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Vibration Analysis Versus Vibration Control

机译：振动分析与振动控制

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Car manufacturing companies and their suppliers allocate significant human and financial resources to NVH-related R&D. While the most advanced instrumentation and analytical techniques are used for these activities, the incremental improvements of NVH are rather small due to extreme complexity of the vehicle systems, to accumulating manufacturing uncertainties, and too many contradictory constraints for design and modifications of the vehicle components and subsystems. NVH improvement by using conceptual approaches for vibration and noise control without in-depth study of mechanisms generating objectionable noise and vibration effects in a particular component or subsystem is often considered as an inferior approach and is used only in critical launch and warranty situations. Development of such vibration and/or noise control "patches" is often relegated to suppliers. The paper illustrates, using case stories, high effectiveness of robust vibration and noise control devices, especially by using system resources and by using TRIZ methodology. Very radical improvements of noise and vibration characteristics have been achieved without extensive analytical efforts and without significant hardware modifications. One section of the paper relates to radical reduction of steering column shake, another to reduction of pass-by noise, the third to vibration isolation, and the forth to enhancing tire damping.
机译：汽车制造公司及其供应商将重要人力和财务资源分配给NVH相关的研发。虽然最先进的仪器和分析技术用于这些活动，但由于车辆系统的极端复杂性，NVH的增量改进是相当小的，以积累制造不确定性，以及用于车辆部件的设计和修改太多的矛盾限制子系统。 NVH通过使用振动和噪声控制的概念方法改善而没有深入研究特定组件或子系统中产生令人讨厌的噪声和振动效应的机制，通常被认为是劣质的方法，并且仅用于关键发射和保修情况。这种振动和/或噪声控制“贴片”的开发通常被降到供应商。本文使用案例故事，鲁棒振动和噪声控制设备的高效力，特别是通过使用系统资源和使用TRIZ方法。已经实现了噪声和振动特性的非常激进的改善，而无需广泛的分析努力，而且没有显着的硬件修改。本文的一部分涉及转向柱抖动的根治性降低，另一个转向柱抖动，另一种通过噪声减少，第三个是增强轮胎阻尼的振动隔离。

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