화학공학소재연구정보센터
Automatica, Vol.45, No.10, 2400-2405, 2009
On the stability of a reduced-order filter based on dominant singular value decomposition of the system dynamics
The stability of a reduced-order filter (ROF), the gain of which is constructed on the basis of a subspace of dominant singular vectors of the system dynamics, is examined. A definition of s-detectability is introduced. It is found that the observability of all unstable and neutral singular vectors (s-detectability) is a sufficient condition for the existence of a stable filter. (C) 2009 Elsevier Ltd. All rights reserved.