain condition is met. Stability results were derived for the time-based approach, and simulation and experimental results demonstrate the efficiency of the proposed design for very long delays and high packet-loss rates. In addition, the event-based approach showed a considerable reduction in network usage.

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Control Theory & Applications, IET  (Volume:5 ,  Issue: 16 )