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Design of an iterative auto-tuning algorithm for a fuzzy PID controller

Saeed, Bakhtiar I. and Mehrdadi, Bruce (2012) Design of an iterative auto-tuning algorithm for a fuzzy PID controller. Journal of Physics: Conference Series, 364. ISSN 1742-6596

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Since the first application of fuzzy logic in the field of control engineering, it has been extensively employed in controlling a wide range of applications. The human knowledge on controlling complex and non-linear processes can be incorporated into a controller in the form of linguistic terms. However, with the lack of analytical design study it is becoming more difficult to auto-tune controller parameters. Fuzzy logic controller has several parameters that can be adjusted, such as: membership functions, rule-base and scaling gains. Furthermore, it is not always easy to find the relation between the type of membership functions or rule-base and the controller performance. This study proposes a new systematic auto-tuning algorithm to fine tune fuzzy logic controller gains. A fuzzy PID controller is proposed and applied to several second order systems. The relationship between the closed-loop response and the controller parameters is analysed to devise an auto-tuning method. The results show that the proposed method is highly effective and produces zero overshoot with enhanced transient response. In addition, the robustness of the controller is investigated in the case of parameter changes and the results show a satisfactory performance.

Item Type: Article
Additional Information: Paper presented at 25th International Congress on Condition Monitoring and Diagnostic Engineering (COMADEM 2012), University of Huddersfield, 18th - 20th June 2012
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Schools: School of Computing and Engineering
School of Computing and Engineering > Systems Engineering Research Group
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Depositing User: Bruce Mehrdadi
Date Deposited: 08 Oct 2012 15:45
Last Modified: 28 Aug 2021 20:29


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