齿轮传动结构的频谱复杂，包含啮合频率及其谐频、以啮合频率谐频为载波频率，轴转频为调制频率的边频带、 追逐齿频率 、鬼线分量以及箱体的固有频率等等，因此，弄清楚齿轮结构的频谱特征对于齿轮结构的nvh诊断尤为重要。本文主要内容包括：

Marposs NVH G-EAR tester, that works on the Single Flank testing principle of one master gear meshing with the component under inspection, is able to detect macro-geometry (nicks, runout etc.) and micro-geometry (gear mesh excitation, ghost orders) defects that are responsible of gear whine and noise phenomena.

The INTRA NVH Gear Analyser achieves in seconds what was previously counted in hours using traditional analytical methods and is ideally suited to the challenges presented by the production environment. This new rapid evaluation of individual gears offers a marked step forward in the gear manufacturing world.

变速箱的NVH问题中，有两块非常重要的内容：敲击(rattle)和啸叫(whine)。 两者都属于SBN(Structure Born Noise)，但是其机理又有不同。 本文将就两者的特征，机…

Our component-level testing simulates the NVH levels that an individual helical gears and spur gears will experience at the system level. Simulated loads are used to mimic the stresses placed on an individual gear, and a noise signature is created for that gear.

2017年11月1日 · The NVH (Noise, Vibration and Harshness) multi-objective optimization aims to find the gear macro and micro-geometry parameters that minimize the excitations generated by the meshing process under the operating conditions, respecting wear conditions, and taking into account the robustness of the solutions to the manufacturing errors.

2015年6月1日 · Expert response provided by Robert Winfough: When evaluating a gear system for noise, vibration and harshness (NVH) regardless of the type of gear box, one will have design requirements of interest. Noise and vibration are often set by subjective feel and then converted to an engineering unit.

2024年12月12日 · Understanding automotive noise, vibration and harshness (NVH) and methodologies for total in-vehicle noise presupposes relatively large, internal combustion (IC) contributions, compared to gear noise.

马波斯NVH G-EAR齿轮检测设备采用 单齿面 检测原理，在检测中，一个标准齿轮与一个被测齿轮啮合，可检测 宏观几何 （毛刺、跳动等）和 微观几何 （齿轮主倍阶，鬼阶）所导致的 齿轮啸叫 和 噪声 问题。 能够实现 高扭矩 和 高转速，并能在测试过程中随意调整，这是该应用的主要优势之一，因此，可在与最终电驱几乎相同的工作条件下检测齿轮。 采用坚固的 花岗岩 床身，马波斯NVH齿轮检测设备拥有优异的抗外部干扰性能，以及高度可配置化软件，这使马波斯NVH齿 …

2023年8月1日 · Gearboxes are very complex structures with many moving components. In this case study, an example of how to study the NVH of the gearbox is presented. The main source of vibrations is coming from the imbalance of gears and shafts.