Application Of The Critical Chain Technique In The Scheduling Management Of AGV-Control-System R&D Project

As an important logistics supporting equipment for intelligent factories and intelligent manufacturing,domestic AGV industry has witnessed unprecedented prosperity in recent years.However,AGV belongs to non-standard automation equipment.Project management is difficult and complex,and project delay is common.As the core component of AGV,the research and development progress of its control system is particularly serious.Therefore,it is of great significance to summarize and analyze the reasons for project delay and introduce effective methods and means to improve project schedule management.Through analyzing the current situation of Z company schedule management,this paper summarizes the main factors influencing the AGV control system research and development project schedule.Then,the weight of these factors was quantitatively evaluated by analytic hierarchy process(AHP),and it was found that the main reasons for the delay were that the process estimation period is too long,schedule for emergency consider inadequate,and schedule risk coping mechanism is not scientific and so on.Therefore,this paper combined with the actual engineering analysis of a variety of project progress management methods and tools,and finally chose the key chain technology as the basis to establish a complete set of project progress management model system.At first,the model avoids the problem of "student syndrome","Parkinson’s law","murphy’s law" and other factors that lead to the estimation of too long construction period by means of time limit compression.The second,limit theorem and risk aggregation principle are used to reduce the overall project delay risk.The third,buffer mechanism is introduced to transfer and absorb the advance and delay of some micro processes caused by inaccurate or uncertain construction period compression.In this paper,we put forward a risk control and intervention model based on the combination of buffer consumption and project stage.The risk of project delay is greatly reduced by changing the mechanism of project delay risk compensation to the mechanism of early warning.In view of the current situation that the research and development team gradually turns to the new generation after 1990 as the main body of the enterprise,the paper innovatively puts forward the corresponding system culture construction scheme to support the implementation of the key chain technology.Through the application of the key chain progress management model proposed in this paper,Z company has achieved remarkable results in the AGV control system research and development project.According to the original project management method,Z company estimated that it would take at least 239 working days to complete the project.Moreover,due to insufficient consideration of possible uncertainties in the process of project implementation,the delay risk of original plan was relatively high.After the application of the management model in this paper,the project duration plan is shortened to 171 working days.After practice,the actual completion period of the project is 169 working days.The significant improvement of project efficiency indicates the feasibility,effectiveness and superiority of the key chain technology in such research and development projects.The qualitative and quantitative project progress management method proposed in this paper is also of good reference value for the progress management and optimization of other projects of the same type.