DocumentCode :
1273933
Title :
Design of Observers With Error Limitation in Discrete-Time Descriptor Systems: A Case Study of a Hydraulic Tank System
Author :
Araújo, José M. ; Barros, Péricles R. ; Dórea, Carlos E T
Author_Institution :
Dept. de Eng. Eletr., Univ. Fed. de Campina Grande, Campina Grande, Brazil
Volume :
20
Issue :
4
fYear :
2012
fDate :
7/1/2012 12:00:00 AM
Firstpage :
1041
Lastpage :
1047
Abstract :
A novel descriptor observer structure is proposed in the context of discrete-time descriptor linear systems. On the basis of this new structure, the characterization of conditioned-invariant polyhedral sets with the purpose of limiting the estimation error is carried out. Limitation of the estimation error can be achieved by the computation of an as small as possible conditioned-invariant polyhedron, that contains the set of possible initial errors, and by a suitable output injection law. The approach is applied to an experimental tanks platform, for which a descriptor model is identified and validated. The obtained results confirm the merits of the proposed observer for applications in this kind of systems.
Keywords :
control system synthesis; discrete time systems; hydraulic systems; linear systems; observers; set theory; tanks (containers); conditioned-invariant polyhedral sets; descriptor observer structure; discrete time descriptor linear systems; estimation error limitation; hydraulic accumulators; hydraulic tank system; observer design; output injection law; Equations; Estimation error; Linear systems; Mathematical model; Noise; Noise measurement; Observers; Descriptor systems; hydraulic accumulators; observers; set invariance;
fLanguage :
English
Journal_Title :
Control Systems Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
1063-6536
Type :
jour
DOI :
10.1109/TCST.2011.2159719
Filename :
5955082
Link To Document :
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