| The Critical Chain Project Management method are put forward by Goldratt earliestly.Critical chain theory provides a solution for the limited resources of the project schedule management.It not only greatly shorten the time limit for a project,at the same time can be in the process of dynamic management in the project.Therefore,many scholars give highly of critical chain theory,at the same time,and keep on going research,improvement and optimization,successively put forward a lot of critical chain project schedule management methods,which based on the critical chain theory also has a lot of application research.At present,based on the theory of critical chain project schedule management application research has been involved in electric power engineering,scientific research project,software development,industrial engineering and other fields,and achieved some results.Digital,automatic and intelligent is the trend of the development of the equipment manufacturing industry in the world.The equipment manufacturing industry enterprise realizes digital production and management through technical reform is the only way to adapt to the development trend,improve the economic benefit,and enhance core competitiveness.However,digital technology innovation project has large investment,long period,large technical difficulties and a lot of restricting factors,high uncertainty factor,etc.So,an effective project schedule management method must be taken to ensure the project completed smoothly.Critical Chain Project Management considers the logical relationship between the project tasks and resource constraints,eliminates the influence of uncertainty factors by setting the buffer,and control the whole project schedule real-timely through the monitoring of the buffer.This research puts forward some new idea of critical chain project schedule management and buffer setting and monitoring,enrich the theory of critical chain,enlarging the application scope of the critical chain theory.At the same time,by building digital technology innovation based on the critical chain project schedule management model,provides the digital technical innovation project schedule management for the enterprise a scientific and effective management mode,and provides a effective way to avoid delaying schedule,increasing management cost and damaging economic benefit out of control.Also,it provides reference and demonstration for the digital technical innovation project schedule management in the future.Firstly,this research elaborates the background,contents,methods,technical route,significance and the innovation place of the research.Secondly,this research has theory and literature review for the project progress management,theory of constraints and critical chain theory.And then it describes the general situation of the digital technical innovation project of T company,and analyzes the status quo and existing problems of the digital technical innovation project progress management.In this research,the focus is building a model of schedule management based on critical chain to optimize the schedule management of digital technical innovation project.The model includes critical chain project schedule,buffer setting and critical chain project schedule control.When setting the critical chain buffer,this research,on the basis of the characteristics based on chain,puts forward to bring the index of uncertainty,which based on project characteristics,into the comprehensive evaluation index system,and use the entropy method and TOPSIS method to calculate the uncertainty factor,and then with the use of variance method to calculate the size of the buffer.In terms of critical chain project schedule control,this research presents a method of slope classification method and monitor trigger point to set up early warning,and the method of dynamic buffer rolling control based on dynamically allocated buffer quantity.The method determines a warning area,and the warning area could be divided into three parts by Setting two slope line segments based on process uncertainty coefficient,and judge the slope which the project schedule corresponds belonging to which part of the warning area.And then this research puts forward the method of dynamic buffer rolling control based on dynamically allocated buffer quantity.Later,this research analyzes the digital technical innovation project of T Company with the use of critical chain schedule management model.Finally,this research analyzes the optimization effect of T company digital technical innovation project schedule management based on the critical chain.It concludes the main research results and revelation of enterprise project management,and points out the deficiency of this research and future research direction of improvement. |
