Title :
Tuning of Multivariable Decentralized Controllers Through the Ultimate-Point Method
Author :
Campestrini, Lucíola ; Filho, Luiz Carlos Stevanatto ; Bazanella, Alexandre Sanfelice
Author_Institution :
Electr. Eng. Dept., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
Abstract :
A successful method for tuning single-loop PID controllers is the ultimate-point method. This method is based on the identification of the ultimate point of the process´ frequency response followed by its shifting, through appropriate choices of the controller´s parameters, to a specified location of the complex plane. This paper presents an extension of the ultimate-point method to the tuning of decentralized controllers for multivariable processes.
Keywords :
decentralised control; frequency control; multivariable control systems; process control; three-term control; multivariable decentralized control; process frequency response; single-loop PID control; ultimate-point method; Characteristic loci; PID control; Ziegler–Nichols formulas; multivariable decentralized control; relay-feedback experiment; stability margins; ultimate-point method;
Journal_Title :
Control Systems Technology, IEEE Transactions on
DOI :
10.1109/TCST.2008.2006495
