Title :
A double-level fuzzy controller with an intelligently adjusting strategy of quantization and scale factors
Author :
Xinxin, Yang ; Lei, Yang ; Kezhong, He ; Shengle, Huang ; Muhe, Guo ; Bo, Zhang
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
Based on the analysis of how the quantization and scale factors influence the system performance and the relationship between these factors and the membership functions, a double-level fuzzy controller(DLFC) with an intelligently adjusting strategy of these factors is proposed in this paper. The senior fuzzy controller in the DLFC can adjust the quantization and scale factors of the junior fuzzy controller online, while the latter performs the control of the process. The DLFC has a better robustness than the basic fuzzy controller, which is proved by the simulation results presented in the paper. Two examples of the application of the DLFC to a microwave oven control system and a chemical process are also reported
Keywords :
fuzzy control; hierarchical systems; intelligent control; chemical process; double-level fuzzy controller; intelligently adjusting strategy; membership functions; microwave oven control system; quantization; scale factors; Chemical processes; Control systems; Fuzzy control; Fuzzy systems; Microwave ovens; Performance analysis; Process control; Quantization; Robust control; System performance;
Conference_Titel :
Systems, Man, and Cybernetics, 1996., IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-3280-6
DOI :
10.1109/ICSMC.1996.569781
