论文标题

朝着稳健的制造计划:随机的工作股计划

Toward Robust Manufacturing Scheduling: Stochastic Job-Shop Scheduling

论文作者

Bragin, Mikhail A., Wilhelm, Matthew E., Yu, Nanpeng, Stuber, Matthew D.

论文摘要

制造业在经济发展,生产,出口和创造就业中起着重要作用,最终有助于改善生活质量。但是,制造缺陷的存在是不可避免的,导致产品被丢弃,即废弃。在某些情况下,有缺陷的产品可以通过返工来修复。废料和返工会导致更长的完成时间,这可能会导致订单迟到。此外,不确定性和组合复杂性的存在显着增加了复杂制造计划的难度。本文解决了这一挑战,这是关于在低容量,高差异制造环境中的随机工作娱乐节目计划的案例研究的例证。为了确保准时交货,需要高质量的解决方案,并且必须在严格的时间限制内获得近乎最佳的解决方案,以确保在工作店的地板上平稳操作。为了有效地解决随机的就业机会调度(JSS)问题,最近开发的基于级别的“基于级别”的“ Lagrangian放松”用于减少计算努力,同时有效利用Polyak步骤化的几何收敛潜在的潜在,从而导致了快速的融合。数值测试表明,与商业求解器相比,新方法的两个数量级。

Manufacturing plays a significant role in economic development, production, exports, and job creation, which ultimately contribute to improving the quality of life. The presence of manufacturing defects is, however, inevitable leading to products being discarded, i.e. scrapped. In some cases, defective products can be repaired through rework. Scrap and rework cause a longer completion time, which can contribute to orders being shipped late. Moreover, the presence of uncertainties and combinatorial complexity significantly increases the difficulty of complex manufacturing scheduling. This paper tackles this challenge, exemplified by a case study on stochastic job-shop scheduling in low-volume, high-variety manufacturing contexts. To ensure on-time delivery, high-quality solutions are required, and near-optimal solutions must be obtained within strict time constraints to ensure smooth operations on the job-shop floor. To efficiently solve the stochastic job-shop scheduling (JSS) problem, a recently-developed Surrogate "Level-Based" Lagrangian Relaxation is used to reduce computational effort while efficiently exploiting the geometric convergence potential inherent to Polyak's stepsizing formula thereby leading to fast convergence. Numerical testing demonstrates that the new method is two orders of magnitude faster as compared to commercial solvers.

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