Efficient utilization of the equipment distributed in different enterprises and optimal allocation of these resources is an important concern for networked manufacturing. The third party based equipment sharing approach is put forward to optimize the utilization of distributed equipment for networked manufacturing; Taking advantage of the shared equipment offered by equipment providers by means of lease agreement, the third party carries out production by establishing networked virtual factory. Operational mechanism of the third party based equipment sharing is discussed, and characteristics of this approach in achieving resource allocation are analyzed. Shared equipment planning is formulated as an optimization problem with the objective of maximizing profits for equipment coordinator, a mathematical model for shared equipment planning is developed. Finally a case study is discussed to show the effectiveness of the planning model.
在分析多项目管理发展的基础上,根据模具生产模式特点,构建汽车零/部件模具制造多项目实例,以工期为评估标准,运用约束理论(Theory of Constraint,TOC)的关键链管理技术(CCPM)进行多项目计划创建与控制,同时利用Pro-ject2003项目管理软件(关键路径法)实现此过程,对比两种结果显示,完工保证率为90%情况下,运用关键链管理技术(CCPM)项目平均完工时间为83h,运用关键路径法(CPM)平均完工时间为109h,效率提高约20%。
