南京航空航天大学学报（英文版）2020，Vol.37Issue(6)：903-913,11.
航空自动化装配站位的有效工时分析
Analysis of Effective Working Hours of Automatic Assembly Equipment for Aircraft Assembly Stations
摘要
Abstract
To improve the accuracy of capacity analysis and prediction for the aircraft assembly stations,an approach for calculating the effective working hour (EWH) of automatic assembly equipment is introduced by using the dynamic mixed Weibull distribution(DMWD)model. Firstly,according to the features of aircraft assembling,a DMWD model considering the dynamic reliability of multiple subsystems and their synthetic effects on the whole equipment is established. A typical automatic drilling & riveting machine is selected as the research object,and the dynamic weights of reliability of three subsystems are modeled and solved. Subsequently the unknown parameters of the DMWD model are estimated based on maximum likelihood estimation(MLE)and Newton-Raphson method. Finally,the EWH of an automatic station is defined and modeled by using the solved dynamic reliability function. Based on the experimental study on a real automatic drilling& riveting machine from a wing panel assembly station,it is shown that the proposed DMWD and EWH models could effectively calculate the equipment reliability with full consideration of its multiple subsystems. The DMWD model is more suitable for improving the solution precision of EWH than the traditional three-parameter Weibull distribution.关键词
自动化装备/有效工时/威布尔分布/可靠性Key words
automatic assembly equipment/effective working hours(EWH)/Weibull distribution/reliability分类
航空航天引用本文复制引用
周显新,辛博,巩亚东,李辰..航空自动化装配站位的有效工时分析[J].南京航空航天大学学报（英文版）,2020,37(6):903-913,11.基金项目
Ackowlegements This work was supported in part by the Fundamental Research Funds for the Central Universities (Nos. N170303009, N180703007), China. （Nos. N170303009, N180703007）
