Fuzzy system, fuzzy control system development support apparatus, and method of developing a fuzzy control system

Abstract

A membership function unit includes a membership function setting section for adjusting positions or shapes of membership functions depending on inputs of elements influencing human senses so as to set the membership functions and a membership value computing section for computing membership function values associated with input variables in the membership functions attained by the membership function setting section. The invention also relates to a fuzzy control system development support apparatus. The invention also relates to a method of developing a fuzzy control system.

1. A fuzzy control system development support apparatus comprising:
 a knowledge base storing therein fuzzy rules and membership functions previously set;  
 simulation means for generating and supplying a pseudo input;  
 means for performing a fuzzy inference on said pseudo input supplied from said generating means in accordance with said fuzzy rules and membership functions stored in said knowledge base;  
 means for outputting an inference result obtained by said inference performing means;  
 a display means for enabling the editing of said fuzzy rules and membership functions; and  
 translator means for translating said knowledge base into an arbitrary language.  
 
     
     
       2. A fuzzy control system development support apparatus comprising:
 a control objective model to be controlled in a simulation;  
 a knowledge base storing therein fuzzy rules and membership functions previously set;  
 a display means for enabling editing of said fuzzy rules and said membership functions stored in said knowledge base;  
 translation means for translating said knowledge base into an arbitrary language;  
 means for generating and supplying a pseudo input;  
 means for performing fuzzy inferences on said pseudo input supplied from said generating means and feedback from said model in accordance with said fuzzy rules and membership functions stored in said knowledge base and for supplying the inference result to said model; and  
 means for outputting at least one status of said model controlled by said fuzzy inference performing means.  
 
     
     
       3. A method of developing a fuzzy control system comprising the steps of:
   preparing a knowledge base storing therein fuzzy rules and membership functions;        generating and supplying a pseudo input for simulation;        performing a fuzzy inference on said supplied pseudo input in accordance with said fuzzy rules and membership functions stored in said knowledge base;        outputting an inference result obtained by said performed fuzzy inference;        editing said fuzzy rules and membership functions, said editing step including the step of using a display; and        translating said knowledge base into a language.     
     
     
       4. A method of developing a fuzzy control system comprising the steps of:
   preparing a control objective model to be controlled in a simulation;        preparing a knowledge base storing therein fuzzy rules and membership functions;        editing said fuzzy rules and said membership functions stored in said knowledge base, said editing step including the step of using a display;        translating said knowledge base into a language;        generating and supplying a pseudo input;        performing fuzzy inferences on said supplied pseudo input and feedback from said model in accordance with said fuzzy rules and membership functions stored in said knowledge base, and supplying the inference result to said model; and        outputting at least one status of said model controlled by said inference result.