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State observers for a class of multi-output nonlinear dynamic systems. (English) Zbl 1221.93035
Summary: This note considers the problem of observer design for a class of multi-output nonlinear systems. A new state observer design methodology for linear time-varying multi-output systems is presented. Furthermore, we show that the same methodology can be extended to a class of multi-output nonlinear systems. Some sufficient conditions for the existence of the proposed observer are obtained, which guarantee that the error of state estimation converges asymptotically to zero. An example is given to demonstrate the effectiveness of the proposed methodology.

##### MSC:
 93B07 Observability 93C10 Nonlinear systems in control theory 34H05 Control problems involving ordinary differential equations
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##### References:
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