Title :
Comparing FOPDT and IPDT model based PI controllers with disturbance observer
Author :
Tapak, Peter ; Huba, M.
Author_Institution :
Slovak Univ. of Technol. in Bratislava, Bratislava, Slovakia
Abstract :
The first order process model altogether with the proportional-integral (PI) controllers represent the most popular setting for controller design applied in practice. The paper compares the performance of two disturbance observer based PI controllers, one designed using a FOPDT model combined with a loop linearization based on inverse input-output steady-state characteristic and the second using an IPDT model identified in several working points by a relay experiment. Both approaches are compared by means of a nonlinear laboratory plant model.
Keywords :
PI control; control system synthesis; linearisation techniques; nonlinear control systems; observers; FOPDT model based PI controller; IPDT model based PI controller; controller design; disturbance observer; first order plus dead time model; integral plus dead time model; inverse input-output steady-state characteristic; loop linearization; nonlinear laboratory plant model; relay experiment; Approximation methods; Delays; Mathematical model; Observers; Relays; Tuning;
Conference_Titel :
Electrical and Power Engineering (EPE), 2014 International Conference and Exposition on
Conference_Location :
Iasi
DOI :
10.1109/ICEPE.2014.6969870
