Manufacturing execution system of bluetooth speaker pen holder assembly line based on genetic algorithm / Yang Quiping

Dissertation

College of Industrial Education (CIE) Doctor of Education (DT) Technological University of the Philippines 2023

"Based on the current situation of a small manufacturing enterprise in China, combined with the actual situation of the assembly and production of the enterprise's Bluetooth speaker pen holder, through in-depth investigation and analysis, aiming at the problems in the current production of Bluetooth speaker pen holder, such as low information level, difficult production scheduling, low equipment utilization rate, difficult product quality monitoring and traceability, etc., on the basis of the traditional Bluetooth speaker pen holder assembly line. MES system based on B/S architecture is researched and developed. This paper mainly does the following work: (1) According to the characteristics of Bluetooth speaker pen holder manufacturing enterprises, the business process is sorted out, and the demand analysis is carried out according to the business process and production process. (2) The paper describes the problem of flexible job shop scheduling, describes the interference factors and characteristics of dynamic scheduling problems, and proposes the maximum completion time minimization and deviation minimization as the performance indicators of flexible job shop dynamic scheduling problems by analyzing the performance indicators and deviation degree of dynamic scheduling problems. The mathematical model of dynamic scheduling of flexible production shop was established. (3) In view of the dynamic scheduling problem, when to start rescheduling and how to start rescheduling should be considered. In order to represent the interference degree of dynamic events on production, the concept of shift coefficient was proposed. The shift coefficient was calculated by using the associated process diagram, and the shift coefficient was taken as an indicator of whether to start rescheduling, and a hybrid rescheduling driving mechanism based on shift coefficient was established. A hybrid rescheduling driver strategy based on complete rescheduling and maintaining original scheduling is proposed. (4) The coding form of genetic algorithm is designed according to the data characteristics of dynamic scheduling problem, and the crossover and variation of genetic algorithm are improved by different methods. In the chromosome selection part, the championship method is used to select the high-quality chromosome, and the precocious problem of genetic algorithm is improved by simulated annealing. The production scheduling optimization scheme of genetic simulated annealing hybrid algorithm is formed and verified by experiments. (5) According to the demand analysis, the overall architecture of MES system is designed, and each function module is designed in detail, including specific function, process design, class design. etc. The whole data logic of the system is sorted out. the whole E-R diagram is constructed and the database table is designed in detail. Finally, the data acquisition interface protocol is designed and the data transmission format is specified. (6) All functional modules of the designed system, including system server and system interface, were realized by using B/S architecture and software development mode separated from the front and back ends. Finally, all functions of the system were tested to prove the feasibility and effectiveness of the system. The test results show that the system realizes data collection, processing, storage, utilization and management of each link of the production of Bluetooth speaker pen holder, forming a comprehensive production operation management platform with production operation management, production process management, quality control, material traceability management, and equipment management, among others. The scheduling method of the improved genetic algorithm adopted in this paper has shortened the production cycle to varying degrees, and verified the performance superiority of the improved genetic algorithm in the maximum completion time. The rescheduling starting mechanism and starting strategy adopted in this paper can self-adjust production scheduling according to the actual situation, reduce the deviation degree of the system, ensure the order of production to the maximum extent, and reduce the waste of resources. The development and use of MES system of Bluetooth speaker pen holder production line based on genetic algorithm greatly improves the information level of production enterprises, improves the production capacity of Bluetooth speaker pen holder under limited resources, improves the production efficiency of the production line, reduces the production cost of the company, and reduces the operation risk of the company. It provides the conditions for mass production of Bluetooth speaker pen holder
Keywords: manufacturing execution system, genetic algorithm, production scheduling, bluetooth speaker, reschedule. simulated annealing algorithm, flexible production shop-Author's abstract"