模态参数识别中的激振点和测量点的布局　Ⅰ理论分析

PLACEMENT OF EXCITERS AND SENSORS FOR IDENTIFICATION OF MODEL PARAMETERS THEORETICAL ANALYSIS

测量点和激振点在被识别结构上的布局对于目标模态的准确识别具有很大影响。本文针对目标模态分别是孤立模态和重频模态，讨论了激振点和测量点的布局准则，给出了模态可识别的必要条件和充分条件。

The placement of exciters and sensors in the structure to be identified is of major consideration in the process of the vibration test because it has a considerable effect on the results of identification. In this paper the criterion for placement of exciters and sensors is presented with respect to distinct or repeated modes in frequency respectively. The necessary and sufficient condition under which the vibration modes can be identified is also provided.