A performance optimization algorithm for controller reconfiguration in fault tolerant distributed model predictive control

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Abstract

This paper presents a performance optimization algorithm for controller reconfiguration in fault tolerant distributed model predictive control for large-scale systems. After the fault has been detected and diagnosed, several controller reconfigurations are proposed as candidate corrective actions for fault compensation. The solution of a set of constrained optimization problems with different actuator and setpoint reconfigurations is derived by means of an original approach, exploiting the information on the active constraints in the non-faulty subsystems. Thus, the global optimization problem is split into two optimization subproblems, which enables the on-line computational burden to be greatly reduced. ubsequently, the performances of different candidate controller reconfigurations are compared, and the better performing one is selected and then implemented to compensate the fault effects. Efficacy of the proposed approach has been shown by applying it to the benzene alkylation process, which is a benchmark process in distributed model predictive control.

Details

Original languageEnglish
Pages (from-to)56-69
JournalJournal of Process Control
Volume34
Issue numberOctober 2015
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

    Research areas

  • distributed model predictive control, fault tolerant control, controller reconfiguration, constrained optimization, alkylation of benzene

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