EP 0720144 A1 19960703 - A system for reducing noise due to vibrations in a vehicle
Title (en)
A system for reducing noise due to vibrations in a vehicle
Title (de)
Gerauschverringerungsverfahren hervorgerufen durch Kraftfahrzeug Schwingungen
Title (fr)
Un système pour réduire le bruit dû aux vibrations dans un véhicule
Publication
Application
Priority
IT TO941083 A 19941228
Abstract (en)
An active system for reducing vibrations in the body panels (L) of a motor vehicle comprises piezoelectric actuators (A) fitted on the panels (L) and driven by an electronic control unit (CCR) on the basis of a signal (RPM) indicative of the speed of rotation of the internal combustion engine of the motor vehicle. The system reduces vibrations, and consequently noise, inside the passenger compartment, at the same time enabling the damping elements to be reduced, whilst being of very low cost. <IMAGE>
IPC 1-7
IPC 8 full level
G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17825 (2018.01 - EP US); G10K 11/1785 (2018.01 - EP US); G10K 11/17857 (2018.01 - EP US); G10K 11/17883 (2018.01 - EP US); G10K 2210/1282 (2013.01 - EP); G10K 2210/3033 (2013.01 - EP); G10K 2210/3041 (2013.01 - EP); G10K 2210/3212 (2013.01 - EP); G10K 2210/3217 (2013.01 - EP); G10K 2210/3229 (2013.01 - EP); G10K 2210/32291 (2013.01 - EP)
Citation (search report)
- [Y] FR 2531023 A1 19840203 - PEUGEOT [FR]
- [Y] EP 0479367 A2 19920408 - GEN MOTORS CORP [US]
- [A] EP 0385713 A2 19900905 - SONY CORP [JP]
- [YA] GB 2260874 A 19930428 - MARCONI GEC LTD [GB]
- [A] WO 9217936 A1 19921015 - APPLIED ACOUSTIC RES [US]
- [Y] PATENT ABSTRACTS OF JAPAN vol. 016, no. 129 (M - 1228) 2 April 1992 (1992-04-02)
- [A] S. M. YANG ET AL.: "Vibration suppression with optimal sensor/actuator location and feedback gain", SMART MATERIALS AND STRUCTURES, vol. 2, no. 4, BRISTOL GB, pages 2332 - 239, XP000415226
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
EP 0720144 A1 19960703; IT 1268204 B1 19970221; IT TO941083 A0 19941228; IT TO941083 A1 19960628
DOCDB simple family (application)
EP 95120083 A 19951219; IT TO941083 A 19941228