Tracking and disturbance rejection for an uncertain system using fast output sampling
Publikationstyp
Journal Article
Date Issued
1999
Sprache
English
Author(s)
Journal
Volume
5
Issue
1
Start Page
129
End Page
137
Citation
European Journal of Control 5 (1): 129-137 (1999)
Publisher DOI
Scopus ID
It is shown how a recently proposed sampled-data, multi-rate output feedback controller can be designed to realise the effect of robust state feedback, so that when applied simultaneously to a family of linear plants, the closed-loop eigenvalues are retained. This is not possible when a Luenberger observer is used to realise state feedback. The multi-rate control law proposed here is useful because it allows to utilise previously developed LMI methods for robust state feedback design when the full state is not available for feedback. A practical design example is presented, and experimental results show that, using the same state feedback design, the multi-rate controller gives performance superior to that achieved with an observer.