Active Fault Tolerant Control for Ultrasonic Piezoelectric Motor
Identifieur interne : 000112 ( Istex/Curation ); précédent : 000111; suivant : 000113Active Fault Tolerant Control for Ultrasonic Piezoelectric Motor
Auteurs : Moussa Boukhnifer [France]Source :
- Journal of Electrical Engineering [ 1335-3632 ] ; 2012-07-01.
English descriptors
Abstract
Ultrasonic piezoelectric motor technology is an important system component in integrated mechatronics devices working on extreme operating conditions. Due to these constraints, robustness and performance of the control interfaces should be taken into account in the motor design. In this paper, we apply a new architecture for a fault tolerant control using Youla parameterization for an ultrasonic piezoelectric motor. The distinguished feature of proposed controller architecture is that it shows structurally how the controller design for performance and robustness may be done separately which has the potential to overcome the conflict between performance and robustness in the traditional feedback framework. A fault tolerant control architecture includes two parts: one part for performance and the other part for robustness. The controller design works in such a way that the feedback control system will be solely controlled by the proportional plus double-integral PI2 performance controller for a nominal model without disturbances and H∞ robustification controller will only be activated in the presence of the uncertainties or an external disturbances. The simulation results demonstrate the effectiveness of the proposed fault tolerant control architecture.
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DOI: 10.2478/v10187-012-0032-8
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