Improved disturbance rejection for MIMO systems with output time delays

Author

Doering, Jeffrey A. ; Parker, Gordon G.

Author_Institution

Ford Motor Co., Dearborn, MI, USA

Volume

4

fYear

2000

fDate

2000

Firstpage

2501

Abstract

This paper presents a new control structure for improved rejection of unknown step disturbances in multiple-input-multiple-output systems with multiple time delays. After a review of published work extending the Smith predictor for MIMO systems, the new control structure is presented using estimated and actual system outputs for output error prediction but using state-space control methods for the undelayed synthetic feedback loop. This new structure is applied to a simple example, demonstrating improved disturbance rejection (approximately half the integrated square error) and less sensitivity to mismatch in time delay estimates

Keywords

MIMO systems; delays; feedback; multivariable control systems; predictive control; stability; state-space methods; uncertain systems; MIMO systems; Smith predictor; control structure; disturbance rejection; integrated square error; mismatch insensitivity; multiple time delays; multiple-input-multiple-output systems; output error prediction; output time delays; state-space control methods; time delay estimates; undelayed synthetic feedback loop; Chemical industry; Chemical sensors; Control systems; Delay effects; Delay estimation; Error correction; Feedback loop; Fluid flow control; MIMO; State estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2000. Proceedings of the 2000

Conference_Location

Chicago, IL

ISSN

0743-1619

Print_ISBN

0-7803-5519-9

Type

conf

DOI

10.1109/ACC.2000.878633

Filename

878633