Fault accommodation controller under Markovian jump linear systems with asynchronous modes

Author(s)

Carvalho, L. P. ^{[1, 2]} ; Rosa, T. E. ^[2] ; Jayawardhana, B. ^[2] ; Costa, O. L. V. ^[1]

Affiliation

^[1] Univ Sao Paulo, Escola Politecn, Dept Engn Telecomunicacoes & Controle, Sao Paulo, SP - Brazil

^[2] Univ Groningen, Discrete Technol & Prod Automat DTPA, Groningen - Netherlands

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL; v. 30, n. 18, p. 8503-8520, DEC 1 2020.
• Web of Science Citations: 0

Abstract

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 (theta(k),theta<\^{}>(k)) is used where theta(k)denotes the Markov chain mode, and theta<\^{}>(k)denotes the estimated mode. The main novelty of this work is the design ofScript capital H infinity andScript capital H2FAC 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. (AU)

• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program