基于运行工况传递路径分析和串扰消除的车内噪声分离技术研究

摘要

为有效避免运行工况传递路径分析在进行匀速工况噪声源分离时,轮胎附近测得振动噪声容易受到发动机振动噪声的干扰,导致分离结果不准确的问题,结合串扰消除方法开展了相关研究.建立了运行工况传递路径分析模型,针对某车型的匀速问题,将运行工况传递路径分析方法与串扰消除技术相结合,通过三级细化实现匀速车内噪声的精准划分和声源目标值设定,实现了匀速车内噪声的逐层控制.%In order to effectively avoid the vibration noise measured adjacent to the tire interfered by engine vibration noise, which would lead to incorrect separation in Operation Transfer Path Analysis (OTPA) for noise source separation in constant speed running, relevant research was conducted in combination with a Cross-Talk Cancellation (CTC). An OTPA model was constructed. For the problems incurred during constant speed running of a vehicle model, OPTA and CTC technologies were combined to achieve precise division and acoustic source target value setting of interior noise in constant speed running via three-level refining,thus making layer-by-layer control of interior noise in constant speed running.