A study on lot-size dependence of the energy consumption per unit of production throughput concerning variable lot-size
A study on lot-size dependence of the energy consumption per unit of production throughput concerning variable lot-size
复制标题
可变批量下单位产量能耗的批量依赖性研究
DOI：
10.1299/jamdsm.2019jamdsm0062
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
M. Yamaguchi
中科院分区：
文献类型：
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作者：
H. Hibino;Takamasa Horikawa;M. Yamaguchi
近年来，为了在保持生产线生产率的同时降低能耗，工业需要同时考虑这些方面的预评估方法和生产管理方法。在制造系统规划过程中，已经提出了一种既考虑生产率又考虑能耗，同时计算生产率和能耗的预评价方法。此外，利用考虑生产率和能耗的生产管理方法，推导并验证了单位生产能力能耗的批量依赖关系。另一方面，由于消费者的需求变得更加多样化，因此开发了批量定制或高混合、小批量的制造系统，其中批量大小不等。我们将批量不变的条件定义为“固定批量”，而将批量变化的条件定义为“可变批量”。我们定义了在一定的连续生产时间内，批量不是恒定的可变批量。然而，考虑可变批量的生产管理方法还没有开发出来。因此，对于不同的批量，我们提出了单位生产量能耗与批量的关系公式。这个公式的关键参数是平均批量，因为吞吐量和单位生产吞吐量的能耗与批量分布无关。我们还利用离散事件模拟进行了案例研究，以验证所提出的公式。
Recently, in order to reduce energy consumption while maintaining productivity in lines, industries require preevaluation methods and production management methods that consider these aspects simultaneously. A preevaluation method that considers both productivity and energy consumption and simultaneously calculates productivity and energy consumption during the planning of a manufacturing system has already been proposed. In addition, with production management methods that consider productivity and energy consumption, the lotsize dependence of energy consumption per unit of production throughput has been formulated and verified. On the other hand, because the needs of consumers have become more diverse, mass customized or high-mix lowvolume manufacturing systems, in which lot sizes vary, have been developed. We defined the condition in which lot size is not varied as “constant lot-size”, whereas the condition in which lot size is varied as “variable lotsize”. We define the variable lot-size that lot sizes are not constant during a certain continuous production time. However, production management methods that consider variable lot size have not developed. Therefore, we propose a formulation for the lot size dependence of the energy consumption per unit of production throughput for variable lot sizes. The key parameter of this formulation is the average lot size, as the throughput and energy consumption per unit of production throughput are independent of the lot size distribution. We also carry out case studies using a discrete event simulation to verify the proposed formulation.