公开(公告)号：US06668651B2

公开(公告)日：2003-12-30

申请号：US09926752

申请日：2001-12-12

申请人： Pierre Jean Emile Beausseroy ,  Jean-louis Eyraud ,  Régis Léo Marie Jean Lengelle

发明人： Pierre Jean Emile Beausseroy ,  Jean-louis Eyraud ,  Régis Léo Marie Jean Lengelle

IPC分类号： G01N2906

CPC分类号： G01H1/006 ,  F01D21/003 ,  F05D2260/83 ,  F05D2270/334

摘要： Stationary sensors are used to measure periodically the vibratory motions of portions of a body spinning in front of them, such as blades, and to try to determine their natural frequencies by spectral analyses. The sensors are collected together in several networks of different numbers and the determination includes a comparison of the spectra of the different networks via different operations of selection and rejection of lines. The process appreciably pushes back the limit of unambiguous frequency detection.

摘要翻译： 固定传感器用于周期性地测量在其前面旋转的身体部分（例如叶片）的振动运动，并尝试通过光谱分析确定其固有频率。 传感器在不同数量的几个网络中收集在一起，并且确定包括通过线路的选择和拒绝的不同操作来对不同网络的频谱进行比较。 该过程明显地推回了明确的频率检测的极限。