Patent ID: 8706351
Filing Date: 2014-04-22
Classification: F16F,G10K

Abstract:
1. An active noise cancellation apparatus for actively reducing noise in an interior of a vehicle, the vehicle generating road noise in the interior of the vehicle by causing a plate-like member of vehicle component parts to vibrate, the plate-like member vibrating by vibration input from road surfaces to a wheel being transmitted to the plate-like member, wherein the active noise cancellation apparatus comprises: a reference signal detector mounted on a knuckle for supporting the wheel in at least one vibration transmission path from the wheel to the plate-like member and detecting vibration of the knuckle as a reference signal; a vibration generator mounted on a wheel housing or on a suspension member in the vibration transmission path, the wheel housing connected to the plate-like member and supporting a suspension system, the suspension member connected to the plate-like member and constituting the suspension system, and the vibration generator applying vibration force to the wheel housing or the suspension member; an error signal detector for detecting vibration of the wheel housing or vibration of the suspension member as an error signal or detecting sound in the interior of the vehicle as an error signal; and a controller for controlling the vibration generator based on the reference signal and the error signal so as to reduce the error signal.