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JACIII Vol.3 No.6 pp. 491-498
doi: 10.20965/jaciii.1999.p0491
(1999)

Paper:

Realization of PID Control by Fuzzy Inference and its Application to Hybrid Control

Kenichiro Hayashi, Akifumi Otsubo and Kazuhiko Shiranita

Applied Electronics Division, Industrial Technology Center of Saga 114 Yaemizo, Nabeshima-cho, Saga-shi 849-0932, Japan Tel. +81-952-30-8161Fax: +81-952-25-1694

Received:
July 12, 1998
Accepted:
June 25, 1999
Published:
December 20, 1999
Keywords:
Fuzzy inference method, PID controller, Nonlinear PID control, Linear PID control, Hybrid control, Fuzzy switching
Abstract

First, we propose a more practical method for realizing nonlinear and linear PID control by fuzzy inference. By applying the simplified direct inference of fuzzy inference to only a few simple fuzzy control rules, both nonlinear PID control based on a conventional PID controller and linear PID control are more simply realized than by previous methods. Next, we propose a hybrid control method in which fuzzy and PID control are hybridized for mutual compensation of both types of control. In this proposal, fuzzy control (nonlinear PID control) and PID control (linear PID control), realized by the simplified direct inference of fuzzy inference, are combined in parallel and used alternately. The main characteristics of this method are high-speed control realized by applying the simplified direct inference of fuzzy inference and smoothness of switching control guaranteed by fuzzy switching of fuzzy and PID control.

Cite this article as:
Kenichiro Hayashi, Akifumi Otsubo, and Kazuhiko Shiranita, “Realization of PID Control by Fuzzy Inference and its Application to Hybrid Control,” J. Adv. Comput. Intell. Intell. Inform., Vol.3, No.6, pp. 491-498, 1999.
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