Controlling JIT item production via kanban cards
    1.
    发明公开
    Controlling JIT item production via kanban cards 有权
    Steuerung der JIT-FertigungüberKanban-Karten

    公开(公告)号:EP2469366A1

    公开(公告)日:2012-06-27

    申请号:EP10197022.6

    申请日:2010-12-27

    IPC分类号: G05B19/418

    摘要: The present invention provides a method and system for controlling JIT item production via kanbans in a discrete manufacturing production system, wherein items are transformed according to a flow shop comprising a raw material buffer (B RM ) followed by a sequence of production pairs (W 1 ,B 1 ; W j ,B j ; W N ,B N ) comprising one workstation (W j ) and its assigned buffer (B j ); the invention comprising:
    a) for each production pair (W j ,B j ), for each specific item type and at given points in time, providing a local buffer threshold parameter denoting the desired safety stock of the items of the specific type in the buffer;
    b) for each production pair (W j ,B j ), for each specific item type and at other given points in time, providing a global demand threshold parameter denoting the quantity of items of the specific item type required along the downstream process to satisfy the estimated demand;
    c) at each production pair (W j ,B j ), whenever a kanban associated to an item of a specific type switches status, assigning to it one of four priority levels indicating the priority level of the production request of the associated item type, according to the given logical rules by comparing buffer levels with the local buffer threshold parameter and with the global demand threshold parameter;
    d) at each production pair, producing an item of a type whose priority level is the highest according to a given priority model.

    摘要翻译: 本发明提供了一种用于在离散制造生产系统中通过kanbans控制JIT项目生产的方法和系统,其中项目根据包括原料缓冲器(B RM),随后是生产对序列(W 1 ,B 1; W j,B j; W N,BN),包括一个工作站(W j)及其分配的缓冲器(B j); 本发明包括:a)对于每个特定项目类型和在给定时间点的每个生产对(W j,B j),提供表示特定类型的项目的期望安全库存的本地缓冲器阈值参数, 缓冲; b)对于每个生产对(W j,B j),对于每个特定项目类型和在其他给定时间点,提供表示沿着下游过程满足的特定项目类型的项目数量的全局需求阈值参数 估计需求量 c)在每个生产对(W j,B j)处,每当与特定类型的项目相关联的看板切换状态时,向其分配指示相关项目类型的生产请求的优先级的四个优先级中的一个, 根据给定的逻辑规则,通过比较缓冲区级别与本地缓冲区阈值参数和全局需求阈值参数; d)在每个生产对中,根据给定的优先级模型生成优先级最高的类型的项。