Title :
A design methodology of constraint-based fuzzy logic controller
Author :
Chiang, David ; Lai, Robert
Author_Institution :
Dept. of Comput. Eng.& Sci., Yuan Ze Univ., Chung-li, Taiwan
Abstract :
Constraint-based fuzzy logic controllers (CFLCs) have been recognized as a unified framework of control system design. Arbitrary types of constraints are allowed in a CFLC to specify the desired states of a plant. The purpose of this paper is to present a design methodology of CFLCs, transforming the intention of a control system into a network of fuzzy constraints. The task of designing a CFLC could be viewed as a process of incremental constraint-based problem-solving, namely a fuzzy constraint refinement problem. Specifically, a schema could be derived for the configuration of a CFLC; after that, constraints can be gradually added (or removed) into the schema until the performance requirements are met. Based on this framework, we have successfully designed a CFLC for modeling a simplified rotary cement kiln that has both nonlinear and time varying characteristics of a plant
Keywords :
cement industry; constraint handling; control system synthesis; fuzzy control; problem solving; CFLC; constraint-based fuzzy logic controllers; control system design; design methodology; fuzzy constraint refinement problem; fuzzy constraints; incremental constraint-based problem-solving; nonlinear characteristics; rotary cement kiln; time varying characteristics; Control system synthesis; Control systems; Design methodology; Fuzzy control; Fuzzy logic; Fuzzy sets; Fuzzy systems; Kilns; Problem-solving; Process control;
Conference_Titel :
IFSA World Congress and 20th NAFIPS International Conference, 2001. Joint 9th
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7078-3
DOI :
10.1109/NAFIPS.2001.943728
