有效消除噪音

制动尖叫,制动声学和制动噪声是声学,复杂的现象,影响舒适性和破坏性能。不同车辆的制动系统呈现出不同的声学特性。优质的振动装置是实现静音制动的必要条件。复杂的特征值分析说明在模拟过程中出现了不稳定的操作条件。实验模态分析的结果确保模型能以最大精度进行升级更新。

Polytec 3D扫描振动计有助于有效地分析,测量和可视化制动尖叫。 由此产生的动态3D偏转形状允许基于真实和真实的测量结果(不应用额外的质量)进行深入分析,并对振动制动盘进行相应的实体数据解释。Polytec三维扫描式激光测振仪能通过自下而上的方法验证小型组件,例如制动片。即使在带空调的NVH 测试台进行最终测试时,测量技术仍保持不变。高空间分辨率可记录以啸叫为主要特征的高频模态。非接触式测量技术甚至还能测量热制动片的振动特性,以排除故障和验证模型。

Brake acoustics on the test bench

Here, Polytec 3D Scanning Vibrometers help to efficiently analyze, measure and visualize brake squeal. The resulting, animated 3D deflection shapes allow profound analysis based on real and true measurement results (without applying additional masses) and a correspondingly solid data interpretation of the vibrating brake disc. Polytec’s 3D Scanning Vibrometers enable you to validate even small components such as brake pads for a bottom-up approach. The measurement technique remains the same, even during the final test on the air-conditioned NVH test bench (noise, vibration, harshness). The high spatial resolution records all the high-frequency modes that are characteristic of squealing. Non-contact measuring technology also provides you with reliable data for troubleshooting and model validation even on hot brakes.

Your PolyXpert in Vibrometry