Research Of H Company Production Planning And Scheduling Based On Theory Of Constraints

Under the economic environment that the car market has been in a slump,the manufacturing enterprise surplus,customers need diversified,individualized needs and wants booms,the manufacturing enperprises have transferred from mass production to multi-variety and small batch.This type of manufaturing in one way enhance the competitiveness and the flexibility for the plant,have the ability to adjust to the dynamic change of the market;but on the other hand it increase the burden of the enterprise,many companies suffered from this way of production that many factors involved,such as the confusion of the logistic supply chain,frequently purchasing,short lead time.So a resonable and effective way of production planning and scheduling become the key importance to manufacturing factories.This article based on the theory of constraint,emphatically researching the bottleneck process,the core of the theory lies in the recognition and the control of the bottleneck and make implementation on the system of the whole production management.This article based on H factory which processing gears,making a deep research toward the production plan and control problem guided by the theory of constraints.In this paper the research mainly based on three methods,the production planning and scheduling,theory of constraints and the discrete event system simulation tools,integrete the connections together,The implementation of system first need to collect data from the production enterprise,including the process,production cycle time,order information,demand of market and the capacity;Secondly,it identify the bottleneck of production system by establishing a enterperise production module based on Flexsim simulation system;then make a production planning on bottleneck position applying DBR production planning and scheduling theory based on the information collected by Flexsim system.At last applying improved PSO(Particle Swarm Optimization)method on parameters optimizing and implement optimized parameters on DBR production planning and scheduling system.Effected by logistic and facilities the position of bottleneck always changes named bottleneck shifting,which influences the implement of production planning and scheduling.This article also analzing the bottleneck shifting influence factor for predict bottleneck shifting tendency.