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首页> 外文会议>SAE Noise and Vibration Conference and Exhibition >Balancing Competing Design Imperatives to Achieve Overall Driveline NVH Performance Objectives
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Balancing Competing Design Imperatives to Achieve Overall Driveline NVH Performance Objectives

机译：平衡竞争设计要求实现整体传动系列NVH性能目标

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摘要

Today's emerging 4-wheel-drive and all-wheel-drive vehicle architectures have presented new challenges to engineers in achieving low driveline system noise. In the meantime there's also a constant pressure from increasingly stringent noise level requirements. A driveline system's NVH (noise, vibration and harshness) performance is controlled by various noise sources and mechanisms. The common noise issues include the axle gear whine, driveline imbalance/run-out, 2nd-order kinematics, engine torque fluctuation, engine idle shake, etc. Unfortunately various design alternatives may improve some NVH performance attributes while degrading others. It is important to balance the requirements for these noise sources to achieve an optimized driveline system NVH. However, very little literature is found on this topic. In this paper, discussions on methodologies in balancing these different driveline NVH requirements are presented. Through FEA studies on example driveline systems, the modal mapping strategies of the driveline system are presented. These system-level requirements can then roll down to component-level technical specifications, such as mounting location arrangement, bushing rates determination, propeller shaft modal placement, joint torsional dynamic compliances, attachment impendence design, etc. An example design process for an optimized driveline system is then presented, which is validated in the vehicle testing.
机译：今天的新兴的4轮驱动和全轮驱动车辆架构对工程师来说，在实现低传动系管系统噪音时呈现出新的挑战。与此同时，来自越来越严格的噪声水平要求，也存在恒定的压力。传动系统系统的NVH（噪音，振动和严格噪声）性能由各种噪声源和机制控制。常见的噪声问题包括轴齿轮，传动系统不平衡/耗尽，2nd订单运动学，发动机扭矩波动，发动机挡块等。不幸的是，各种设计替代方案可以在劣化的同时改善一些NVH性能属性。平衡这些噪声源的要求是实现优化的传动系统系统NVH。但是，在这个主题上发现了很少的文学。在本文中，提出了对平衡这些不同传动系列NVH要求的方法的讨论。通过FEA研究示例驱动线系统，提出了驱动系统的模态映射策略。这些系统级要求可以向组件级技术规格滚动，例如安装位置布置，衬套速率确定，螺旋桨轴模态放置，关节扭转动态促进，附着封闭设计等。优化的传动系列的示例设计过程然后呈现系统，该系统在车辆测试中验证。

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