为进一步提高综合故障诊断的可靠性,提出一种基于模糊信息多级融合的故障诊断方法,在传统模糊信息融合故障诊断的基础上,将各级诊断数据重新融合后再进行系统的综合故障诊断.对船舶主动力系统故障诊断的应用表明,该方法较传统方法更准确有效,在局部传感器误检的情况下仍作出了准确的故障诊断,可为提高大型系统故障诊断的可靠性提供有益的借鉴. In order to further improve the reliability of the integrated fault diagnosis, a fault diagnosis method based on multi-level fuzzy information fusion is proposed. Based on the traditional fuzzy information fusion fault diagnosis, the diagnostic data of all levels are re-fused before the system’s comprehensive fault diagnosis The application to the fault diagnosis of the ship main power system shows that this method is more accurate and effective than the traditional method and still makes an accurate fault diagnosis under the condition of local sensor false detection, which can provide useful information for improving the reliability of large - scale system fault diagnosis Learn from