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Genetic algorithm design of neural network and fuzzy logic controllers

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Abstract

This paper discusses the design of neural network and fuzzy logic controllers using genetic algorithms, for real-time control of flows in sewerage networks. The soft controllers operate in a critical control range, with a simple set-point strategy governing “easy” cases. The genetic algorithm designs controllers and set-points by repeated application of a simulator. A comparison between neural network, fuzzy logic and benchmark controller performance is presented. Global and local control strategies are compared. Methods to reduce execution time of the genetic algorithm, including the use of a Tabu algorithm for training data selection, are also discussed. The results indicate that local control is superior to global control, and that the genetic algorithm design of soft controllers is feasible even for complex flow systems of a realistic scale. Neural network and fuzzy logic controllers have comparable performance, although neural networks can be successfully optimised more consistently.

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Hunter, A., Chiu, KS. Genetic algorithm design of neural network and fuzzy logic controllers. Soft Computing 4, 186–192 (2000). https://doi.org/10.1007/s005000000050

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  • DOI: https://doi.org/10.1007/s005000000050

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