Suboptimal fault tolerant control design with the use of discrete optimization

• Autorzy: Zdzisław Kowalczuk , Krzysztof E. Oliński
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

optimal control; fault tolerant systems; nonlinear models; operations research; discrete optimization

• Wydawca: University of Zielona Gora Press
• Czasopismo: International Journal of Applied Mathematics and Computer Science
• Rocznik: 2008
• Tom: 18
• Numer: 4
• Strony: 561-568

Daty

wydano

2008

otrzymano

2007-12-18

poprawiono

2008-03-12

Twórcy

autor

Zdzisław Kowalczuk

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

autor

Krzysztof E. Oliński

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

Bibliografia

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• Kowalczuk Z. and Olinski K. E. (2007). Sub-optimal faulttolerant control with the use of discrete optimization, in J. Korbicz, K. Patan and M. Kowal (Eds.), Fault Diagnosis and Fault Tolerant Control, Academic Publishing House EXIT, Warsaw, pp. 165-172.
• Kowalczuk Z., Rudzinska-Kormanska K. and Olinski K. E. (2007). Designing nonlinear control systems by statespace flow graph optimization, Proceedings of the 11th IFAC Symposium on Large Scale Systems, Gdańsk, Poland, pp. 1-4, (on CD-ROM).
• Kowalczuk Z. and Suchomski P. (2005). Discrete-time predictive control design based on overparameterized delayplant models and identified cancellation order, International Journal of Applied Mathematics and Computer Science 15(1): 5-34.
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• Zhang Y. (2007). Active fault-tolerant control systems: Integration of fault diagnosis and reconfigurable control, in J. Korbicz, K. Patan and M. Kowal (Eds.), Fault Diagnosis and Fault Tolerant Control, Academic Publishing House EXIT, Warsaw, pp. 21-41.

Identyfikatory

DOI

10.2478/v10006-008-0049-0