Design of unknown input observers for Lipschitz nonlinear systems | IEEE Conference Publication | IEEE Xplore

Design of unknown input observers for Lipschitz nonlinear systems


Abstract:

The problem of unknown input observer design for Lipschitz nonlinear systems is considered. A new dynamic framework which is a generalization of previously used linear un...Show More

Abstract:

The problem of unknown input observer design for Lipschitz nonlinear systems is considered. A new dynamic framework which is a generalization of previously used linear unknown input observers is introduced. The additional degrees of freedom offered by this framework are used to deal with the Lipschitz nonlinearity. The necessary and sufficient condition that ensures asymptotic convergence of the new observer is presented, and the equivalence between this condition and an H/sub /spl infin// optimal control problem which satisfies the standard regularity assumptions in the H/sub /spl infin// optimization theory is shown. Based on these results, a design procedure that is solvable using commercially available software is presented.
Date of Conference: 08-10 June 2005
Date Added to IEEE Xplore: 01 August 2005
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Conference Location: Portland, OR, USA

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