Title :
Modified relay feedback test: Industrial loop tuner implementation and experiments
Author :
Boiko, I. ; Ernyes, A. ; Oli, W. ; Tamayo, E.
Author_Institution :
IMB Controls, Univ. of Calgary, Calgary, AB, Canada
Abstract :
An industrial loop tuner that uses conventional and modified relay feedback tests is presented in the paper. The modified relay feedback test is designed the way, so that the ultimate frequency in the test coincides with the phase cross-over frequency in the open-loop system having a PID controller. This allows for simple non-parametric tuning rules for PID controllers that provide the desired gain margin exactly. Robustness of non-parametric tuning is analyzed. Simulations are provided. Industrial loop tuner CLTUNE is described.
Keywords :
distributed control; feedback; industrial control; open loop systems; relays; three-term control; tuning; Honeywell DCS TPS; PID controller; distributed control system; industrial loop tuner CLTUNE; modified relay feedback test; nonparametric tuning rule; open-loop system; phase cross-over frequency; Control systems; Electrical equipment industry; Feedback loop; Frequency; Open loop systems; Relays; System testing; Three-term control; Tuners; Tuning;
Conference_Titel :
American Control Conference, 2009. ACC '09.
Conference_Location :
St. Louis, MO
Print_ISBN :
978-1-4244-4523-3
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2009.5159803
