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Preprints submitted to IJC Aldeen & Sharma Page 1 of 21
 

Summary: Preprints submitted to IJC Aldeen & Sharma
Page 1 of 21
ESTIMATION OF STATES, FAULTS AND UNKNOWN
DISTURBANCES IN NONLINEAR SYSTEMS
M. Aldeen and R. Sharma*
Department of Electrical and Electronic Engineering
The University of Melbourne
Australia.
* Corresponding author
ABSTRACT
In this paper, we extend existing theory on nonlinear unknown input observer
design to a wider class of nonlinear systems where the systems are subject to
unknown input and output disturbances and experience faults. The approach used is to
decouple the faults and unknown disturbances from the rest of the system through a
series of transformations on state and output equations. Once total disturbance
decoupling is achieved, an appropriate observer for the disturbance free part of the
nonlinear system is proposed and designed. The designed observer is, subsequently,
used for estimation of unknown inputs, outputs, and fault signals. Two examples are
given for illustration.
Keywords: Nonlinear Observer, Fault Detection, Unknown Inputs.

  

Source: Aldeen, Mohammad - Department of Electrical and Electronic Engineering, University of Melbourne

 

Collections: Engineering