DEVICE FOR THE ACTIVE DAMPING OF THE VIBRATIONS EXPERIENCED BY A FRAGILE PART OF MOVING EQUIPMENT, WITH AUTONOMOUS POWER SUPPLY

摘要

A device is dedicated to damping vibrations for an item of equipment (I) intended to be moved around and comprising a structure (S1, S2) to which are coupled a first element (E1) and a second fragile element (E2) that is to be protected from the vibrations. This device comprises: i) first piezoelectric transducer means (T11-T13) inserted between the structure (S1, S2) and the first element (E1) and tasked with converting the mechanical energy of vibration of the structure into electrical energy; ii) at least one sensor (C1-C3) coupled to the structure (S1, S2) and designed to deliver measurement signals representative of vibrations experienced by the equipment (I); iii) control means (MC) electrically powered by the electrical energy produced and tasked with deducing from each measurement signal at least one amplitude of movement that is intended to at least partially compensate for the vibrations experienced by the structure, and with delivering control signals representative of each determined amplitude; and iv) second piezoelectric transducer means (T21-T23) inserted between the structure (S1, S2) and the second element (E2) and tasked with converting the control signals into movement(s) so as to at least partially damp, for the benefit of the second element (E2), the vibrations to which the equipment (I) is subjected.