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Observer scheme for state and parameter estimation in asynchronous motors with application to speed control

Abstract : The paper presents a method for simultaneous state and parameter estimation in induction motors, based on an exact Kalman-like observer. The use of such an observer is made possible by an immersion of the nonlinear model of the machine into a model which is affine with respect to the variables to be estimated. This method can be used in various cases of unknown variables to be estimated, from the most simple case when only the stator flux components are unknown, to some "worst" case when all the electrical parameters, along with the stator fluxes, angular velocity and load torque are to be estimated. In any case, global exponential estimation is guaranteed under appropriate excitation, following Kalman theory. In practice, the method is evaluated through simulations within an estimate-based speed control scheme.
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https://hal.archives-ouvertes.fr/hal-00125082
Contributor : Gildas Besancon <>
Submitted on : Wednesday, January 17, 2007 - 5:50:29 PM
Last modification on : Friday, November 6, 2020 - 4:13:34 AM

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  • HAL Id : hal-00125082, version 1

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Alexandru Ticlea, Gildas Besancon. Observer scheme for state and parameter estimation in asynchronous motors with application to speed control. European Journal of Control, Elsevier, 2006, 12, p. 400-412. ⟨hal-00125082⟩

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