Patent ID: 8708115
Filing Date: 2014-04-29
Classification: F16F

Abstract:
1. A device for damping vibration in a structure, comprising: at least one damper mass for absorbing vibrations originating in the structure operationally linked to the structure by an elastic damper and a member disposed between the elastic damper and the structure; at least one actuator for changing stiffness of the elastic damper; an electrical power source including a coil system and a magnet for generating a magnetic field for generating electrical power exclusively from oscillations between the elastic damper and the structure; a regulating unit, connected to the electrical power source, for activating the least one actuator as a function of vibrations of the structure, based upon a vibration damping rule; a mechanical stop positioned along the member, on which one end of the spring is supported and an opposite end of the spring is operationally linked to the at least one actuator which is longitudinally movable relative to the member; and wherein the at least one damper mass is bidirectionally deflectable by the oscillations along an axis of the member; the elastic damper comprises a spring controlled by the at least one actuator; and the coil system is movable along the axis of the member in the magnetic field to generate the electrical power, the coil system is integrated into the mechanical stop, and the magnet is integrated into the at least one damper mass.