A dynamic advanced planning and scheduling （DAPS） problem is addressed where new orders arrive on a continuous basis. A periodic policy with frozen interval is adopted to increase stability on the shop floor. A gene...A dynamic advanced planning and scheduling （DAPS） problem is addressed where new orders arrive on a continuous basis. A periodic policy with frozen interval is adopted to increase stability on the shop floor. A genetic algorithm is developed to find a schedule at each rescheduling point for both original orders and new orders that both production idle time and penalties on tardiness and earliness of orders are minimized. The proposed methodology is tested on a small example to illustrate the effect of the frozen interval. The results indicate that the suggested approach can improve the schedule stability while retaining efficiency.展开更多
在PCB(Printed Circuit Board,印制电路板)制造领域,准确的交期预测对于提升客户满意度和市场竞争力至关重要。文章将OLT(Order Lead Time,订单周期)科学计算模型与AP S(Advanced Planning and Scheduling,高级计划与排程)系统的订单预...在PCB(Printed Circuit Board,印制电路板)制造领域,准确的交期预测对于提升客户满意度和市场竞争力至关重要。文章将OLT(Order Lead Time,订单周期)科学计算模型与AP S(Advanced Planning and Scheduling,高级计划与排程)系统的订单预排功能相结合,以提高PCB工厂的交期预测准确性和订单交付效率。首先,分析了现有OLT计算方法的局限性。基于此,本文根据业务流程对OLT进行细化,并引入一种考虑在制数量和资源分配的加工周期计算模型。进一步,阐述APS系统的订单预排功能的算法逻辑,并利用该功能模拟多订单、多资源、多目标下的排产,估算订单的排程与交期。最后,通过案例展示了在实际生产环境中两者的交叉验证和结合应用,突显了本文方法在科学预测生产周期、提升订单履行率和增强客户满意度方面的显著优势。展开更多
This paper addresses the integrated processes of planning and scheduling of projects using technologies advanced tools as means for managing change in the era of the 4IR.The paper explores the traditional project mana...This paper addresses the integrated processes of planning and scheduling of projects using technologies advanced tools as means for managing change in the era of the 4IR.The paper explores the traditional project management planning and scheduling tools in conjunction with what technology has to offer,to bridge the gap between the traditional project management planning and scheduling tools and what the modern-day business market demands.An analysis of literature covering a wide range of theoretic and empirical studies was performed.The theories underlying various planning and scheduling methods were analysed in relation to the design of projects.A descriptive quantitative secondary data was used as a tool to assess the impact of technology on project planning for scheduling.The analysis of the study’s data was conducted using the principles of cross-tabulation.Inferences were drawn on the significant impact of the use of advanced technological tools on project planning for scheduling in current business time.Organisations can make use of the findings of this study to correctly apply the available advanced technological tools for more efficient schedule management planning to enhance the successful delivery of their projects.Further,this research can be used to provide learning opportunities for new and inexperienced planners and schedulers,and as a basis for further research in this field of knowledge.展开更多
This paper presents a case study for the advanced planning and scheduling （APS） problem encountered in a light source manufacturer. The APS problem explicitly considers due dates of products, operation sequences amo...This paper presents a case study for the advanced planning and scheduling （APS） problem encountered in a light source manufacturer. The APS problem explicitly considers due dates of products, operation sequences among items, and capacity constraints of the manufacturing system. The objective of the problem is to seek the minimum cost of both production idle time and tardiness or earliness penalty of an order. An intelligent heuristic is applied to the problem, and the results demonstrate that significant production performances can be achieved while ensuring customer satisfaction as opposed to normal oractices followed in the company relying on human expertise.展开更多
基金This project is supported by the Hong Kong Polytechnic University,China(No,G-RGF9).
文摘A dynamic advanced planning and scheduling （DAPS） problem is addressed where new orders arrive on a continuous basis. A periodic policy with frozen interval is adopted to increase stability on the shop floor. A genetic algorithm is developed to find a schedule at each rescheduling point for both original orders and new orders that both production idle time and penalties on tardiness and earliness of orders are minimized. The proposed methodology is tested on a small example to illustrate the effect of the frozen interval. The results indicate that the suggested approach can improve the schedule stability while retaining efficiency.
文摘在PCB(Printed Circuit Board,印制电路板)制造领域,准确的交期预测对于提升客户满意度和市场竞争力至关重要。文章将OLT(Order Lead Time,订单周期)科学计算模型与AP S(Advanced Planning and Scheduling,高级计划与排程)系统的订单预排功能相结合,以提高PCB工厂的交期预测准确性和订单交付效率。首先,分析了现有OLT计算方法的局限性。基于此,本文根据业务流程对OLT进行细化,并引入一种考虑在制数量和资源分配的加工周期计算模型。进一步,阐述APS系统的订单预排功能的算法逻辑,并利用该功能模拟多订单、多资源、多目标下的排产,估算订单的排程与交期。最后,通过案例展示了在实际生产环境中两者的交叉验证和结合应用,突显了本文方法在科学预测生产周期、提升订单履行率和增强客户满意度方面的显著优势。
文摘This paper addresses the integrated processes of planning and scheduling of projects using technologies advanced tools as means for managing change in the era of the 4IR.The paper explores the traditional project management planning and scheduling tools in conjunction with what technology has to offer,to bridge the gap between the traditional project management planning and scheduling tools and what the modern-day business market demands.An analysis of literature covering a wide range of theoretic and empirical studies was performed.The theories underlying various planning and scheduling methods were analysed in relation to the design of projects.A descriptive quantitative secondary data was used as a tool to assess the impact of technology on project planning for scheduling.The analysis of the study’s data was conducted using the principles of cross-tabulation.Inferences were drawn on the significant impact of the use of advanced technological tools on project planning for scheduling in current business time.Organisations can make use of the findings of this study to correctly apply the available advanced technological tools for more efficient schedule management planning to enhance the successful delivery of their projects.Further,this research can be used to provide learning opportunities for new and inexperienced planners and schedulers,and as a basis for further research in this field of knowledge.
基金supported by National Natural Science Foundation of China under the project of 70901021, 61174171 and 71171040Social Science Foundation of the Ministry of Education of China under the project of 10YJC630139 Foundation for University Outstanding Young Researchers of Fujian Province of China under the project of JA10023S
文摘This paper presents a case study for the advanced planning and scheduling （APS） problem encountered in a light source manufacturer. The APS problem explicitly considers due dates of products, operation sequences among items, and capacity constraints of the manufacturing system. The objective of the problem is to seek the minimum cost of both production idle time and tardiness or earliness penalty of an order. An intelligent heuristic is applied to the problem, and the results demonstrate that significant production performances can be achieved while ensuring customer satisfaction as opposed to normal oractices followed in the company relying on human expertise.
