基于D_S证据理论的数据融合技术在故障诊断中的应用研究

Introduced the basic principles and methods of D_S evidence theory applied in multi-sensor data fusion, and proposed to use it in fault diagnosis. Since the fact that the complexity of the algorithm would increase with the amount of the sensors, a multi-level diagnostic model which is based on D_S evidence theory with pairwisely fused sensors is proposed. An example is indicated, the fusion process of the diagnostic information is elaborated in details. The results indicate that the model algorithm is easy to use and can improve the accuracy and reliability of fault diagnosis.