<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>This paper proposes a novel approach to reliability evaluation for active Fault Tolerant Control Systems (FTCSs). By introducing a reliability index based on the control performance and hard deadline, a semi-Markov process model is proposed to describe system operation for reliability evaluation. The degraded performance of FTCSs in the presence of imperfect Fault Detection and Isolation (FDI) is reflected by semi-Markov states. The semi-Markov kernel, the key parameter of the process, is determined by four probabilistic parameters based on the Markovian model of FTCSs. Computed from the transition probabilities of the semi-Markov process, the reliability index incorporates control objectives, hard deadline, and the effects of imperfect FDI, a suitable quantitative measure of the overall performance.</p></abstract>

This paper proposes a novel approach to reliability evaluation for active Fault Tolerant Control Systems (FTCSs). By introducing a reliability index based on the control performance and hard deadline, a semi-Markov process model is proposed to describe system operation for reliability evaluation. The degraded performance of FTCSs in the presence of imperfect Fault Detection and Isolation (FDI) is reflected by semi-Markov states. The semi-Markov kernel, the key parameter of the process, is determined by four probabilistic parameters based on the Markovian model of FTCSs. Computed from the transition probabilities of the semi-Markov process, the reliability index incorporates control objectives, hard deadline, and the effects of imperfect FDI, a suitable quantitative measure of the overall performance.

Reliability Modeling of Fault Tolerant Control Systems

Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2V4

Department of Computer Science and Engineering, Aalborg University Esbjerg, Niels Bohrs Vej 8, 6700 Esbjerg, Denmark

International Journal of Applied Mathematics and Computer Science

{"article-title":"Reliability Modeling of Fault Tolerant Control Systems"}

This paper proposes a novel approach to reliability evaluation for active Fault Tolerant Control Systems (FTCSs). By introducing a reliability index based on...

Reliability Modeling of Fault Tolerant Control Systems

Publié en ligne: 07 janv. 2008

Pages: 491 - 504

DOI: https://doi.org/10.2478/v10006-007-0041-0

Mots clés
fault tolerant control, reliability evaluation, semi-Markov processes

This content is open access.

Reliability Modeling of Fault Tolerant Control Systems

Publié en ligne: 07 janv. 2008

Pages: 491 - 504

DOI: https://doi.org/10.2478/v10006-007-0041-0

Mots clésfault tolerant control, reliability evaluation, semi-Markov processes

This content is open access.

Mots clés
fault tolerant control, reliability evaluation, semi-Markov processes