<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>This paper presents a concept of designing fault tolerant control systems with the use of suboptimal methods. We assume that a given (nonlinear) dynamical process is described in a state space. The method consists in searching (at the off-line stage) for a trajectory of operational points of the system state space. The sought trajectory can be constrained by certain conditions, which can express faults or failures already detected. Within this approach, we are able to use the autonomous dynamics of the process in order to minimize a control cost index (a sub-optimality property). The search itself is based on finding a cheapest path in a graph structure, which represents the system's dynamics described in the state space. Such a cheapest path (if it exists) represents the sought trajectory. Another (on-line) design stage consists in tracking this trajectory by an executive controller.</p></abstract>

This paper presents a concept of designing fault tolerant control systems with the use of suboptimal methods. We assume that a given (nonlinear) dynamical process is described in a state space. The method consists in searching (at the off-line stage) for a trajectory of operational points of the system state space. The sought trajectory can be constrained by certain conditions, which can express faults or failures already detected. Within this approach, we are able to use the autonomous dynamics of the process in order to minimize a control cost index (a sub-optimality property). The search itself is based on finding a cheapest path in a graph structure, which represents the system's dynamics described in the state space. Such a cheapest path (if it exists) represents the sought trajectory. Another (on-line) design stage consists in tracking this trajectory by an executive controller.

Suboptimal Fault Tolerant Control Design with the Use of Discrete Optimization

Department of Decision Systems, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

International Journal of Applied Mathematics and Computer Science

{"article-title":"Suboptimal Fault Tolerant Control Design with the Use of Discrete Optimization"}

This paper presents a concept of designing fault tolerant control systems with the use of suboptimal methods. We assume that a given (nonlinear) dynamical...

Suboptimal Fault Tolerant Control Design with the Use of Discrete Optimization

Publié en ligne: 30 déc. 2008

Pages: 561 - 568

DOI: https://doi.org/10.2478/v10006-008-0049-0

Mots clés
optimal control, fault tolerant systems, nonlinear models, operations research, discrete optimization

This content is open access.

Suboptimal Fault Tolerant Control Design with the Use of Discrete Optimization

Publié en ligne: 30 déc. 2008

Pages: 561 - 568

DOI: https://doi.org/10.2478/v10006-008-0049-0

Mots clésoptimal control, fault tolerant systems, nonlinear models, operations research, discrete optimization

This content is open access.

Mots clés
optimal control, fault tolerant systems, nonlinear models, operations research, discrete optimization