On the ppolytopic ad multimodel state abservers of induction motor

الملخص EN

This paper describes a synthesis of polytrophic and multimodal state observers for ungmtain omplex systems.

The first approach is based on a polytrophic representation of the dynamj ^ yWem nth variable parameters.

When the property of quadratic detestability is checked for me smdSkl system, the observation gain is obtained by the resolution of Linear Matrix Inequ ^ tolmi (BMIM or responding to various tops of the poly tope.

In the second approach, the m.ultimmde ^ mbserver is leduced from the fusion of linear state observers synthesized for the local mgJMlswf Me process.

uch fusion is based on the concept of validity of each observer comptfied9p pfjkreaTprocess.

The erformances and the comparison between these two robust observers are lesteaNn? simulation to econstruct the induction motor rotor flux, from the measurements o] slatoric voltages and urrents, with parametric variations considered on rotor and slalor resistances.