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Multi-stage network plan based schedule calculation method and implementation of method

A computing algorithm and computing method technology, applied in the direction of computing, data processing applications, resources, etc., can solve the problems of not meeting the application requirements of aerospace engineering projects, not supporting multi-level network planning models, and unpublished schedule calculation algorithms.

Active Publication Date: 2014-04-16
北京神舟航天软件技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of schedule calculation, P3 and P6 do not yet support the multi-level network planning model (you cannot set dependencies between summary tasks or between summary tasks and job tasks), and Project is only suitable for small and medium-sized project management, and its schedule calculation algorithm has not yet been implemented. public
Therefore, it cannot meet the application requirements of aerospace engineering projects in some aspects

Method used

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  • Multi-stage network plan based schedule calculation method and implementation of method
  • Multi-stage network plan based schedule calculation method and implementation of method
  • Multi-stage network plan based schedule calculation method and implementation of method

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Experimental program
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Effect test

Embodiment

[0057] The forward calculation includes four algorithms: forward calculation algorithm, calculateTask function, getTimeByForwardTasks function and getTimeByParentFowardTasks function.

[0058] The forward calculation algorithm is used to calculate the earliest start time and earliest completion time of each task of the project according to the dependency relationship between the tasks in the project and push forward from front to back.

[0059] Input: project unique identifier projectid, project calendar identifier calendarid, nodeMap.

[0060] Output: A collection of calculated project task objects, which includes the earliest start time and earliest finish time of all tasks.

[0061] Process description:

[0062] (1) Through the unique identification of the project, extract and collect data, and obtain the sets fRMap, childMap, parentMap, and dataMap.

[0063] (2) Traverse all tasks contained in the project.

[0064] (3) If the nodeMap does not contain the current task to...

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Abstract

The invention discloses a multi-stage network plan based schedule calculation method and implementation of the method. The method is characterized in that schedule calculation usually comprises four steps of forward calculation, reverse calculation, final calculation and critical path calculation to obtain the earliest starting and ending time, the latest starting and ending time, the starting and ending time of each task, key tasks are obtained according to definitions of key tasks, and paths formed by the key tasks are key paths. The method which comprises the task dependence relation and the task limit type constraint and the method description capable of being achieve by computer software easily aim at solving the technical problems of computer software programming schedule plans and scheduling optimization.

Description

Technical field: [0001] The invention relates to a schedule calculation method and algorithm realization based on a multi-level network planning model. Background technique: [0002] Aerospace model engineering is a group management engineering project with very complex collaboration and difficult risk control. Its project plans often reach thousands of items. In this case, how to write and optimize the schedule reasonably and efficiently, It is particularly important to make the project carefully controlled within the scope of the plan and ensure that the project achieves its goals "faster and better". With the development of computer technology, the advantages of using computer software for scheduling are becoming more and more obvious. For example, if a project consisting of 100 or so activities is to be compiled, a person needs at least 1 week, while the computer only needs a few seconds. [0003] The schedule of aerospace model projects is generally centered on the de...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
Inventor 王学敏单承方李琳杨鸽
Owner 北京神舟航天软件技术股份有限公司
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