Title :
A graph approach to uniform observability of nonlinear multi-output systems
Author :
Bornard, G. ; Hammouri, H.
Author_Institution :
Lab. d´´Automatique, CNRS, St. Martin d´´Heres, France
Abstract :
The sufficient conditions for uniform observability of multi-output nonlinear systems (observability "for any input") are revisited. A uniform observability graph is defined on a "canonical" form of the system. The absence of cycle in this graph provides a sufficient condition of uniform observability. The synthesis of a high gain observer requires a supplementary condition. In this sense, these results are a refinement of those already known. Meanwhile, the graph approach makes easier the understanding of the uniform observability condition in the multi-output case.
Keywords :
graph theory; nonlinear systems; observability; observers; graph theory; high gain observer; multiple output systems; nonlinear systems; sufficient conditions; uniform observability; Control systems; Linearity; Observability; Upper bound; Virtual manufacturing;
Conference_Titel :
Decision and Control, 2002, Proceedings of the 41st IEEE Conference on
Print_ISBN :
0-7803-7516-5
DOI :
10.1109/CDC.2002.1184586