Qiang. Ma

Structural Conditions on Observability of Nonlinear Systems

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Author(s)

Qiang. Ma ^1,*

1. School of Power and Energy Engineering, Wuhan University of Technology, Wuhan, China

* Corresponding author.

DOI: https://doi.org/10.5815/ijitcs.2011.04.03

Received: 15 Sep. 2010 / Revised: 23 Feb. 2011 / Accepted: 7 May 2011 / Published: 8 Aug. 2011

Index Terms

Structural observability, identifiability, nonlinear systems, parameter space

Abstract

In this paper parameter space and Lebesgue measurement are introduced into analysis of nonlinear systems. Structural observability rank condition is defined and together with the distinguishabililty the structural observability criterions of nonlinear systems are obtained. It proves that when the parameters are not identifiable the solutions with the same time but different parameters are also indistinguishable. Differential geometry and algebraic methods are used to investigate the observability problem, and it is proved that there are some relations between these two methods. Finally, examples are used to illustrate applications of the structural observability criterions.

Cite This Paper

Qiang Ma, "Structural Conditions on Observability of Nonlinear Systems", International Journal of Information Technology and Computer Science(IJITCS), vol.3, no.4, pp.16-22, 2011. DOI:10.5815/ijitcs.2011.04.03

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International Journal of Information Technology and Computer Science (IJITCS)