基于过程BOM的经营过程并行化设计方法

将串行活动并行化不仅是经营过程重构和并行工程中的重要问题,也是企业间合作过程设计需要考虑的问题。目前还不能有效地复用AS-IS建模过程中所收集信息的计算机辅助优化/设计方法。本文根据并行工程和企业间合作的特定情况,提出了合理的假设,借鉴BOM的概念,提出了基于过程BOM的并行经营过程计算机辅助优化设计方法,并开发了相应的工具。最后,结合航空CIMS中的案例进行了说明。

经营过程结构优化的研究

实现某特定功能通常存在多种经营过程方案,讨论了如何从备选活动集中选择活动,构建费用最小的经营过程问题。该结构优化问题的决策变量采用了向量表示方法,建立0-1整数非线性规划模型,给出了可行解存在性的判定方法。在分枝定界数值算法中,采用了前向搜索策略,提出了定界算法,讨论了重复解的消除方法,并用示例说明了算法在减小搜索空间上的有效性。

Influence of preload discreteness on air-operated separation process of low-shock separation device

To investigate the influence of design parameters on the performance of separation device,the structure and air-operated test of a low-shock separation device are introduced and analyzed in this paper.According to the law of energy conservation and aerodynamics,a mathematical model is built.Because the preload used to ensure the connection reliability has the discreteness,which will influence the separation process,the influence of preload discreteness on the air-operated separation process is simulated and tested.Simulation results are consistent with the experimental results.It is shown that the change of preload has an obvious influence on the separation process.The study is useful for the design and optimization of separation device.