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A hybrid intelligent algorithm for reliability optimization problems

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2 Author(s)
Ruiqing Zhao ; Dept. of Math. Sci., Tsinghua Univ., Beijing, China ; Kaoping Song

This paper focuses on general cold standby redundancy systems with imperfect switches and the lifetime of system is modeled as a fuzzy variable. The system performance - α-system lifetime - characterized in the context of credibility is investigated. In order to estimate the system performance, a fuzzy simulation is designed. A standby redundancy fuzzy chance-constrained programming model is established to optimize this system performance under cost constraint. In order to solve the proposed model, we also design a hybrid intelligent algorithm which uses fuzzy simulation to generate a training data set, the back propagation algorithm to train a neural network to approximate the uncertain function and genetic algorithm to optimize the system performance. Finally, a numerical experiment is discussed to illustrate the idea of the modeling and the effectiveness of the proposed algorithm.

Published in:

Fuzzy Systems, 2003. FUZZ '03. The 12th IEEE International Conference on  (Volume:2 )

Date of Conference:

25-28 May 2003