METHOD AND DEVICE FOR ACTIVE CONTROL OF MECHANICAL VIBRATIONS BY IMPLEMENTING A CONTROL LAW CONSISTING OF A CENTRAL CORRECTIVE AND A PARAMETER OF YOULA

摘要

The invention relates to a method and a device based on the application of an active corrective system with central corrector and Youla parameter for the attenuation of essentially single-frequency mechanical vibration disturbances created in a material structure by a rotating machine. Previously, a correction control law corresponding to a block modeling of the system is established and calculated, said blocks being, on the one hand, those of the central corrector and, on the other hand, a parameter block of Youla, the modeling being such that only the Youla parameter, in the form of an infinite impulse response filter, has coefficients depending on the vibratory perturbation frequency. During a use phase, in real time, the frequency of the current disturbance is determined and the correction control law is calculated by using for the Youla parameter the stored coefficients of a determined perturbation frequency corresponding to the current frequency of disturbance.