Multiobjective evolutionary approach to the design of optimal controllers for interval plants via parallel computation

Chen Chien James Hsu*, Chih Yung Yu, Shih Chi Chang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

Design of optimal controllers satisfying performance criteria of minimum tracking error and disturbance level for an interval system using a multi-objective evolutionary approach is proposed in this paper. Based on a worst-case design philosophy, the design problem is formulated as a minimax optimization problem, subsequently solved by a proposed two-phase multi-objective genetic algorithm (MOGA). By using two sets of interactive genetic algorithms where the first one determines the maximum (worst-case) cost function values for a given set of controller parameters while the other one minimizes the maximum cost function values passed from the first genetic algorithm, the proposed approach evolutionarily derives the optimal controllers for the interval system. To suitably assess chromosomes for their fitness in a population, root locations of the 32 generalized Kharitonov polynomials will be used to establish a constraints handling mechanism, based on which a fitness function can be constructed for effective evaluation of the chromosomes. Because of the time-consuming process that genetic algorithms generally exhibit, particularly the problem nature of minimax optimization, a parallel computation scheme for the evolutionary approach in the MATLAB-based working environment is also proposed to accelerate the design process.

原文英語
頁(從 - 到)2363-2373
頁數11
期刊IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
E89-A
發行號9
DOIs
出版狀態已發佈 - 2006 九月

ASJC Scopus subject areas

  • 訊號處理
  • 電腦繪圖與電腦輔助設計
  • 電氣與電子工程
  • 應用數學

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