NORT: a non-oscillatory robust tuning approach for 2-DoF PI controllers

Author

Alfaro, V.M. ; Vilanova, R. ; Arrieta, O.

Author_Institution

Dept. de Autom., Univ. de Costa Rica, San Jose, Costa Rica

fYear

2009

Firstpage

1003

Lastpage

1008

Abstract

A tuning method for Two-Degree-of-Freedom (2-DoF) proportional integral (PI) controllers for First-Order-Plus-Dead-Time (FOPDT) models is presented. It allows the designer to deal with the closed-loop control system performance-robustness tradeoff specifying the required minimum robustness level selecting its maximum sensitivity in the 1.2 to 2.0 range. In addition, the performance is measured by forcing the closed-loop transfer functions to perform as close as possible to a target non-oscillatory dynamics. Controller tuning equations are provided for FOPDT models with normalized dead-times from 0.1 to 2.0. Examples show the effectiveness of the proposed tuning method.

Keywords

PI control; closed loop systems; control system synthesis; robust control; 2-DoF PI controllers; closed- loop transfer functions; closed-loop control system; controller tuning equations; first-order-plus-dead-time models; nonoscillatory robust tuning; proportional integral controllers; Communication system control; Control system synthesis; Control systems; PD control; Pi control; Process control; Proportional control; Robust control; Telecommunication control; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, (CCA) & Intelligent Control, (ISIC), 2009 IEEE

Conference_Location

St. Petersburg

Print_ISBN

978-1-4244-4601-8

Electronic_ISBN

978-1-4244-4602-5

Type

conf

DOI

10.1109/CCA.2009.5281129

Filename

5281129