摘要
由于设备系统的复杂性、设备故障的随机性,备件的需求难以准确确定,相关费用也难以做出准确评估,从而使得备件这一类库存控制问题变得相当复杂。基于备件的需求量与设备使用周期密切相关这一关键点,从设备的整个使用周期入手,结合设备的使用情况,在备件需求率随时间变化的情况下,对备件库存控制问题进行了研究,建立了在设备整个使用周期内使备件总订货成本和存储费用最低的数学模型,给出了备件最佳订货次数、订货时间和订货批量的计算公式。最后给出了一个算例以证明模型的实用性。
The demand rate of spare part is usually variable because of the complexity of equipment system and the stochastic malfunction of equipment. Considering the high correlation between quantity demand of spare parts and life of equipment, this paper offers an inventory model to determine the times of order, reorder point and quantity of spare parts during the whole life of equipment on condition that the demand rate of spare parts changes with time while the total cost of ordering and stocking is lowest. Finally, a case based on this model is presented ; Results indicate that optimal times, date and quantity of ordering can be got when the model is used.
出处
《工业工程》
2007年第3期67-70,共4页
Industrial Engineering Journal
基金
国家自然科学基金资助项目(70372047)
关键词
设备使用周期
备件
库存控制
life of equipment
spare parts
inventory control
