Disturbance observer structure based internal model control for time delay systems

Author

Dasgupta, Sudeshna ; Sadhu, Smita ; Ghoshal, T.K.

Author_Institution

Dept. of Electr. Eng., Jadavpur Univ., Kolkata, India

fYear

2015

fDate

18-20 March 2015

Firstpage

1

Lastpage

5

Abstract

This paper presents a Disturbance Observer (DOB) like structure of Internal Model Control (IMC) for Single-Input-Single-Output (SISO) time delay systems. Here, a Conical Tank process which is modeled as a FOPDT (First Order Plus Delay Time) SISO system has been considered. A Modified Disturbance Observer (MDOB) concept has been used for the SISO time delay system. By using DOB like structure of IMC, set-point tracking, disturbance rejection and robustness with respect to parametric uncertainty have been evaluated using simulation.

Keywords

control system synthesis; delay systems; observers; process control; robust control; tanks (containers); uncertain systems; DOB like structure; FOPDT; IMC; SISO system; conical tank process; disturbance observer structure; disturbance rejection; first order plus delay time; internal model control; modified disturbance observer; parametric uncertainty; robustness; set-point tracking; single-input-single-output system; time delay system; Delay effects; Observers; Process control; Robustness; Root mean square; Transfer functions; Uncertainty; Disturbance Observer; Internal Model Control; disturbance rejection; robustness; time delay systems; tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems (CISS), 2015 49th Annual Conference on

Conference_Location

Baltimore, MD

Type

conf

DOI

10.1109/CISS.2015.7086880

Filename

7086880