EP 0693747 A2 19960124 - An apparatus for cancelling vibrations
Title (en)
An apparatus for cancelling vibrations
Title (de)
Anordnung zur Schwingungsunterdrückung
Title (fr)
Dispositif pour supprimer des vibrations
Publication
Application
Priority
- GB 9414484 A 19940718
- GB 9415763 A 19940804
Abstract (en)
An apparatus for cancelling vibrations comprising: means for providing a reference signal representative of the vibrations to be cancelled; filter means (5) comprising means (13) for resolving the reference signal into its frequency components, means (15) for applying weights to these frequency components, and means (17) for combining the weighted frequency components to provide an output signal of said filter means (5); and actuator means (1) responsive to said output signal to produce vibrations which destructively interfere with the vibrations to be cancelled, said means (13) for resolving utilising N updates of said reference signal to resolve it into its frequency components, said means (13) for resolving being updated by n times between successive resolutions of the reference signal into its frequency components where 1<n<N, there being a correlation between the weights applied by said means (15) for applying so as to reduce discontinuity in the operation of said filter means (5). <MATH>
IPC 1-7
IPC 8 full level
F16F 15/02 (2006.01); G05D 19/02 (2006.01); G10K 11/16 (2006.01); G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17817 (2017.12 - EP US); G10K 11/17854 (2017.12 - EP US); G10K 11/17857 (2017.12 - EP US); G10K 11/17881 (2017.12 - EP US); G10K 11/17883 (2017.12 - EP US); G10K 2210/1281 (2013.01 - EP); G10K 2210/3018 (2013.01 - EP); G10K 2210/3025 (2013.01 - EP); G10K 2210/3042 (2013.01 - EP); G10K 2210/3045 (2013.01 - EP); G10K 2210/3051 (2013.01 - EP)
Citation (applicant)
- GB 2054999 A 19810218 - NAT RES DEV
- EP 0043565 A1 19820113 - HITACHI LTD [JP]
- GB 2107960 A 19830505 - CHAPLIN GEORGE BRIAN BARRIE
Designated contracting state (EPC)
DE ES FR GB IT NL SE
DOCDB simple family (publication)
EP 0693747 A2 19960124; EP 0693747 A3 19971229; CA 2154027 A1 19960119; JP H0883086 A 19960326
DOCDB simple family (application)
EP 95304332 A 19950621; CA 2154027 A 19950717; JP 18026295 A 19950717