基于故障相关性的调距桨FMECA分析  

Failure Mode,Effect and Criticality Analysis of Controllable Pitch Propeller Based on Fault Correlation

作　　者：戚珩[1] 谢清程[2] 杨文凯[2] 阚树林[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072 [2]中船重工第704研究所,上海200031

出　　处：《机械科学与技术》2014年第3期399-403,共5页Mechanical Science and Technology for Aerospace Engineering

摘　　要：为了提高调距桨的可靠性水平,对调距桨的故障模式、原因及影响进行了定性分析;考虑故障模式之间的相关性,建立了故障传播网络,将决策矩阵与危害性分析方法相融合,对传统的危害度计算方法进行了改进。通过分析局部单元性能退化、失效等故障对系统中其他单元的影响,判定局部单元故障对系统整体的危害程度,克服了现有方法忽略故障相关性分析和故障传播影响的缺陷。In order to improve the reliability level, the failure mode, effect and criticality analysis （FMECA） is performed for a controllable pitch propeller. Fault propagation net is constructed by considering fault correlation. The matrix decision method was incorporated with failure mode, effect and criticality analysis, and the existing crit- icality calculating method was improved and optimized. By analyzing the effect of performance degradation or failure of local cell on other cells of the system, the hazard rating of local cell fault to the entire system was determined. The proposed method overcomes the defect of existing criticality calculating method in which the fault correlation a- nalysis and the fault propagation effects are ignored.

关 键 词：可靠性 故障分析 故障相关性 退化 

分 类 号：TP183[自动化与计算机技术—控制理论与控制工程]