动态系统故障诊断方法的灰色层次评估法

Application of Grey Analytic Hierarchy Process in Evaluation of the Fault Diagnosis Methods of Dynamic Systems

针对动态系统故障诊断方法评估具有多目标、多层次、多关联等特点,在评估中引入灰色系统理论,结合层次分 析法,提出了基于灰关联度分析法的灰色层次评估法.该方法可以充分吸收各类底层指标信息,把评估指标分散的不确定信 息归纳成确切的指标特征值,从而得到较准确、客观的综合评估结果.最后,利用灰色层次评估法对某型歼击机操纵面损伤 故障的3种常用故障诊断方法进行性能评估.实例研究表明,灰色层次评估法是动态系统故障诊断方法评估中的一种可靠 而有效的方法.

Aiming at the fact that the evaluation of the fault diagnostic methods in the dynamic systems have such characteristics as multi-purposes, multi-levels, and multi-relevance, the paper introduces the grey system theory, and suggests a new grey hierarchical evaluating method based on grey relational analysis in combination with AHP. The method can absorb all kinds of sporadic, uncertain information and reduce them to certain value of evaluation indexes, so as to obtain the exact and objective result. In the end, the grey hierarchical evaluating method is used to evaluate the performance of the fault diagnosis methods in the fighter plane' s control surface damage. The experimental research shows that the the grey hierarchical evaluating method is a reliable and efficient method in the evaluation of the fault diagnostic methods in the dynamic systems.