PROBLEM TO BE SOLVED: To reduce vibration noise generated in a vehicle, while improving traveling performance of an automobile or the like, and/or comfort.SOLUTION: A vehicle vibration noise reduction device includes a loudspeaker (32) which generates canceling sound, and generates optimal canceling sound by use of an adaptive filter (56), on the basis of an error signal detected by a microphone (33) which detects noise in a vehicle. A variable elastic member (4) is arranged in a vibration transmission path from a road surface to the inside of the vehicle. A coefficient of the adaptive filter (56) is optimized in consideration of vibration and strain detected by a strain sensor (31) arranged in the variable elastic member.
【課題】自動車等の走行性能及び又は乗り心地を改善しつつ、車室内に生じる振動騒音を低減する。【解決手段】車両用振動騒音低減装置は、打消音を発生するスピーカ(32)を備え、車室内の騒音を検出するマイクロフォン(33)により検出された誤差信号に基づいて、適応フィルタ(56)を用いて最適な打消音を発生する。路面から車室内への振動の伝達経路中に可変弾性部材(4)を介設し、可変弾性部材に設けられた歪センサ(31)により検出された振動及び歪を考慮して、適応フィルタ(56)の係数を最適化する。【選択図】図1
VEHICLE VIBRATION NOISE REDUCTION DEVICE
車両用振動騒音低減装置
2015-09-24
Patent
Electronic Resource
Japanese
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