摘要
针对传统面向机加或装配建模与仿真割裂了两者之间协作关联生产的问题,研究精益生产模式下综合机加与装配的混合生产系统建模与仿真技术。引入齐套工位的概念,建立统一的工艺描述数据结构,解决机加与装配生产衔接的关联定义问题;以车间—工位—设备的层次化结构及其关联关系为基础,构建车间层、工序/工位/齐套层和设备层,以及面向组合生产的批处理逻辑控制器,定义控制器之间的协作接口关系,建立模块化的建模元件库;采用物理模型和控制器模型分离的策略,通过实际车间布局元素与控制器之间的映射关联,实现工艺和布局数据驱动的生产系统自动建模;采用将生产系统的运行映射为控制器之间交互协作的方法,提出任务数据驱动的层次化和模块化的仿真运行控制机制,实现基于设备、队列以及生产对象仿真运行事件的统计分析,为基于仿真的优化决策提供了支持。结合某研究所的混合生产系统,通过生产任务投产时间安排的对比统计分析案例表明,该技术能够有效支持数据驱动的机加与装配混合生产系统的快速、柔性建模与仿真,为精益生产提供了决策分析手段。
In view of the problem of collaborative production relationship between machining or assembly isolated by the separately modeling and simulation for each production system,the modeling and simulation technology oriented to machine-assembly combined production system,which supports the JIT （just-in-time） production pattern,is put forward.By importing the concept of the integrity assembly work station,the unified process description data structure for the combined production system is proposed and the collaborative production relationship between the machining and assembly is defined.Based on the hierarchical and interaction architecture of the workshop-work station-equipment,the modular modeling library embodied as the logic controller,corresponding with each level of the architecture,is constructed,and the lot-sizing process logic controller is also derived in order to reflect practice of the portfolio production.By utilizing the separation strategy between the physical model and control blocks,the layout and process data-driven rapid modeling methodology is brought forward on the basis of the mapping between the layout element and logic controllers.The task data-driven,hierarchical and modular simulation control mechanism is presented under the guidance of mapping methodology between the practical operation of the production system and the collaborating interaction among logic controller.The statistics of the equipment,queue and product driven by the simulation event is gathered and can support the optimization decision based on simulation.The optimization planning case of the task＇s production release time based on comparative analysis with such practical combined production system in a research institution shows that data-driven modeling and simulation technology can effectively be used for lean production decision.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2010年第19期155-164,共10页
Journal of Mechanical Engineering
基金
国防基础研究资助项目(B0820060396)
关键词
精益生产
混合生产系统
齐套工位
数据驱动建模
逻辑控制器
层次化仿真
Lean production Combined production system Integrity assembly work station Data-driven modeling Logic controller Hierarchical simulation
