Patent ID: 9648418
Date: 2017-05-09
CPC Classifications: F16F,G10K,H04R

Claim:
1. An active noise cancellation apparatus for actively reducing road noise in an interior of a vehicle generated due to vibration input from road surfaces to wheels, comprising: a plurality of reference signal detectors placed respectively on right and left knuckles for respectively supporting right and left wheels, and detecting, as reference signals, vibrations of the right and left wheels or noises caused by the vibrations of the right and left wheels, respectively; a vibration generator placed on a component part in a vibration transmission path from the wheels to the interior and applying vibration force to the component part; an error signal detector placed on the component part and detecting vibration of the component part as an error signal; and a controller for performing respective adaptive controls based on each of the reference signals and the error signal so as to reduce the error signal, and controlling the vibration generator based on a sum of output values of the respective adaptive controls.