An optimal fuzzy PID controller

Citation
Ks. Tang et al., An optimal fuzzy PID controller, IEEE IND E, 48(4), 2001, pp. 757-765
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
ISSN journal
0278-0046 → ACNP
Volume
48
Issue
4
Year of publication
2001
Pages
757 - 765
Database
ISI
SICI code
0278-0046(200108)48:4<757:AOFPC>2.0.ZU;2-5
Abstract
This paper introduces an optimal fuzzy proportional-integral-derivative (PI D) controller. The fuzzy PID controller is a discrete-time version of the c onventional PID controller, which preserves the same linear structure of th e proportional, integral, and derivative parts but has constant coefficient yet self-tuned control gains. Fuzzy logic is employed only for the design; the resulting controller does not need to execute any fuzzy rule base, and is actually a conventional PID controller with analytic formulas. The main improvement is in endowing the classical controller with a certain adaptiv e control capability. The constant PID control gains are optimized by using the multiobjective generic algorithm (MOGA), thereby yielding an optimal f uzzy PID controller. Computer simulations are shown to demonstrate its impr ovement over the fuzzy PID controller without MOGA optimization.