在生产控制模型APIOBPCS(automatic pipeline,inventory and order based production con-trol system)中,当企业估计的生产时间与实际生产时间不符时,实际库存水平与目标库存水平之间存在一定的偏差。通过在库存反馈环中加入PI(proport...在生产控制模型APIOBPCS(automatic pipeline,inventory and order based production con-trol system)中,当企业估计的生产时间与实际生产时间不符时,实际库存水平与目标库存水平之间存在一定的偏差。通过在库存反馈环中加入PI(proportional plus integral)控制机制,构建了PI-API-OBPCS系统。该系统能够有效地消除库存偏差,但会使生产率和库存水平波动扩大。通过在生产控制环节中加入PD(proportional plus derivative)控制机制,构建了PID-APIOBPCS系统,该系统不仅消除了由生产时间估计误差所造成的库存偏差,而且抑制了生产率和库存水平波动的扩大,可使生产控制系统较快到达平稳状态。展开更多
The decision-making and optimization of two-echelon inventory coordination were analyzed with service level constraint and controllable lead time sensitive to order quantity.First,the basic model of this problem was e...The decision-making and optimization of two-echelon inventory coordination were analyzed with service level constraint and controllable lead time sensitive to order quantity.First,the basic model of this problem was established and based on relevant analysis,the original model could be transformed by minimax method.Then,the optimal order quantity and production quantity influenced by service level constraint were analyzed and the boundary of optimal order quantity and production quantity was given.According to this boundary,the effective method and tactics were put forward to solve the transformed model.In case analysis,the optimal expected total cost of two-echelon inventory can be obtained and it was analyzed how service level constraint and safety factor influence the optimal expected total cost of two-echelon inventory.The results show that the optimal expected total cost of two-echelon inventory is constrained by the higher constraint between service level constraint and safety factor.展开更多
文摘在生产控制模型APIOBPCS(automatic pipeline,inventory and order based production con-trol system)中,当企业估计的生产时间与实际生产时间不符时,实际库存水平与目标库存水平之间存在一定的偏差。通过在库存反馈环中加入PI(proportional plus integral)控制机制,构建了PI-API-OBPCS系统。该系统能够有效地消除库存偏差,但会使生产率和库存水平波动扩大。通过在生产控制环节中加入PD(proportional plus derivative)控制机制,构建了PID-APIOBPCS系统,该系统不仅消除了由生产时间估计误差所造成的库存偏差,而且抑制了生产率和库存水平波动的扩大,可使生产控制系统较快到达平稳状态。
基金Project(71102174,71372019)supported by the National Natural Science Foundation of ChinaProject(9123028)supported by the Beijing Natural Science Foundation of China+3 种基金Project(20111101120019)supported by the Specialized Research Fund for Doctoral Program of Higher Education of ChinaProject(11JGC106)supported by the Beijing Philosophy&Social Science Foundation of ChinaProjects(NCET-10-0048,NCET-10-0043)supported by the Program for New Century Excellent Talents in University of ChinaProject(2010YC1307)supported by Excellent Young Teacher in Beijing Institute of Technology of China
文摘The decision-making and optimization of two-echelon inventory coordination were analyzed with service level constraint and controllable lead time sensitive to order quantity.First,the basic model of this problem was established and based on relevant analysis,the original model could be transformed by minimax method.Then,the optimal order quantity and production quantity influenced by service level constraint were analyzed and the boundary of optimal order quantity and production quantity was given.According to this boundary,the effective method and tactics were put forward to solve the transformed model.In case analysis,the optimal expected total cost of two-echelon inventory can be obtained and it was analyzed how service level constraint and safety factor influence the optimal expected total cost of two-echelon inventory.The results show that the optimal expected total cost of two-echelon inventory is constrained by the higher constraint between service level constraint and safety factor.
