Title :
Stability of fuzzy linguistic control systems
Author :
Langari, Gholamreza ; Tomizuka, Masayoshi
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA, USA
Abstract :
A new approach to the stability analysis of fuzzy linguistic control (FLC) systems is presented. Specifically, it is shown that the direct method of Lyapunov can be used to determine sufficient conditions for global stability of a broad class of fuzzy control schemes. Moreover, a measure of robustness is proposed that can be used to evaluate and possibly redesign a given fuzzy control system so as to enhance the range of its stable operation. Finally, the application of the proposed methodology is shown and its implications in terms of control design are demonstrated by means of numeric examples
Keywords :
Lyapunov methods; control system synthesis; fuzzy set theory; inference mechanisms; stability; Lyapunov methods; fuzzy linguistic control; inference engine; robustness; rule base; stability; sufficient conditions; Control design; Control systems; Fuzzy control; Fuzzy logic; Fuzzy sets; Fuzzy systems; Mechanical engineering; Robust control; Robust stability; Sufficient conditions;
Conference_Titel :
Decision and Control, 1990., Proceedings of the 29th IEEE Conference on
Conference_Location :
Honolulu, HI
DOI :
10.1109/CDC.1990.204014
