Fault diagnosis and evaluation method based on weighted grey correlation analysis

The invention relates to a fault diagnosis and evaluation method based on weighted grey correlation analysis. A weighted grey correlation degree evaluation method is adopted, diagnosis results and statistical diagnosis indexes based on various fault diagnosis methods are adopted, weights are obtained through an entropy weight method, the concept of entropy in the information theory is used, the number of effective information is reflected, and the objectivity of comprehensive evaluation is improved. And furthermore, the optimal proximity of various to-be-evaluated diagnosis methods is obtainedby using a grey correlation degree method, the advantages and disadvantages of various methods are quantitatively presented, and the accuracy of an evaluation result is enhanced. 本发明涉及一种基于加权灰色关联度分析的故障诊断评估方法，采用了加权灰色关联度评估方法，基于各种故障诊断方法的诊断结果，统计诊断指标，采用熵权法获得权重，借用信息论中熵的概念，反映了有效信息的多寡，提高了综合评价的客观性；进一步用灰色关联度方法来得到各种待评估诊断方法的最优接近度，定量呈现出各种方法的优劣，增强了评估结果的准确性。