基于案例推理和等价空间的定性/定量混合故障诊断方法  

Qualitative/Quantitative Hybrid Fault Diagnosis Method Based on Case-Based Reasoning and Parity Space

作　　者：任章[1] 李清东[1] 董磊[1] 潘宇雄[1] 孙艳兵[1] 

机构地区：[1]北京航空航天大学飞行器控制一体化技术重点实验室,北京100191

出　　处：《南京航空航天大学学报》2011年第B07期87-90,共4页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金(60874117)资助项目

摘　　要：针对难以获得航天器控制系统的精确模型,采用基于知识的定性故障诊断方法也难以奏效的问题,采取定性/定量混合故障诊断的思路,将基于案例推理和等价空间故障诊断方法有机结合,建立定性/定量混合故障诊断模型,推出一种定性/定量混合故障诊断方法。以航天器姿态控制系统为对象进行故障诊断。验证结果表明,推出的定性/定量混合故障诊断方法能够发挥二者的优势,比任何单独一种方法的诊断效果都好。Because of the special characteristics of spacecraft attitude control system that its precision model is not available and the knowledge-based method is not effective for it, adopting qualitative/quantitative hybrid fault diagnosis and combining the case-based reasoning method with parity space, the qualitative/quantitative hybrid fault diagnosis method based on case-based reasoning and parity space is proposed in this paper. The method is based on building a qualitative/quantitative hybrid fault diagnosis model. The spacecraft attitude control system is taken as an illustrative example, and the result shows that the proposed qualitative/quantitative hybrid fault diagnosis method is more effective than each indi- vidual method.

关 键 词：故障诊断 基于案例推理 奇偶空间 混合模型 

分 类 号：TP306[自动化与计算机技术—计算机系统结构]