基于互相关算法的飞机导线故障诊断与定位系统设计

Design of Fault Diagnosis and Localization System of Aircraft Wire Based on Cross-correlation Algorithm

摘要:

以飞机导线短路故障和断路故障为研究对象，目的在于寻求一种测试方法能够提高应用时域反射测量原理进行故障诊断与定位的精度。按照实际机场工程应用背景，设计了以便携式工控机为控制核心、以LabVIEW为驱动软件的飞机导线故障诊断与定位系统。根据信号传播特性，提出了基于互相关算法的故障定位方法，消除了系统误差的影响。计算机仿真和实物测试结果表明该系统具有测试过程方便、准确性高的优点，为提高民航机务维修质量具有促进作用。

Abstract:

In order to improve the accuracy received by the short circuit fault and the open circuit fault diagnosis and localization of the aircraft wire based on the time domain reflection measurement principle, a control method is proposed. According to the engineering application background of the actual airport, the wire fault diagnosis and localization system is designed, of which the industrial control computer is the control core and the LabVIEW is the driver software. By making use of the method of the cross-correlation algorithm, the system error is eliminated. The simulation and the experiment results show that the test process is convenient and accurate, which can improve the repair quality of the Chinese civil aviation.