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ICRA
1999
IEEE

An Effective Method to Reduce Inventory in Job Shops

13 years 10 months ago
An Effective Method to Reduce Inventory in Job Shops
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 scheduling with a separable structure is presented. By using a synergistic combination of Lagrangian relaxation, dynamic programming, and heuristic methods, good schedules are obtained in a reasonable amount of computation time. Results show that the new method can directly control WIP levels while maintaining good ontime delivery performance.
Peter B. Luh, Xiaohui Zhou, Robert N. Tomastik
Added 03 Aug 2010
Updated 03 Aug 2010
Type Conference
Year 1999
Where ICRA
Authors Peter B. Luh, Xiaohui Zhou, Robert N. Tomastik
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