Study On Dynamic Scheduling Method Of Production Operation For Vehicle Air-conditioning Assembly Shop

With the increasingly fierce global market competition of automobile industry, the auto and auto parts manufacturers have been facing pressures to improve abilities of manufacturing management and customer service. Facing the rapidly changing environment of international auto market, how to dynamic scheduling quality and accurately to disturbance events are the crucial points for the majority of auto and auto parts manufacturers. Recently, many scholars have been working on researches of dynamic scheduling methods and many valuable results have been accomplished. But the researches on vehicle air-condition manufacturers are few. In this paper, the dynamic scheduling methods of production operation for vehicle air-conditioning assemble shop are researched based on ideas of Manufacturing Execution System.First, based on the analysis of characteristics, status and requirements of dynamic production scheduling for vehicle air-conditioning assembly shop, an information feedback mechanism based on dual-feedback control was made and the dynamic scheduling strategy of vehicle air-conditioning assembly shop was proposed. Considering the reentrant constraint, equipment capacity constraint, and time discrete constraint etc., a multi-objective scheduling model of vehicle air-conditioning assembly shop was set up. According to the characteristic of the model, a solution algorithm based Genetic Algorithms and Grey Relational Analysis was presented.Furthermore, combined with ideas of MES, the architecture and the running mode of a dynamic production scheduling system for vehicle air-conditioning assembly shop are set up, and two of the system's key technologies are researched. One is about real-time trigger mechanism for dynamic scheduling system based on database triggers, the other is the implementation technology of parallel genetic algorithm based on Java multi threading.Finally, based on the academic researches above, a dynamic production scheduling system of vehicle air-conditioning assembly shop was developed and applied in a vehicle air-condition Manufacture in Chongqing. The result of system implementation in the company is valuable.