Fault diagnosis based on trend analysis and SDG
基于趋势分析和SDG模型的故障诊断

Fault diagnosis based on trend analysis is affected by data,while the one based on signed directed graph(SDG)is difficult to model and infer.The combination of both in order to improve the effect of fault diagnosis has not been considered yet.The trend information of trend analysis is compared with the node information of SDG,which shows that they complement each other.Then trend analysis is applied to SDG modeling,and the fault diagnosis based on trend analysis is modified with corresponding SDG.So the new data-driven and model-based method of fault diagnosis is built.The example of continuous stirred-tank reactor(CSTR) illustrates the veracity and accuracy of fault diagnosis based on trend analysis and SDG.