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Design of multivariable PID controllers using real-coded population-based extremal optimization
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DOI：10.1016/j.neucom.2014.10.060.png)
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The issue of designing and tuning an effective and efficient multivariable PID controller for a multivariable control system to obtain high-quality performance is of great theoretical importance and practical significance. As a novel evolutionary algorithm inspired from statistical physics and coevolution, extremal optimization (EO) has successfully applied to a variety of optimization problems while the applications of E0 into the design of multivariable PID and PI controllers are relatively rare. This paper presents a novel real-coded population-based EO (RPEO) method for the design of multivariable PID and PI controllers. The basic idea behind RPEO is based on population-based iterated optimization process consisting of the following key operations including generation of a real-coded random initial population by encoding the parameters of a multivariable PID or PI controller into a set of real values, evaluation of the individual fitness by using a novel and reasonable control performance index, generation of new population based on multi-non-uniform mutation and updating the population by accepting the new population unconditionally. From the perspectives of simplicity and accuracy, the proposed RPEO algorithm is demonstrated to outperform other reported popular evolutionary algorithms, such as real-coded genetic algorithm (RGA) with multi-crossover or simulated binary crossover, differential evolution (DE), modified particle swarm optimization (MPSO), probability based discrete binary PSO (PBPSO), and covariance matrix adaptation evolution strategy (CMAES) by the experimental results on the benchmark multivariable binary distillation column plant. (C) 2014 Elsevier B.V. All rights reserved.
Keyword:
Multivariable PID controllers
Extremal optimization
Multi-non-uniform mutation
Evolutionary algorithms
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6.5
论文数:
2.5W
被引数:
6.5W
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Comparative performance analysis of various binary coded PSO algorithms in multivariable PID controller design多变量PID控制器设计中各种二进制编码PSO算法的性能比较分析
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