The Research On Production Decision Of Hybrid Production Enterprises

With the development of science technology and society economic, the enterprise is facing the heavy competition. Traditional production management can't apt to the development of earl. The enterprises of manufacturing are facing the many production methods coexistence. Hybrid production enterprises have mushroomed. In the past years, there is so much study on the discrete or flow shop enterprise, while lacking of the study on hybrid production enterprise. In according to the features of hybrid production system, we should put importance on the decision of production. There are two aspects to be optimized in this paper; those are planning of master production plan and production scheduling.Firstly, this paper gives a review on production decision in hybrid production system at home and aboard. It comprises two main aspects. It's namely master production schedule and production schedule. This paper also gives us the shortages in research.Then this paper do some research on master production schedule, it proposes the master production schedule's making adopts the shortest path method. According to its multiobjects, we draws a production network tree, the uses the shortest path to find the minus cost tree, finishes the master production schedule finally. Based on the master production schedule, this paper presents the process of production decision, then it's ready to do some research on production scheduling.There are three aspects to solve the production schedule, they are bottleneck,lotsize and earliness\tardiness. For the production schedule based on bottleneck in hybrid production problem, this paper proposes a loop-insert algorithm, which can adjust the sequence of entering bottleneck stage. It prompts the efficiency of the production schedule based on bottleneck in hybrid production system.As the research on production schedule based on lot size, this paper minimize the times of changing device. It proposes an idle area assignation heuristic algorithm to make production schedule based on lot size. This algorithm considers the production capacity, tool wear and tear, order priority ands the due date of order. It uses the forward and backward insert idle area method to solve the problem.With the just in time production, the production schedule based on earliness/tardiness arises. This paper adopts the clustering and assigning algorithm, first it assigns cluster according to due date, then it optimizes the delivery date, and finally it integrates the whole combination. This paper considers zero setup cost and non-zero setup cost problems. Hybrid production decision is to optimize the production, which can improve the production efficiency. This paper optimizes the master production scheduling and production scheduling. In production scheduling we consider the bottlenecks, lot size, earliness/tardiness problems. It's benefit to make decision in hybrid production system.Based on above research, this paper has four innovations:(1) This paper presents a shortest path heuristic algorithm to solve master production schedule in hybrid production system. The master production schedule is to minimize the tardy penalties, makespan, setup and holding cost with the capacity constraint.(2)This paper presents a loop-insert algorithm to minimize the makespan in hybrid production system. The algorithm can improve the efficiency.(3)This paper presents the idle area assigning algorithm to solve the production schedule in hybrid production system. It contains the lotsize and schedule. It can reduce the times of device change and minimize the tardy time.(4)This paper adopts the cluster assignation to solve the schedule with earliness/tardy problem. It can minimize the number of lot size and holding time, tardy time.