Study On The Method Of Producion Plannning And Control In Automobile Industry Based On Supply-Demand Network Coordination

Recently,with the rapid development of technology and the prevalent improvement in living standards,people's demands for automobiles are higher and higher,showing an individual and diversified trend.In the wake of the formation of the world's united market,the world's economy presents a situation of diversification and the international competition becomes more intense.By reason of that,global manufacture will be the biggest opportunity and challenge to the automobile industry in the new period.The original theory of supply chain management no longer adapted to the demand of competition and development in manufacturing enterprises,so the theory of supply-demand network came into being.The supply-demand network, formed on the basis of supply and demand mutual relationship in related enterprises, is a supply-demand incorporating network structure which is multifunctional,open and dynamic.Based on the conception of supply-demand network coordination,after studying several production planning & control methods like Advanced Planning & Scheduling etc.,this thesis establishes an academic frame model of the coordinated production planning & control in automobile industry supply-demand network,especially dissertates the theory of coordinated production planning & control among the members in that network and the interior of the car factory,and also studies the key methods and applied technologies.Firstly,by analyzing the structure and characteristics of automobile industry supply-demand network and using the technologies of MAS constructing model,this thesis constructs a frame model of coordinated production system under the condition of automobile industry supply-demand network,and designs the agent internal structure of member enterprises.Secondly,the thesis constructs a method system for production planning & control coordination.It puts forward the task distribution and scheduling methods based on MAS coordination and the dynamic controlling methods during production process.Hybrid genetic algorithm is also researched as optimization technology for task distribution and scheduling.Thirdly,using Markov equation,this thesis analyses the optimization questions of Push/Pull hybrid production mode in car factories,and devises its hybrid production planning & control system based on ERP/APS/JIT.The relationship between the inventory capacity for cars and the efficiency of order implementation is analyzed with mathematic method.Lastly,facing the current status of the applying information system in automobile industry enterprises,the thesis provides an integration framework for enterprise utilization system and actual technologies based on CORBA and MAS.As an application example,the integrated method is put to use in the PPC system in car factory,integrating ERP,APS and JIT.This thesis is of great benefit to improve automobile industry production system's acting ability to market,and provides theoretical framework and actual methods for production planning & control system's coordination.It also provides theory and technology for the construction of information system integration in automobile industry enterprises.