VEHICLE VIBRATION AND NOISE REDUCTION SYSTEM

摘要

Provided is a vehicle vibration and noise reduction system that allows the stiffness of the suspension system to be varied while ensuring a favorable noise canceling performance under all conditions. A variable elastic member (4) is incorporated in a vehicle suspension system, and a noise control unit (56) causes a canceling sound to be emitted from a loudspeaker (32) according to a reference signal obtained from a strain sensor (31) provided on the variable elastic member and an error signal obtained from a noise detection unit (33) for detecting noises in the passenger compartment of the vehicle. The noise control unit is configured to change a noise canceling property of the noise control unit depending on the elastic modulus of the variable elastic member.

主权项

1. A vehicle vibration and noise reducing system, comprising:
a noise detection unit for detecting noises in a passenger compartment of a vehicle; a canceling sound emitting unit for emitting canceling sound therefrom; a noise control unit for controlling the canceling sound emitting unit so as to cause the canceling sound to cancel the noises by processing an error signal obtained from the noise detection unit; an elastic member interposed in a transmission path of vibrations from a road surface to the passenger compartment of the vehicle; and a strain sensor for detecting strain in the elastic member; wherein the noise control unit is configured to control the canceling sound emitting unit by taking into account the strain detected by the strain sensor.