...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>SAE International Journal of Passenger Cars - Mechanical Systems >Tire-Road Noise Analysis of On-Road Measurements under Dynamic Driving Conditions
【24h】

Tire-Road Noise Analysis of On-Road Measurements under Dynamic Driving Conditions

机译：动态行驶条件下道路测量中的轮胎噪声分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The powertrain noise of cars has been reduced in the last decades. Therefore in many cases, rolling tires have increasingly become the dominant sources of vehicles' interior noise. For sound design or a reduction of tire-road noise it is important to know the individual noise shares of the tires and their transfer paths. Authentic tire-road noise can only be measured on a real road, not on a roller dynamometer. So far measurements have been performed during a coast-down on the road with the engine switched off, avoiding the influence of engine noise. Operational Transfer Path Analysis (OTPA) can be used to remove the uncorrelated wind noise, and to synthesize structure-borne and airborne tire-road noise based on input signals measured with microphones at the tires and a triaxial accelerometer at each wheel carrier. Simultaneously, the interior noise is recorded by an artificial head. Acceleration, deceleration or other driving maneuvers with the engine running can lead to different tire noises. In this case the conventional method cannot be applied because the engine sound is measured at the source (tires) and receiver locations (cabin). This would lead to incorrect OTPA transfer functions and the tire-road noise synthesis would contain unwanted engine sound shares. Thus, a Cross-Talk Cancellation (CTC) must be carried out between the tire and engine sources. In this paper a new approach is presented allowing for a tire-road noise analysis under dynamic driving conditions. The applied CTC requires additional input signals at the engine.
机译：在过去的几十年中，汽车的动力总成噪音有所降低。因此，在许多情况下，滚动轮胎已越来越成为车辆内部噪音的主要来源。对于声音设计或减少轮胎行车噪声，重要的是要知道轮胎及其传输路径的各个噪声份额。真实的轮胎噪声只能在真实道路上测量，而不能在滚筒测功机上测量。迄今为止，已经在关闭发动机的情况下在道路滑行期间进行了测量，从而避免了发动机噪音的影响。可使用操作传递路径分析（OTPA）消除不相关的风噪声，并根据轮胎上的麦克风和每个车轮架上的三轴加速度计测量的输入信号，合成结构传播的和空中传播的轮胎道路噪声。同时，内部噪音由人造头记录。发动机运转时的加速，减速或其他驾驶操作可能导致不同的轮胎噪音。在这种情况下，由于发动机声音是在源（轮胎）和接收器位置（机舱）处测量的，因此无法应用常规方法。这将导致不正确的OTPA传递函数，并且轮胎路面噪声合成将包含有害的发动机声音份额。因此，必须在轮胎和发动机源之间进行交叉对话取消（CTC）。在本文中，提出了一种新方法，可以在动态驾驶条件下进行轮胎噪声分析。所应用的CTC需要发动机处的其他输入信号。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号