Control of integral processes with dead-time. 1. Disturbance observer-based 2 DOF control scheme

Author

Zhong, Q.-C. ; Normey-Rico, J.E.

Author_Institution

Fac. of Mech. Eng., Technion-Israel Inst. of Technol., Haifa, Israel

Volume

149

Issue

4

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

285

Lastpage

290

Abstract

A disturbance observer-based control scheme (a version of 2 DOF internal model control) which is very effective in controlling integral processes with dead time is presented. The controller can be designed to reject ramp disturbances as well as step disturbances and even arbitrary disturbances. When the plant model is available only two parameters are left to tune. One is the time constant of the set-point response and the other is the time constant of the disturbance response. The latter is tuned according to the compromise between disturbance response and robustness. This control scheme has a simple, clear, easy-to-design, easy-to-implement structure and good performance. It is compared to the best results (so far) using some simulation examples

Keywords

control system synthesis; observers; robust control; transfer functions; tuning; 2 DOF internal model control; dead-time; disturbance observer-based 2 DOF control scheme; disturbance response; integral processes; ramp disturbances rejection; robustness; set-point response; time constant;

fLanguage

English

Journal_Title

Control Theory and Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2379

Type

jour

DOI

10.1049/ip-cta:20020438

Filename

1039151