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Decentralized model predictive control of dynamically coupled linear systems

Alessio, Alessandro and Barcelli, Davide and Bemporad, Alberto Decentralized model predictive control of dynamically coupled linear systems. Journal of Process Control, 21 (5). 705 - 714. ISSN 0959-1524 (2011)

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This paper proposes a decentralized model predictive control (DMPC) scheme for large-scale dynamical processes subject to input constraints. The global model of the process is approximated as the decomposition of several (possibly overlapping) smaller models used for local predictions. The degree of decoupling among submodels represents a tuning knob of the approach: the less coupled are the submodels, the lighter the computational burden and the load for transmission of shared information; but the smaller is the degree of cooperativeness of the decentralized controllers and the overall performance of the control system. Sufficient criteria for analyzing asymptotic closed-loop stability are provided for input constrained open-loop asymptotically stable systems and for unconstrained open-loop unstable systems, under possible intermittent lack of communication of measurement data between controllers. The DMPC approach is also extended to asymptotic tracking of output set-points and rejection of constant measured disturbances. The effectiveness of the approach is shown on a relatively large-scale simulation example on decentralized temperature control based on wireless sensor feedback.

Item Type: Article
Identification Number: 10.1016/j.jprocont.2010.11.003
Additional Information: Special Issue on Hierarchical and Distributed Model Predictive Control
Uncontrolled Keywords: Model predictive control; Decentralized control; Multi-layer control; Networked control; Packet loss
Subjects: Q Science > QA Mathematics
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TJ Mechanical engineering and machinery
Research Area: Computer Science and Applications
Depositing User: Professor Alberto Bemporad
Date Deposited: 27 Jul 2011 12:51
Last Modified: 05 Aug 2011 11:12
URI: http://eprints.imtlucca.it/id/eprint/725

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