多模型融合故障诊断技术的研究

Multi-model fusion fault diagnosis

随着工程应用的需要 ,基于模型的故障诊断技术已经成为可靠性工程的重要研究内容 .在基于模型的故障诊断技术中 ,定性模型与定量模型各有其优缺点 ,一个实用的系统需要将二者有机地结合在一起 .给出一种由定量模型产生定性模型的方法 .最后给出一个二阶系统的算例 ,说明本方法具有较大的工程实用价值 .

Model based fault diagnosis is very important for reliability engineering to satisfy actual engineering demands. A useful system is needed to combine quantitative and qualtitative models with their respective advantages and drawbacks. A method is proposed to derive a qualitative model from a quantitative model and an example is used to illustrate the effectiveness of this method.