Study On Production Scheduling System Of The Job-shop Based On MES

In recent years, with the development of information technology and the requestof agile and rapid production, MES (Manufacturing Execution System), which is amanagement information system for the Job-shop layer, becomes a bridge that spansand fills up the gap between the upper layer of plan-management and the ground floorlayer of industrial control in enterprise. And the Job-shop scheduling is the coremodule of MES, which directly affects efficiency, operation and management inproduction. Effective scheduling method can improve benefit and reduce cost,thereby enhance the competitive advantage of the enterprise. Thus, the research onthe Job-shop scheduling problem is of great value both in theory and practice, andalso can do some matting to other study based on MES.This paper takes the advanced theory of MES as the guide ideas, and combinesthe characteristic of discrete production management, and establishes the productionscheduling system which fits to the condition of Single-piece and Small-batchProduction. First of all, in this paper, the relevant theory of Manufacturing ExecutionSystem and the Job-shop production scheduling is analyzed deep, and MES fordiscrete enterprise that included framework, data communicating and function isoffered. Some points are expatiated on which about the two layers of schedulingmode with the production arrangement and production control for the Job-shop layer.In theory, three aspects on Job-shop scheduling-modeling, scheduling methodsand strategies are summed. Then by considering the feasibility of scheduling, thebackward scheduling algorithm based on priority dispatcher rules is put forward toensure the delivery time. And according to the request of production control layer,this paper proposes the relevant scheduling strategies and tracks processing executionwith the form of Gantt chart, report and so on, which forms the closed-loop control inproduction. These can solve effectively the problem of Job-shop productionscheduling.Finally, we analysis and design the production scheduling system by means ofthe object-oriented method. And based ASP.NET platform, a scheduling prototypesystem is developed including production plan-management, scheduling basedman-machine, production supervisal and so on.