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Exponential observer design for discrete-time nonlinear systems with real parametric uncertainty

โœ Scribed by V. Sundarapandian

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
706 KB
Volume
37
Category
Article
ISSN
0895-7177

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โœฆ Synopsis

In this paper, we present a characterization and construction procedure of local exponential observers for discrete-time nonlinear systems with real parametric uncertainty under some stability assumptions. We also show that for the classical case when the state equilibrium does not change with the disturbance, and when the plant output is purely a function of the state, there is no local asymptotic observer for the plant. Next, we show that in sharp contrast to this case, for the general case of problems where we allow the state equilibrium to change with the disturbance, there typically exist local exponential observers even when the plant output is purely a function of the state. Finally, we generalize our results for discrete-time nonlinear systems with real parametric uncertainty to derive corresponding observer design results for discrete-time nonlinear systems with exogenous disturbance. ~

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