A retrospective correction filter for discrete-time adaptive control of nonmiminum-phase systems

Author

Santillo, Mario A. ; Bernstein, Dennis S.

Author_Institution

Dept. of Aerosp. Eng., Univ. of Michigan, Ann Arbor, MI, USA

fYear

2008

fDate

9-11 Dec. 2008

Firstpage

690

Lastpage

695

Abstract

We present a discrete-time adaptive control law that is effective for systems that are unstable, MIMO, and/or nonminimum phase. The adaptive control algorithm provides guidelines concerning the modeling information needed for implementation. This information includes a sufficient number of Markov parameters to capture the sign of the high-frequency gain as well as the nonminimum-phase zeros. No additional information about the poles or zeros need be known.We present numerical examples to illustrate the algorithmÂ¿s effectiveness in handling nonminimum-phase zeros.

Keywords

MIMO systems; Markov processes; adaptive control; discrete time systems; filtering theory; gain control; phase control; poles and zeros; MIMO system; Markov parameter; discrete-time adaptive control; high-frequency gain; nonmiminum-phase zero system; retrospective correction filter; unstable system; Adaptive control; Adaptive filters; Control systems; Guidelines; Information analysis; MIMO; Performance analysis; Robust control; Stability analysis; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2008. CDC 2008. 47th IEEE Conference on

Conference_Location

Cancun

ISSN

0191-2216

Print_ISBN

978-1-4244-3123-6

Electronic_ISBN

0191-2216

Type

conf

DOI

10.1109/CDC.2008.4739238

Filename

4739238