Adaptive feedforward compensation algorithms for AVC systems in presence of a feedback controller

Marouane Alma (1) , Ioan Doré Landau (1) , Tudor-Bogdan Airimitoaie (1)

1 GIPSA-SLR - GIPSA - Systèmes linéaires et robustesse

In recent papers adaptation algorithms taking in account the "positive" feedback coupling arising in most of the active noise and vibration control systems have been proposed and analyzed. The stability of the system requires satisfaction of a positive real condition through an appropriate filtering of the regressor vector. It is shown in this note that the presence in addition of a feedback controller on one hand strongly influences the positive real conditions for stability and the structure of the filter to be used in the algorithm and on the other hand improves significantly the performance of the system. Experimental results obtained on an active vibration control (AVC) system clearly illustrate the benefit of using a hybrid adaptive feedforward + feedback approach.

Mots clés: active vibration control; adaptive feedforward compensation; feedback control; adaptive control; parameter estimation

Domaines: Automatique / Robotique

Marouane Alma, Ioan Doré Landau, Tudor-Bogdan Airimitoaie. Adaptive feedforward compensation algorithms for AVC systems in presence of a feedback controller. Automatica, 2012, 48 (5), pp.982-985. ⟨10.1016/j.automatica.2012.02.015⟩. ⟨hal-00673708⟩