基于灰色TOPSIS的多项目分散式能力约束缓冲设置

Decentralized capacity constraint buffer sizing method for multiple projects based on gray TOPSIS

为减小多项目管理中不确定因素造成的影响,确定更为合理的多项目调度计划,提出一种基于鼓活动关联性的分散式能力约束缓冲设置模型。首先,考虑鼓活动的特性和各鼓活动的相互关系,基于灰色TOPSIS法确定的相对贴近度计算能力约束缓冲尺寸,并结合安全时间进行分散式设置;其次,基于鼓活动之间的间隔时间调整分散式设置的缓冲大小,进而得到各个鼓活动后设置的缓冲值;最后,利用MATLAB对项目进行仿真模拟,结果表明,相比于经典能力约束缓冲设置方法,所提方法能够在项目之间以较小的缓冲提供足够的错开时间,在缩短计划完工期的同时保证项目群按时完工。

To reduce the impact of uncertain factors in multiple projects and determine a more reasonable multi-project scheduling plan,a decentralized capacity constraint buffer sizing model based on the relevance between drum activities was proposed.Considering the characteristics and interrelationship of drum activities,the size of capacity constraint buffer was calculated based on the gray relational relative closeness determined by gray TOPSIS method,then it was distributed combined with the safety time.The decentralized buffer size was adjusted in turn based on the interval between drum activities,and then the buffer size after each drum activity was obtained.The project group was simulated by MATLAB.The simulation results showed that the proposed method could provide sufficient staggered time between projects with a smaller buffer and shorten the planned duration while ensuring the on-time completion rate of project group by comparing with classical capacity constraint buffer setting methods.