The origination, working principles, advantages, recent advances in the research and future research directions of CONWIP(CONsta nt Work In Process) production method are introduced.

介绍CONWIP生产控制方法的产生、工作原理、优点、研究现状及未来的研究方向。

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Problems faced when using CONWIP mechanism in automatic packaging line were discussed. An implementation method using PLC, sensors, and industrial configuration technology was put forward.

讨论了自动包装线实现这种拉式机制所面临的问题，给出了采用PLC、传感器和工业组态技术的实施方法。

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CONWIP integer programming model is built, and its optimization goal is machine setup cost and inventory cost and production flow time. In order to solve this model, the heuristics are provided.

以机床加工准备成本及工件库存成本和加工流动时间为优化目标，建立了CONWIP系统整数规划模型，并提出了求解问题的启发式算法。

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