Title :
On-line self tuning fuzzy controller using intelligent membership function
Author :
Oh, Seok-Yon G. ; Park, Dong-Jo
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
A new design method is proposed for a fuzzy logic controller (FLC). By analyzing phase plane characteristics we can build and optimize the rule base of FLC. Variation of universe of discourse (UOD) can give coarse or fine control effects. With this variable UOD an adaptive gain tuning method is used to improve performance in transient and steady state. To show the improved performance of FLC and effectiveness of these methodologies, it is applied to design of attitude control system for a flexible spacecraft which has inherently a strong nonlinearities such as a hysteresis and a dead band
Keywords :
adaptive control; fuzzy control; intelligent control; phase space methods; self-adjusting systems; adaptive gain tuning method; attitude control system; coarse control; dead band; fine control; flexible spacecraft; hysteresis; intelligent membership function; online self-tuning fuzzy controller; phase-plane characteristics; rule base; steady-state performance; strong nonlinearities; transient performance; universe of discourse; Algorithm design and analysis; Control systems; Design methodology; Error correction; Fuzzy control; Fuzzy systems; Input variables; Niobium; Nonlinear control systems; PD control;
Conference_Titel :
SICE '95. Proceedings of the 34th SICE Annual Conference. International Session Papers
Conference_Location :
Hokkaido
Print_ISBN :
0-7803-2781-0
DOI :
10.1109/SICE.1995.526702
