三维空腔声学模态试验的潜在误差分析

Potential Error Analysis of 3 D Cavity Acoustic Modality Test

探讨三维空腔声学模态试验技术的方法及其潜在误差。一种与结构模态分析相似的试验方法可以被发展用于三维空腔声学模态分析,该方法使用空间距离靠近的两个传声器测量声学粒子加速度向量分量。除了标准声学测量和标定硬件外只需使用很少或者不需要其它设备就能够完成,但是首先需要理解对测量精度的限制。

The potential error and technical method of 3D cavity acoustic modality test is discussed. A kind of testing method similar to structural modality analysis can be applied to 3D cavity acoustic modality analysis. Two microphones with near space distance is used to measure the particle acceleration vector component. Only a few equipments are needed except standard accoustic measurement and calibrated hardware in this measuring method.