The invention discloses a fault mode and
impact analysis method of modularized
system design. The fault mode and
impact analysis method can be used for reliability analysis and evaluation of modularized electronic
product system design. The method comprises the following steps: 1, describing the
system fault mode; 2, determining judgment levels of fault risk factors; 3, generating primary fault mode
risk ranking; 4, establishing a stratification analysis
model graph; 5, transforming the analysis
model graph into an analysis model matrix; 6, calculating the analysis model matrix, and obtaining a fault mode correction vector; 7, using the fault mode correction vector for correcting the primary fault mode
risk ranking, obtaining
system fault mode
risk ranking, and finding the fault mode with high risk according to the
ranking. By means of the fault mode and
impact analysis method of the modularized systematic design, it is convenient for a user to achieve dynamic analysis and accurate analysis on the reliability of the modularized electronic
product system design at an early stage of the modularized electronic
product system design, system weak links are found, and the basis for making improvement measures is provided.