基于有序树模型的故障检测

Fault Detection by Ordered Tree Model

针对分布区域广、结构复杂的系统,提出了有序树模型来实时、有效地实现故障检测。通过分析复杂结构系统的布局特性,构建了有序树模型,实现了对检测数据关联性的有效表示;利用有序树结点间的关联性和传感器的测量值,估算出相应结点的数据计算值;根据相应结点测量值与估计值的关系,推算出管道运行工况,实现对复杂系统故障的检测。通过仿真验证了该方法故障检测的有效性,为系统的维护提供了理论依据。

Ordered tree model for wide‐area distribution and complex structure system are proposed , which can effectivly realize the fault detection in real‐time .Therefore ,the characteristics of complex structure system is andyzed and the ordered tree model is built .Relationship is implemented among tes‐ting data ,using measurement data from sensors and the correlation between orderly tree nodes .Data of the corresponding nodes are calculated according to the relationship between the measured and estimated values of the corresponding nodes .The judgment factors are estimated and fault detection of the complex system is determined .Simulation results demonstrate the proposed method can effectively detect fault and provide the theoretical basis for system maintenance .