HYBRID ACTIVE VIBRATION CONTROL METHOD AND DEVICE, PARTICULARLY FOR MECHANICAL AND ACOUSTIC VIBRATION AND THE LIKE

摘要

Filtering means include a non-adaptive feedback filter (12) generating active framework vibration control without generating instability in a first frequency band, as well as an adaptive feedforward filter (130). The feedforward filtering coefficients (140) are adapted in real time according to an algorithm selected in order to minimise the energy of the vibration sensed by sensor means (8), depending on the energy of the vibration sensed by the sensor means (100) and the previously measured transfer function in the presence of the feedback filter means and in the absence of the feedforward filter means, between actuating means (10) and the first sensor means (8). The device is used to linearise feedback control throughout a second frequency band broader than the first, to accelerate the convergence of the minimising algorithm, and to improve the strength of the feedforward filter.