Vol.9, No 1, 2010 pp. 1 - 18
UDC 681.327.2 681.5.01
ASPECTS CONCERNING THE TUNING OF 2-DOF FUZZY CONTROLLERS
Stefan Preitl1, Radu-Emil Precup1, Zsuzsa Preitl2
1"Politehnica" University of Timisoara, Department of Automation and Applied Informatics, Bd. V. Parvan 2, 300223 Timisoara, Romania
2Department of Control and Transport Automation, Budapest University of Technology and Economics, Bertalan L. u. 2, H-1111 Budapest, Hungary, and also with the Department of Automation and Applied Informatics, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Parvan 2, 300223 Timisoara, Romania
E-mail: stefan.preitl@aut.upt.ro, radu.precup@aut.upt.ro, preitl@sch.bme.hu
Abstract. The paper presents aspects concerning the tuning of two-degree-of-freedom (2-DOF) fuzzy controllers focused on 2-DOF PI-fuzzy controllers and 2-DOF PID-fuzzy controllers. 2-DOF Mamdani and Takagi-Sugeno fuzzy control system structures are offered. The tuning is based on mapping the parameters of the linear PI and PID controllers to the parameters of the fuzzy controllers in terms of the modal equivalence principle. The linear controllers are tuned by Preitl’s and Precup’s Extended Symmetrical Optimum method. Some experimental results dealing with the speed control of a servo system are given.
Key Words: 2-DOF PI-fuzzy controllers, 2-DOF PID-fuzzy controllers, PI controllers, PID controllers.
ASPEKTI PODEŠAVANJA 2-DOF FAZI KONTROLERA
Ovaj rad predstavlja aspekte podešavanja fazi kontrolera sa dva stepena slobode (2-DOF) sa težištem na 2-DOF PI-fazi kontrolerima i 2-DOF PID-fazi kontrolerima. Ponuđene su strukture sa dva stepena slobode Mamdani i Takagi-Sugeno fazi upravljačkih sistema. Podešavanje je zasnovano na mapiranju parametara linearnih PI i PID kontrolera sa parametrima fazi kontrolera u pogledu principa jednakosti. Linearni kontroleri su podešeni proširenim metodom simetričnog optimuma Preitl-a i Precup-a. Dati su neki eksperimentalni rezultati u vezi sa kontrolom brzine servo sistema.
Ključne reči: 2-DOF PI-fazi kontroleri, 2-DOF PID-fazi kontroleri, PI kontroleri, PID kontroleri