PSO-based intelligent digital redesign of T-S fuzzy controller

Chen Chien Hsu, Shu Han Chu, Yi Hsing Chien

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a novel method is proposed to solve the complex mathematical model of digital redesign of nonlinear systems which is regarded difficult to approximate. The paper uses the T-S fuzzy model and particle swarm optimization (PSO) to search for the range of digital-controller parameters and to obtain the optimized digital controller using this algorithm. Due to the difficulty in establishing the discrete model of the interval system and designing the digital controller of the interval system, we have formulated the design problem into an optimization problem of a cost function. First, we process the continuous-time nonlinear systems using the T-S fuzzy model, followed by designing a continuous-time controller using individual rules. The next step is to express all possible linear systems as interval systems and search for the range of digital-controller parameters using PSO to narrow down the search range and conveniently search for the optimal solutions. According to the search range of digital controller parameters, the PSO is used to search for the discrete-time controller based on individual rules, so that the states of the discrete-time model based on the fuzzy model approximate to those of the continuous-time nonlinear systems. Finally, one example is given to prove this method is more accurate than the existing one with faster execution speed.

Original languageEnglish
Title of host publicationProceedings 2011 International Conference on System Science and Engineering, ICSSE 2011
Pages92-95
Number of pages4
DOIs
Publication statusPublished - 2011 Aug 24
Event2011 International Conference on System Science and Engineering, ICSSE 2011 - Macao, China
Duration: 2011 Jun 82011 Jun 10

Publication series

NameProceedings 2011 International Conference on System Science and Engineering, ICSSE 2011

Other

Other2011 International Conference on System Science and Engineering, ICSSE 2011
CountryChina
CityMacao
Period11/6/811/6/10

Keywords

  • T-S fuzzy model
  • intelligent digital redesign
  • particle swarm optimization

ASJC Scopus subject areas

  • Control and Systems Engineering

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  • Cite this

    Hsu, C. C., Chu, S. H., & Chien, Y. H. (2011). PSO-based intelligent digital redesign of T-S fuzzy controller. In Proceedings 2011 International Conference on System Science and Engineering, ICSSE 2011 (pp. 92-95). [5961880] (Proceedings 2011 International Conference on System Science and Engineering, ICSSE 2011). https://doi.org/10.1109/ICSSE.2011.5961880