FUZZY CONTROLLER AND FUZZY INFERENCE METHOD

摘要

PURPOSE:To improve the quick responsiveness by using a conventional control means based on error information as a first control means and providing a second control means based on target value information and controlling a control object based on the sum of outputs of two control means. CONSTITUTION:A target value (r) is inputted to a comparator 4 and a second fuzzy controller 3, and the comparator 4 obtains the difference between a controlled variable (y) and the target value (r) and inputs it as an error (e) to a first fuzzy controller 1. The first fuzzy controller 1 performs the fuzzy inference to obtain a manipulated variable (u) and inputs it to an adder 5, and the second fuzzy controller 3 performs the fuzzy inference corresponding to the reverse of a plant model based on the target value (r) and sends the results to the adder 5. Consequently, the quick responsiveness for the target value is obtained by the inference variable from the target value due to the second inference result, and a steady response of higher precision is obtained by the inference variable form error information due to the first inference result. Thus, the quick responsiveness for fuzzy control is improved.