Expansion of the Suppression Band of a Vibroprotective System by a Feedback Dynamic Damper

The possibility of expanding the suppression band of the forced vibrations of a system with a dynamic vibration damper by introducing active feedback with respect to the relative motion of a vibroprotection object and an inertial mass elastically attached to it is considered. The parameters of the vibration damper are tuned by a fictive change of the attached mass. The synthesis algorithm of the optimal oscillation suppression by the criterion of the minimax value of the amplitude-frequency characteristic of system compliance is proposed. An evaluation of comparative efficiency for the active and passive dynamic suppression of resonant oscillations is performed.