Apparatus for cancelling vibration

Details Apparatus for cancelling vibration Apparatus for cancelling vibration

G - Physics

05

D

G05D 19/02 (2006.01) G10K 11/175 (2006.01) G10K 11/178 (2006.01)

Patent

CA 2154027

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).

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