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NOISE REDUCTION DEVICE, AIRCRAFT, POWER GENERATION DEVICE, NOISE REDUCTION METHOD AND NOISE REDUCTION PROGRAM

机译:降噪装置,飞机,发电装置,降噪方法和降噪程序

摘要

To improve the control effect of active muffling control for rotor blade tip noise.SOLUTION: The noise reduction device according to the present embodiment includes speakers, microphones, and a control signal generator. The speakers are disposed around the rotor and emit control sounds on the basis of control signals. Microphones are disposed around the rotor and collects the control sounds and noise emitted from the rotor and converts them into microphone signals. The control signal generation unit generates the control signals for reducing an acoustic power at positions of the microphones on the basis of the microphone signals, a rotational speed of the rotary blade, and phases of the noise arriving at the microphones from the rotary blade.SELECTED DRAWING: Figure 1
机译:为了提高主动消声控制对转子叶片叶尖噪声的控制效果。解决方案:根据本实施例的降噪装置包括扬声器,麦克风和控制信号发生器。扬声器围绕转子布置,并根据控制信号发出控制声音。麦克风围绕转子布置,并收集从转子发出的控制声音和噪声,并将它们转换为麦克风信号。控制信号生成单元基于麦克风信号,旋转叶片的旋转速度以及从旋转叶片到达麦克风的噪声的相位,生成用于降低麦克风位置处的声功率的控制信号。图:图1

著录项

  • 公开/公告号JP2019053197A

    专利类型

  • 公开/公告日2019-04-04

    原文格式PDF

  • 申请/专利权人 TOSHIBA CORP;

    申请/专利号JP20170177472

  • 发明设计人 GOTO TATSUHIKO;EBATO AKIHIKO;

    申请日2017-09-15

  • 分类号G10K11/178;B64C27/04;B64D33;F03D1/06;F03D7/04;

  • 国家 JP

  • 入库时间 2022-08-21 12:22:37

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