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维纳滤波器在燃烧噪声分离中的应用

董阳 张良良 高文志 贺红 付振

董阳, 张良良, 高文志, 贺红, 付振. 维纳滤波器在燃烧噪声分离中的应用[J]. 机械科学与技术, 2023, 42(7): 985-992. doi: 10.13433/j.cnki.1003-8728.20220053
引用本文: 董阳, 张良良, 高文志, 贺红, 付振. 维纳滤波器在燃烧噪声分离中的应用[J]. 机械科学与技术, 2023, 42(7): 985-992. doi: 10.13433/j.cnki.1003-8728.20220053
DONG Yang, ZHANG Liangliang, GAO Wenzhi, HE Hong, FU Zhen. Application of Wiener Filter in Separating Combustion Noise[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(7): 985-992. doi: 10.13433/j.cnki.1003-8728.20220053
Citation: DONG Yang, ZHANG Liangliang, GAO Wenzhi, HE Hong, FU Zhen. Application of Wiener Filter in Separating Combustion Noise[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(7): 985-992. doi: 10.13433/j.cnki.1003-8728.20220053

维纳滤波器在燃烧噪声分离中的应用

doi: 10.13433/j.cnki.1003-8728.20220053
详细信息
    作者简介:

    董阳(1997-), 硕士研究生, 研究方向为发动机燃烧噪声, Dyoung9715@163.com

    通讯作者:

    高文志, 教授, 博士生导师, gaowenzhi@tju.edu.cn

  • 中图分类号: TK402

Application of Wiener Filter in Separating Combustion Noise

  • 摘要: 目前分离内燃机燃烧噪声常用的方法主要有传递函数法、多元线性回归法,这两种方法均将内燃机的总噪声分为燃烧噪声和机械噪声两部分,并且假设实验获得的倒拖噪声为机械噪声,以此达到分离燃烧噪声的目的。然而上述两种方法所得到的燃烧噪声中还包含活塞敲击所形成的间接燃烧噪声。本研究测取了某汽油机转速为4 500 r/min和2 000 r/min转速下多个负荷工况的总噪声、缸压和振动数据,并利用-15~85 ℃A ATDC的时间窗对测量信号进行了截取,基于倒拖法将机械噪声分离。利用缸压信号和燃烧噪声信号构建了维纳滤波器对燃烧噪声进行了滤波,实现了直接燃烧噪声和间接燃烧噪声的分离。计算结果表明该汽油机活塞敲击产生的间接燃烧噪声主要集中于500~8 000 Hz的频率段。
  • 图  1  发动机噪声的形成

    Figure  1.  Formation of engine noise

    图  2  直接燃烧噪声分离示意图

    Figure  2.  Schematic diagram of direct combustion noise separation

    图  3  实验台架测试系统

    Figure  3.  Experimental bench test system

    图  4  4 500r/min转速下缸压频谱

    Figure  4.  4 500 r/min cylinder pressure spectrum

    图  5  2 000r/min转速下缸压频谱

    Figure  5.  2 000 r/min cylinder pressure spectrum

    图  6  4 500r/min转速下不同负荷工况维纳滤波结果

    Figure  6.  Wiener filtering results for different load conditions at 4 500 r/min

    图  7  2 000r/min转速下不同负荷工况维纳滤波结果

    Figure  7.  Wiener filtering results for different load conditions at 2 000 r/min

    图  8  4 500r/min工况下各负荷振动速度频谱计算结果

    Figure  8.  Vibration speed frequency spectrum calculation results under 4 500 r/min load conditions

    图  9  2 000r/min工况下各负荷振动速度频谱计算结果

    Figure  9.  Vibration speed frequency spectrum calculation results under 2 000 r/min load conditions

    表  1  实验汽油机主要参数

    Table  1.   Experimental gasoline engine parameters

    项目 参数
    发动机型式 增压汽油机
    气缸数 4
    排量/L 1.991
    压缩比 11
    点火顺序 1-3-4-2
    下载: 导出CSV
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  • 收稿日期:  2021-07-03
  • 刊出日期:  2023-07-25

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