The fault diagnosis system is classed into data fusion level module, feature level module and decision fusion level module according data fusion method.

将故障诊断系统按数据融合的方法分为数据级融合模块、特征级融合模块和决策级融合模块。

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The feature level module adopts RBF neural network to extract feature of data and to make feature fusion.

特征级融合模块采用RBF神经网络，其功能是提取数据特征进而特征信息融合。

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According to the fusion levels, there are data level, feature level, decision level included in data fusion.

从融合的层次结构出发，数据融合技术可分为数据级、特征级和决策级三个融合层次。

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