Title
Positive Observers For Linear Positive Systems, And Their Implications
Abstract
A treatment of the positive observation problem for positive systems is provided, for the continuous and discrete-time cases. The proposed observers are positive, that is, they ensure that the estimates are nonnegative at any time. Moreover, necessary and sufficient conditions for the existence of such positive observers are formulated in terms of linear programming. Also, we show how positive observers can provide guaranteed bounds on the real states of uncertain positive systems. In addition, some implications are discussed; especially, it is shown that it is not possible to stabilise an unstable system using these positive observers. Finally, the applicability of the proposed interval estimation approach is shown for an illustrative application from pharmacokinetics.
Year
DOI
Venue
2011
10.1080/00207179.2011.573000
INTERNATIONAL JOURNAL OF CONTROL
Keywords
Field
DocType
positive observers, linear programming, uncertain systems, positive systems
Interval estimation,Control theory,Linear programming,Discrete time and continuous time,Uncertain systems,Observer (quantum physics),System identification,Mathematics,Positive systems
Journal
Volume
Issue
ISSN
84
4
0020-7179
Citations 
PageRank 
References 
27
1.15
7
Authors
3
Name
Order
Citations
PageRank
Mustapha Ait Rami114310.15
Fernando Tadeo217318.19
Uwe Helmke333742.53