Buffer adjustment method for key chain based on project property

Abstract

The invention discloses a buffer adjustment method for a key chain based on project property, which comprises the following steps: step 1, generating an initial feasible scheduling scheme; step 2, calculating free time difference of task and identifying the key chain; step 3, calculating buffer size by two classical quantification methods, selecting the better quantification method to adjust the buffer size through an adjustment strategy; and step 4, generating a buffer scheduling scheme and outputting the result. According to the buffer adjustment method for the key chain based on project property, two important factors of network complexity and resource tightness which affect the robustness of the scheduling scheme are considered, and the network complexity and the resource tightness are introduced in the buffer quantification method, so that the scheduling scheme can respond to the uncertainty of a project in a better way. The method can obtain a reasonable buffer inserting scheme on the basis that the feasibility of the scheduling scheme is ensured. The buffer adjustment method for the key chain based on project property has practical value and vast application prospect in the technical field of optimizing and scheduling.

Description

technical field [0001] The invention relates to a critical chain buffer adjustment method based on project characteristics, in particular to a critical chain buffer adjustment method based on project characteristics in an uncertain environment. The invention belongs to the technical field of optimization scheduling. Background technique [0002] Since the critical chain method was proposed by Goldratt in 1997, it has received extensive attention from scholars (see "Critical Chain" in 1997 for details). Goldratt pointed out that traditional project management methods assume that all tasks are of equal importance and therefore add safety time to all tasks. However, most of the safety time is not necessary, and may even cause a great increase in the total construction period. Both theoretical research and practice show that the bottleneck affecting the total project duration is the critical chain in the project, and the tasks on the critical chain need to be protected. A cri...

AI Technical Summary

Problems solved by technology

[0008] The present invention is a critical chain buffer adjustment method based on project characteristics. The new buffer adjustment strategy overcomes the shortcomings of the classic method of excessively large buffer settings, thereby increasing the buffer utilization ratio in practical applications, reducing idle resources and project delivery time

Images