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Nonlinear observer design via an extended observer canonical form. (English) Zbl 0724.93009
Summary: Based on the theory of designing unkown input observers, an extended nonlinear observer canonical form is introduced. Observers can easily be constructed for those systems which can be transformed into this canonical form. Necessary and sufficient conditions for the existence of such transformation are derived and furthermore an algorithm for calculating this transformation is given.

MSC:
93B07 Observability
93C10 Nonlinear systems in control theory
93C15 Control/observation systems governed by ordinary differential equations
93B10 Canonical structure
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