灰色网络计划中的关键线路确定方法研究

由于目前区间灰数的表征和运算过程存在着运算结果对灰数的灰度进行不必要的放大,造成信息的严重失真的问题,所以在灰色网络计划中计算出的工作总时差也有不同程度的放大,这时再根据工作总时差为零或最小的方法来确定关键线路则是不准确的.给出了确定灰色网络计划关键线路可以根据关键线路上总工期最长的方法,简单易行,且有效避免了灰数运算对灰数灰度放大的问题.

Study on the Determination Method of Critical Path in Grey Network

At present,the unessential enlargement of grey level exists in the results of the token and computing process of interval grey numbers,which causes serious distortion of information,so the total float time has also different magnification in the computation of grey network scheduling.It means that the method to determine the critical path is inaccurate according to the total float time which is zero or minimal.In this paper,according as the total project duration of the critical path is the longest,the method of determining the critical path of grey network scheduling is suggested,which is easy,feasible.Meanwhile,it effectively avoids the unessential magnification to the grey level.