The invention discloses an
assembly deviation interval rapid prediction method based on fuzzy comprehensive evaluation, and belongs to the field of
assembly deviation
interval prediction in the digital
assembly process of
aviation complex structural parts. The method comprises the following steps: constructing a
simulation model of a target assembly body, executing Monte Carlo analysis, and extracting a manufacturing deviation value and an assembly deviation
simulation value of a sampling sample; constructing a manufacturing deviation uncertainty
quantitative model based on an assembly success
rate function, wherein the assembly success
rate function is obtained through probability density function integration and is defined as a
fuzzy membership function; establishing an
evaluation system containing three indexes of'over-small, moderate and over-large ', and calculating an assembly deviation comprehensive evaluation value; constructing a
point cloud mapping model based on the assembly deviation
simulation value of the sample and the assembly deviation comprehensive evaluation value, and fitting an assembly deviation
prediction interval through a linear boundary function; and the accuracy of the
prediction interval is verified through measured data. The method can rapidly and accurately predict the assembly deviation interval, reduces the calculation amount, and reflects the individual difference.