JIT订购系统中的敏捷控制

Katsuhiko Takahashi, N. Nakamura
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引用次数: 23

摘要

作为多阶段生产库存系统的准时制(JIT)订货系统,看板系统和它的替代方案——并行订货系统都被提出。针对这两种JIT订货系统,提出了响应式JIT订货系统,该系统可以根据不稳定的需求变化来调整缓冲区大小。为了实现JIT订货系统的敏捷控制,除了调整缓冲区大小外,还提出了在看板订货系统和并行订货系统之间切换订货系统的方法。在该系统中,对需求的时间序列数据进行监测,利用指数加权移动平均图检测到需求的不稳定变化时,考虑切换订单释放系统和调整缓冲区大小。通过不稳定条件下的仿真实验,分析了该系统的有效性。从这些仿真实验中可以清楚地看出,所提出的系统能够对需求的不稳定变化做出反应,并满足需求的平均等待时间的要求。此外,为了达到所需的水平,所提出的系统必须比以前的系统拥有更少的在制品库存,而以前的系统只调整缓冲区大小,不切换订购系统。
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Agile control in JIT ordering systems
As a just‐in‐time (JIT) ordering system for multi‐stage production inventory systems, both the kanban system and its alternative, the concurrent ordering system, have been proposed. For both JIT ordering systems, the reactive JIT ordering systems that adjust the buffer size responding to unstable changes in demand were proposed. In addition to the adjustment of buffer size, switching ordering systems between the kanban system and the concurrent ordering system is proposed in order to realize agile control in JIT ordering systems. In the proposed system, the time series data of demand is monitored, and switching the order release systems and adjusting the buffer size are considered when an unstable change in demand is detected with the exponentially weighted moving average charts. The effectiveness of the proposed system is analyzed using simulation experiments under unstable conditions. From these simulation experiments, it is clear that the proposed system can react to unstable changes in demand and satisfy the required level for the mean waiting time of demand. Also, to attain the required level, the proposed system must possess much less work‐in‐process inventories than the previous systems which adjust only the buffer size and do not switch ordering systems.
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来源期刊
International Journal of Agile Systems and Management
International Journal of Agile Systems and Management Multidisciplinary-Multidisciplinary
CiteScore
2.70
自引率
0.00%
发文量
6
期刊介绍: The objective of IJASM is to establish an effective channel of communication between academia, industry and persons concerned with the design and development of systems. Change is eternal and perpetual, irrespective of type of system. Systems created in the course of the advance of human civilization need to be functionally and operationally sustainable amid changes in technological, political, socio-economical, financial, cultural and other environmental challenges. IJASM aims to promote and harmonize knowledge developments in the emerging fields of agile systems research, sustainability and vulnerability analysis, risk assessments methodologies, complex systems science, e-organisation and e-supply chain management, with emphasis on the international dimension, particularly breaking cultural barriers, and on national contexts, globalisation and new business practices. As such, we aim to publish papers presenting new research, innovative theoretical approaches, changes in agile management paradigms, and action (both examples of successes and failures as long as there are important lessons to be learned) from leading scholars and practitioners. Papers generally fall into two broad categories: those grounded in theory and/or papers using scientific research methods (e.g., reports of original empirical studies, models, critical reviews of existing empirical research, theory pieces that clearly extend current thinking); and those focusing on innovative agile approaches that are based on well reasoned extensions of existing research, experiential knowledge, or exemplary cases (e.g., thought pieces, case studies, etc).
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