Abstract A workload limit forms an essential part of most order release methods designed for high-variety make-to-order contexts, but this mechanism does not necessarily lead to the lowest possible direct load buffer. To counter this, the Superfluous Load Avoidance Release (SLAR) procedure was developed that avoided the use of a workload limit altogether. SLAR significantly improves performance compared to alternative release methods in the literature but has been criticized for being impractical as it can lead to uncontrolled loads at stations downstream in the routing of an order. This criticism can be overcome by introducing a workload limit. Using simulation, this study shows that introducing a limit to SLAR further reduces the superfluous direct load, specifically during high load periods. This not only controls the load at downstream stations but also yields a further reduction in the percentage of tardy jobs whilst maintaining SLAR's good mean tardiness and shop floor throughput time performance. Meanwhile, introducing an additional load-based trigger further improves mean tardiness performance. These results partly question one of SLAR's original design principles and extend the theory upon which SLAR is built, by linking each of SLAR's two release triggers to periods of low and of high load. Finally, by gaining control over the workload in periods of high load, the practical applicability of SLAR is substantially enhanced.

中文翻译：

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改进多余负载避免释放 (SLAR)：一种新的基于负载的 SLAR 机制

摘要 工作负载限制构成了为多种按订单生产环境设计的大多数订单发布方法的重要组成部分，但这种机制不一定会导致尽可能低的直接负载缓冲区。为了解决这个问题，开发了多余负载避免释放 (SLAR) 程序，该程序完全避免使用工作负载限制。与文献中的替代释放方法相比，SLAR 显着提高了性能，但因其不切实际而受到批评，因为它可能导致订单路由中下游站点的负载不受控制。可以通过引入工作负载限制来克服这种批评。使用模拟，这项研究表明，对 SLAR 引入限制进一步减少了多余的直接负载，特别是在高负载期间。这不仅可以控制下游站点的负载，还可以进一步降低延迟作业的百分比，同时保持 SLAR 良好的平均延迟和车间吞吐量时间性能。同时，引入额外的基于负载的触发器进一步提高了平均延迟性能。这些结果部分地质疑了 SLAR 的原始设计原则之一，并通过将 SLAR 的两个释放触发器中的每一个与低负载和高负载时段联系起来，扩展了构建 SLAR 的理论。最后，通过在高负载时期获得对工作负载的控制，大大增强了 SLAR 的实际适用性。引入额外的基于负载的触发器进一步提高了平均延迟性能。这些结果部分地质疑了 SLAR 的原始设计原则之一，并通过将 SLAR 的两个释放触发器中的每一个与低负载和高负载时段联系起来，扩展了构建 SLAR 的理论。最后，通过在高负载时期获得对工作负载的控制，大大增强了 SLAR 的实际适用性。引入额外的基于负载的触发器进一步提高了平均延迟性能。这些结果部分地质疑了 SLAR 的原始设计原则之一，并通过将 SLAR 的两个释放触发器中的每一个与低负载和高负载时期联系起来，扩展了构建 SLAR 的理论。最后，通过在高负载时期获得对工作负载的控制，大大增强了 SLAR 的实际适用性。