Tuning fuzzy feedback controllers using the circle criterion

Author

Haissig, Christine M.

Author_Institution

Technol. Centre, Honeywell Inc., Minneapolis, MN, USA

fYear

1996

fDate

15-18 Sep 1996

Firstpage

85

Lastpage

90

Abstract

This paper illustrates a method for tuning fuzzy feedback controllers using the circle criterion. The method can be used for design, tuning at commissioning, or online adaptation of systems consisting of a fuzzy feedback controller and a process that can be modeled as approximately linear or piecewise linear. The general tuning methodology is developed by extending the concepts of gain and phase margin from classical control. It is illustrated using a fuzzy proportional feedback controller with feedforward compensation. The paper shows that the key tuning parameter for stability is the ratio of the universe of discourse for the error input and the universe of discourse for the control output

Keywords

fuzzy control; circle criterion; feedforward compensation; fuzzy feedback controllers; gain margin; phase margin; proportional feedback control; stability; tuning; Adaptive control; Automatic control; Fuzzy control; Fuzzy systems; Open loop systems; Piecewise linear approximation; Process control; Shape control; Stability; Three-term control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1996., Proceedings of the 1996 IEEE International Conference on

Conference_Location

Dearborn, MI

Print_ISBN

0-7803-2975-9

Type

conf

DOI

10.1109/CCA.1996.558611

Filename

558611