Vehicle vibration and noise reduction system
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United States of America Patent
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Apr 25, 2017
Grant Date -
Aug 13, 2015
app pub date -
Feb 9, 2015
filing date -
Feb 12, 2014
priority date (Note) -
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Abstract
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.
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