关键词: 飞机, 对接装配, 装配准确度, 小样本, 层次分析法, 主成分分析

Abstract: To achieve rapid feedback of quality information in aircraft automatic join-assembly process, a method of accuracy analysis for airplane of the specific type was proposed. Based on measurement data from laser trackers, accurate assembly of small sample data mining was realized. Several statistical parameters were calculated, through analysis of oversize, relative deviation and error direction towards single measurement point as well as single constraint. Based on the strategy of configuration weights using Analytic Hierarchy Process (AHP), evaluation model of assembly accuracy was derived to reveal join-assembly quality. Simultaneously, verification procedures were implemented based on the abnormal samples'recognition by Principle Component Analysis (PCA) and the significance test of error deviation in normal assumptions. The application results indicated that statistical conclusions could be deduced by this methodology and the objective of the method was to improve assembly process, redistribute error tolerance, generate assembly knowledge, and enhance assembly accuracy.

Key words: aircraft, join-assembly, assembly accuracy, limited samples, analytic hierarchy process, principle component analysis, abnormal samples