机械与电子2025，Vol.43Issue(10)：42-48,7.
厢式汽车发动机噪声控制方法研究
Research on Noise Control Methods for Box Type Car Engines
摘要
Abstract
A frequency based noise control method was proposed to address the mode mixing problem of engine noise in box type vehicles at secondary sound frequencies.The noise signal was collected through sensors,and modal aliasing was eliminated using continuous wavelet transform and partial coherence analy-sis.The true frequency components were extracted by combining non harmonic Fourier transform,and an adaptive filter was designed to optimize the weights,achieving effective control of engine noise.The experi-mental results show that the proposed method reduces the signal distortion from 2.5％to 0.8％,and the amplitude of sound pressure level reduction is stable and significantly reduced,which is superior to the minimum mean square Virsaria criterion algorithm and tracking differentiator method.It effectively elimi-nates engine noise and has a stable effect.关键词
厢式汽车/发动机/噪声控制/模态混叠/自适应滤波Key words
box type car/engine/noise control/modal aliasing/adaptive filtering分类
计算机与自动化引用本文复制引用
齐焕敏,刘芳芳..厢式汽车发动机噪声控制方法研究[J].机械与电子,2025,43(10):42-48,7.基金项目
杨凌职业技术学院2024年度科研基金项目(ZK24-19) （ZK24-19）
