用于模态和NVH试验的三维数字化坐标仪

Automated 3D Coordinate Digitizing for Modal/NVH Testing

声发射 /接收技术用于测定模态试验三维坐标 ,比传统方法节省时间并提高精度。本文介绍声学数字化坐标仪的基本原理 ,并通过汽车整车振动模态实例对两种方法进行比较。

Sound emission/reception technique is employed to measure three dimensional coordinate in modal testing. Compared to traditional approach, the novel technique can save measurement time and increase measurement accuracy dramatically. This paper introduces the principle of the digital sound coordinate positioner, and compares the new technique with traditional one via application to modal testing of a full scale automobile.