Title :
Fuzzy variable structure control
Author :
Li, H.X. ; Gatland, H.B. ; Green, A.W.
Author_Institution :
Dept. of Electr. & Electron. Eng., Auckland Univ., New Zealand
fDate :
4/1/1997 12:00:00 AM
Abstract :
A new methodology is presented to improve the design and tuning of a fuzzy logic controller (FLC) using variable structure control (VSC) theory. A VSC-type rule base is constructed and the fundamentals of FLC explored quantitatively by VSC theory. A very concise mathematical expression for the FLC is presented, in which the Lyapunov stability criterion can be applied to guide the design and tuning. This results in a simpler and more systematic procedure. Application of the method to higher order systems is made straight forward by applying a hierarchical technique. The validity of the design methodology is demonstrated by simulation
Keywords :
Lyapunov methods; controllers; fuzzy control; fuzzy logic; stability; tuning; variable structure systems; Lyapunov stability criterion; VSC-type rule base; design methodology; fuzzy logic controller; fuzzy variable structure control; hierarchical technique; mathematical expression; simulation; tuning; Control system synthesis; Control systems; Design methodology; Electrical equipment industry; Force control; Fuzzy control; Fuzzy logic; Industrial control; Lyapunov method; Two-term control;
Journal_Title :
Systems, Man, and Cybernetics, Part B: Cybernetics, IEEE Transactions on
DOI :
10.1109/3477.558824
