GOALI: Stochastic Optimization Framework for Energy-Smart Re/Manufacturing Systems

这项学术与工业联络机会奖（GOALI）将通过开发模型来支持制造和再制造生产线的有效整合，为国家福利做出贡献。通过延长产品寿命和减少制造对环境的影响，再制造对可持续生产非常重要。不确定的客户需求，以及产品数量和质量的高度变化，对制造商在新产品和退货产品之间分配生产能力提出了挑战。该项目是路易斯维尔大学、东北大学和IBM公司之间的合作，将考虑生产调度和库存水平、能源影响、需求的不确定性、退货数量和退货质量，以产生一个可扩展到工业规模问题的生产计划。所研究的建模方法有望为这种混合系统的设计、操作和维持方式提供信息，并将提高对制造相关电子废物考虑的认识。该项目将通过开发生产库存管理的最佳实践以及能源消耗和最小化能源足迹的建议，使美国制造业受益。本研究将开发一种新的三阶段随机优化模型，将战术（生产和能源）和作战（库存）决策集成在一个单一的集成框架下。第三阶段的操作决策反映了三个层次的不确定性（需求、退货数量和退货质量）。第二阶段，NP硬服务器到银行的分配问题（在第二阶段）是通过双重打包模型方法解决的。整个解决方案方法采用基于场景的分解框架。整个系统的高保真仿真模型将允许对新方法生成的解决方案进行现实世界策略的基准测试。工业合作伙伴将试点实施基准测试活动中最有希望的政策，这将使研究结果得以转化，并对方法进行微调。该项目通过计算工具（例如，优化、虚拟现实和模拟）和案例研究来补充课堂教学，有助于培训下一代工程师。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This Grant Opportunities for Academic Liaison with Industry (GOALI) award will contribute to the national welfare by developing models to support the efficient integration of manufacturing and remanufacturing production lines. Remanufacturing is important to sustainable production by extending product life and reducing the environmental impact of manufacturing. Uncertain customer demand, along with highly variable product returns in both quantity and quality, have proved challenging to manufacturers in planning to allocate production capacity between new and returned products. The project, a collaboration between University of Louisville, Northeastern University, and IBM Corporation, will consider production scheduling and inventory levels, energy impact, uncertainty in demand, returns quantity, and returns quality to produce a production plan that is scalabile to industry-scale problems. The researched modeling approach is expected to inform the way such hybrid systems are designed, operated, and sustained, and will promote awareness of manufacturing-related e-waste considerations. The project will benefit US manufacturing by enabling the development of best practices for production-inventory management and recommendations for energy consumption and minimization of the energy footprint.This research will develop a novel three-stage stochastic optimization model that integrates tactical (production and energy) and operational (inventory) decisions under a single integrated framework. The third-stage operational decisions reflect three levels of uncertainty (demand, returns quantity, and returns quality). The second-stage, NP hard server-to-bank allocation problems (in the second stage) is addressed through a dual bin-packing model approach. The overall solution approach employs a scenario-based decomposition framework. A high-fidelity simulation model for the overall system will allow benchmarking of real-world strategies against solutions generated by the new approach. The industrial partner will pilot an implementation of the most promising policy from the benchmarking exercise, which will enable translation of the findings and fine-tuning of the approach. The project contributes to the training of next generation engineers via computational tools (e.g., optimization, virtual reality and simulation) and case studies to complement in-class instruction.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.