Co-design of H∞ jump observers for event-based measurements over networks
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Altres documents de l'autoria: Peñarrocha-Alós, Ignacio; Dolz Algaba, Daniel; Romero Pérez, Julio Ariel; Sanchis LLopis, Roberto
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Títol
Co-design of H∞ jump observers for event-based measurements over networksAutoria
Data de publicació
2015-07-27xmlui.dri2xhtml.METS-1.0.item-edition
PostprintEditor
Taylor & FrancisCita bibliogràfica
PEÑARROCHA, Ignacio, et al. Co-design of H∞ jump observers for event-based measurements over networks. International Journal of Systems Science, 2016, vol. 47, no 2, p. 283-299.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.tandfonline.com/doi/abs/10.1080/00207721.2015.1068881Paraules clau / Matèries
Resum
This work presents a strategy to minimise the network usage and the energy consumption of wireless battery-powered sensors in the observer problem over networks. The sensor nodes implement a periodic send-on-delta ... [+]
This work presents a strategy to minimise the network usage and the energy consumption of wireless battery-powered sensors in the observer problem over networks. The sensor nodes implement a periodic send-on-delta approach, sending new measurements when a measure deviates considerably from the previous sent one. The estimator node implements a jump observer whose gains are computed offline and depend on the combination of available new measurements. We bound the estimator performance as a function of the sending policies and then state the design procedure of the observer under fixed sending thresholds as a semidefinite programming problem. We address this problem first in a deterministic way and, to reduce conservativeness, in a stochastic one after obtaining bounds on the probabilities of having new measurements and applying robust optimisation problem over the possible probabilities using sum of squares decomposition. We relate the network usage with the sending thresholds and propose an iterative procedure for the design of those thresholds, minimising the network usage while guaranteeing a prescribed estimation performance. Simulation results and experimental analysis show the validity of the proposal and the reduction of network resources that can be achieved with the stochastic approach. [-]
Publicat a
International Journal of Systems Science, 2016, vol. 47, no 2Drets d'accés
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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