Global Patent Index - EP 3803152 A1

EP 3803152 A1 20210414 - SYSTEM AND METHOD FOR PASSIVE DAMPING OF MECHANICAL VIBRATIONS

Title (en)

SYSTEM AND METHOD FOR PASSIVE DAMPING OF MECHANICAL VIBRATIONS

Title (de)

SYSTEM UND VERFAHREN ZUR PASSIVEN DÄMPFUNG MECHANISCHER SCHWINGUNGEN

Title (fr)

SYSTEME ET PROCEDE D'AMORTISSEMENT PASSIF DE VIBRATIONS MECANIQUES

Publication

EP 3803152 A1 20210414 (FR)

Application

EP 19742849 A 20190606

Priority

  • FR 1854917 A 20180606
  • FR 2019051368 W 20190606

Abstract (en)

[origin: WO2019234366A1] The invention relates to a system for the passive damping of mechanical vibrations generated by a vibrating structure carried by a support, the system comprising a transducer inserted between the vibrating structure and the support for converting the mechanical energy of the vibrations into electrical energy, characterised in that the transducer comprises a flextensional structure having a first axis and a second axis which are perpendicular to each other, and a stack of piezoelectric elements which is designed to produce electrical energy when it is stressed, said stack being compressively stressed by the flextensional structure along the first axis such that a deformation of said structure modifies the compressive stress applied to said stack, two peripheral attachments are secured to the flextensional structure, each of the attachments being arranged along the second axis, a first attachment being used to secure the flextensional structure to the vibrating structure and a second attachment being used to secure the flextensional structure to the support, at least one of the attachments comprises an elastic suspension, and a shunt is connected to the piezoelectric stack in such a way as to dissipate all or some of the electrical energy produced by the stress applied to said piezoelectric stack.

IPC 8 full level

F16F 15/00 (2006.01); F16F 7/104 (2006.01); H02N 2/18 (2006.01); H10N 30/04 (2023.01); H10N 30/30 (2023.01)

CPC (source: EP US)

F16F 15/007 (2013.01 - EP US); F16F 15/04 (2013.01 - US); H02N 2/181 (2013.01 - US); H02N 2/186 (2013.01 - EP); H10N 30/04 (2023.02 - US); H10N 30/30 (2023.02 - US); F16F 2224/0283 (2013.01 - EP); F16F 2230/34 (2013.01 - EP)

Citation (examination)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

WO 2019234366 A1 20191212; EP 3803152 A1 20210414; FR 3082258 A1 20191213; FR 3082258 B1 20211105; JP 2021527782 A 20211014; US 11963451 B2 20240416; US 2021226116 A1 20210722

DOCDB simple family (application)

FR 2019051368 W 20190606; EP 19742849 A 20190606; FR 1854917 A 20180606; JP 2020568288 A 20190606; US 201916972213 A 20190606