Publication

Fault accommodation controller under Markovian jump linear systems with asynchronous modes

Carvalho, L. P., Rosa, T. E., Jayawardhana, B. & Costa, O. L. V., 30-Sep-2020, In : International Journal of Robust and Nonlinear Control. 18, p. 8503-8520 18 p.

Research output: Contribution to journalArticleAcademicpeer-review

We tackle the fault accommodation control (FAC) in the Markovian jump linear system (MJLS) framework for the discrete-time domain, under the assumption that it is not possible to access the Markov chain mode. This premise brings some challenges since the controllers are no longer allowed to depend on the Markov chain, meaning that there is an asynchronism between the system and the controller modes. To tackle this issue, a hidden Markov chain ((Formula presented.), (Formula presented.)) is used where θ(k) denotes the Markov chain mode, and (Formula presented.) denotes the estimated mode. The main novelty of this work is the design of H and H2 FAC under the MJLS framework considering partial observation of the Markov chain. Both designs are obtained via bilinear matrix inequalities optimization problems, which are solved using coordinate descent algorithm. As secondary results, we present simulations using a two-degree of freedom serial flexible joint robot to illustrate the viability of the proposed approach.

Original languageEnglish
Pages (from-to)8503-8520
Number of pages18
JournalInternational Journal of Robust and Nonlinear Control
Issue number18
Early online date30-Sep-2020
Publication statusE-pub ahead of print - 30-Sep-2020

    Keywords

  • fault-tolerant control, robust linear matrix inequalities, stochastic control

ID: 135987590