支持并行工程的造船分段作业计划系统

针对传统造船模式下,车间作业计划与工艺设计串行工作方式的缺点,基于并行工程的原理,提出了分段作业计划与工艺设计的集成运行模式,为实现造船CAPP系统与PPC系统的集成化和并行化提供了实现的基础。针对集成模式的特点,建立了分段作业计划系统资源优化的数学模型,应用遗传算法解决了针对任意分段装配工艺方案的多资源平衡优化问题,可以得到每项作业最优的开工时间,同时能够给出多种资源的最优分布结果,满足了多工艺方案之间资源利用率的比较。最后,给出了计算实例,计算机模拟结果说明了这一方法的有效性。

Block production schedule system for concurrent engineering

The disadvantages of series working relation between computer aided process plan-ning(CAPP) and production planning and scheduling system in the traditional shipbuilding model were analyzed,and the concurrent work method of block assembly planning and process scheduling was presented based on the concurrent engineering theory.The integrating method improves the dynamic property of CAPP and the stability of PPC for shipbuilding system.In accordance with the feature of the proposed method,a mathematical model was built up on the resource leveling problem for block scheduling system in shipbuilding.The problem was solved by the adoption of the genetic algorithms(GAs) technique in multiple resources planning optimization,and the results of which satisfy any process planning of a block assembly.On the basis of this,the resource planning optimization in the shortest time was realized,at the same time,key resources distribution in shipbuilding include worker,space,welding equipment and crane was generated.The application example validates the reasonability and the high efficiency of the method.