首页> 外国专利> COMPLEX PROCESS FOR ON-LINE IDENTIFICATION OF MECHANICAL FAULTS IN ELECTROMECHANICAL IMPEDANCE SPECTROSCOPY WHILE PREVENTING FALSE DIAGNOSIS

COMPLEX PROCESS FOR ON-LINE IDENTIFICATION OF MECHANICAL FAULTS IN ELECTROMECHANICAL IMPEDANCE SPECTROSCOPY WHILE PREVENTING FALSE DIAGNOSIS

机译:防止错误诊断时,机电阻抗谱中机械故障在线识别的复杂过程

摘要

The invention relates to a system and a method for identifying faults of mechanical origin in metallic or composite structures. According to the invention, the system comprises a structural block consisting of the structure to be monitored and a number of piezo-active sensors, distributed at a predetermined range, an acquisition block comprising a programable analogue multiplexer which successively couples the active sensors at the input of an electromechanical impedance analyzer within the acquisition block, a software and warning block comprising a computer unit and a display/warning block, the computer unit receiving data (Re Z(ω)) from the electromechanical impedance analyzer, with a view to processing them and establishing wether the number of resonance peaks for the data (Re Z(ω)) in a given frequency range, increases as compared with the initial number determined in reference conditions.
机译:本发明涉及一种用于识别金属或复合结构中的机械起源故障的系统和方法。根据本发明,该系统包括结构块,该结构块包括要监视的结构和在预定范围内分布的多个压电有源传感器,采集块包括可编程模拟多路复用器,该可编程多路复用器在输入端连续耦合有源传感器。采集模块中的机电阻抗分析仪的结构,包括计算机单元和显示/警告模块的软件和警告模块,该计算机单元从机电阻抗分析仪接收数据(Re Z(ω)),以进行处理与在参考条件下确定的初始数量相比,确定给定频率范围内数据(Re Z(ω))的谐振峰的数量增加了。

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