IIR Youla-Kucera parametrized adaptive feedforward compensators for active vibration control with mechanical coupling

Ioan Doré Landau 1 Tudor-Bogdan Airimitoaie 1 Marouane Alma 1
1 GIPSA-SLR - SLR
GIPSA-DA - Département Automatique
Abstract : Adaptive feedforward broadband vibration (or noise) compensation requires a reliable correlated measurement with the disturbance (an image of the disturbance). The reliability of this measurement is compromised in most of the systems by a "positive" internal feedback coupling between the compensator system and the correlated measurement of the disturbance. The system may become unstable if the adaptation algorithms do not take in account this positive feedback. Instead of using classical IIR or FIR feedforward compensators, the present paper proposes and analyses an IIR Youla - Kucera parametrization of the feedforward compensator. A model based central IIR stabilizing compensator is used and its performance is enhanced by the adaptation of the parameters (Q-parameters) of an IIR Youla-Kucera filter. Adaptation algorithms assuring the stability of the system in the presence of the positive internal feedback are provided. Their performances are evaluated experimentally on an active vibration control (AVC) system. Theoretical and experimental comparisons with FIR Youla-Kucera parametrized feedforward compensators and IIR feedforward compensators are provided.
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Submitted on : Friday, February 24, 2012 - 9:57:12 AM
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Ioan Doré Landau, Tudor-Bogdan Airimitoaie, Marouane Alma. IIR Youla-Kucera parametrized adaptive feedforward compensators for active vibration control with mechanical coupling. IEEE Transactions on Control Systems Technology, Institute of Electrical and Electronics Engineers, 2013, 21 (3), pp.765-779. 〈10.1109/TCST.2012.2194714〉. 〈hal-00673716〉

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