基于数值分析的航空发动机装配系统性能评估

摘要

Aircraft engine assembly system is a kind of complex manufacturing system with characteristics of rework and re-entrant loops. It's difficult to be analyzed by using numerical analysis method unlike Jobshop models and Flowshop models. In this paper,taking the productivity of aircraft engine assembly system as research object,a model of the aircraft engine assembly system is built,a performance evaluation algorithm is proposed based on the overlapping decomposition method to study the throughput of aircraft engine assembly line and compares the results with the discrete event system simulation. The results of numerical experiment show that this algorithm has a high accuracy,can reduce the time of performance evaluation and can estimate the system performance effectively.%航空发动机装配系统是一类比较复杂的装配生产系统，带有工件返件加工和工件可重入等特点，不同于一般的Jobshop和Flowshop的模型，此类复杂的生产系统应用数值分析的方法分析起来比较困难。在文中，以航空发动机装配系统的生产率为研究目标，建立了航空发动机生产系统模型，提出了基于重叠机器分解方法的性能评估算法，并与离散事件仿真结果比较。最后的实验结果表明，该数值分析方法与仿真方法相比具有很高的精确度，大大地缩短了性能评估的时间，能够有效地评估系统性能。