Determining inventory levels in a CONWIP controlled job shop
Determining inventory levels in a CONWIP controlled job shop
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DOI：
10.1080/07408170008963883
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发表时间：
2000-02
期刊：
影响因子：
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通讯作者：
S. Ryan;B. Baynat;F. Choobineh
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文献类型：
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作者：
S. Ryan;B. Baynat;F. Choobineh
我们扩展的概念，CONCLUSION控制的车间设置，其中多个产品与不同的路线竞争同一组资源。问题是要确定固定的总体服务水平及其对产品类型的分配（服务组合），以满足每种产品类型的统一高客户服务要求。我们制定了一个开放的排队网络模型中，客户订单拉完成的产品从系统中的优化问题。然后，假设大量的需求，我们推导出一个吞吐量的目标，为每种产品类型在一个封闭的排队网络，并提供一个简单的启发式找到一个最小的总吞吐量和混合，将实现接近这个目标的操作吞吐量。在数值例子中，这种方法所建议的组合实现了客户服务的要求，相对较低的总成本。
We extend the concept of CONWIP control to a job shop setting, in which multiple products with distinct routings compete for the same set of resources. The problem is to determine the fixed overall WIP level and its allocation to product types (WIP mix) to meet a uniformly high customer service requirement for each product type. We formulate an optimization problem for an open queuing network model in which customer orders pull completed products from the system. Then, assuming heavy demand, we derive a throughput target for each product type in a closed queuing network and provide a simple heuristic to find a minimum total WIP and WIP mix that will achieve an operating throughput close to this target. In numerical examples, the WIP mix suggested by this approach achieves the customer service requirement with a relatively low total WIP.