Determining inventory levels in a CONWIP controlled job shop
نویسندگان
چکیده
منابع مشابه
Total WIP and WIP Mix for a CONWIP Controlled Job Shop
A planning procedure to set the constant level of work in process (WIP) for each product type in a job shop operated under CONWIP control is developed. We model the job shop as a single chain multiple class closed queuing network. Given a specified product mix and a total WIP, a nonlinear program bounds the throughput of the network and optimizes the WIP mix. We identify the minimum total WIP t...
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This paper treats the problem of setting the inventory level of closed-loop flow lines operating under the constant-work-in-process (CONWIP) protocol. We solve a huge but simple linear program that models an entire simulation run of a closed-loop flow line in discrete time to determine a production rate estimate of the system. This new approach has been introduced in Helber et al. (2008) for op...
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Abstract: We develop a constant-inventory tactical planning model for a generic manufacturing system, such as a job shop. The model is based on a discrete-time, continuous flow model developed by the first author. In the model, we assume that we can regulate the release of work to the shop to maintain the constant-inventory constraint. We characterize the conditions for which the shop productio...
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Inventory plays a major role in deciding the overall manufacturing costs, and a good scheduling system should balance the on-time delivery of products versus low work-in-process (WIP) inventory. In this paper, the “CONstant Work-In-Process” (CONWIP) concept is applied to job shop scheduling to effectively control WIP inventory. A new mathematical formulation of CONWIP-based job shop schedulin...
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ژورنال
عنوان ژورنال: IIE Transactions
سال: 2000
ISSN: 0740-817X,1545-8830
DOI: 10.1080/07408170008963883