The Balance Problem Of Assembly Personnel In Aircraft Maintenance Research And Optimization Of Warehouse Allocation

This paper,combined with the major needs of the country’s development on the refined management of aviation equipment maintenance support closely,under the support of NSFC and Research Project Supported by Shanxi Scholarship Council of China,systematically studied the production line balance problem happened in the aviation maintenance and the arrangement of warehouse issue occurred during the the final assembly stage,then applied the the theoretical results to optimization design of the assembly process in the assembly workshop and the optimal configuration design of each warehouse and its each region.The following achievements have been produced:1)In the production line balancing problem,aiming at the multiple constraints encountered during the aircraft assembly,affect each other,the greedy algorithm is used as the basic idea to,taking one working day as the unit,choose the best method in each unit at present,which means seeking the local optimal solution,to obtain the process optimization of the single-station working day,then obtain the global optimal solution.In the optimization of warehouse allocation,the system layout design theory(SLP)is introduced.After the product,it made a comprehensive evaluation of the correlation between qualitative and non-qualitative logistics by setting weights,then combined the Pareto principle,alter the smallest factor to maximize the benefits to draw the optimization conclusion.2)In the problem of production line balance,the model of single station working day process arrangement is established.According to the actual situation,the model refined the work arrangement in multi-tasks’ orders of different systems and people during the work time,established the task order priority chart to draw the Gantt chart.After that,taking the output point of the total production time,and based on the average utilization rate of the totalnumber of workers in the production line and the load smoothing index of the workers,it established a comprehensive evaluation system of the production line as a standard,and obtain the results of process optimization.3)In the optimization of warehouse allocation,it drew the flow correlation diagram of each warehouse,based on the warehouse flow and the materials delivered by each warehouse in proportion.Then,it set the weight ratio and established the comprehensive grade evaluation model of the warehouse by synthesizing the non-qualitative flow diagram between each warehouse,which solved the prioritization problem by comprehensive score.4)In the production line balancing problem,based on the process scheduling model,it analyzed the task scheduling of several workers in four different systems in a station of an aircraft,it drew the serial and parallel production lines and obtained four optimization results with the aim of minimizing working time.Then optimal solution is determined by the comprehensive evaluation system of production line and the load smoothing index of workers.5)In the warehouse optimization configuration,based on the comprehensive level evaluation of the warehouse,the logistics intensity level chart is constructed,and the logistics intensity among the warehouses is represented by symbols.The qualitative logistics interrelation established by the regional proportion flow chart and the non qualitative logistics interrelation established by the close degree relationship between regions are used to draw the comprehensive interrelation with the set weight proportion.Then,the priority problem is solved according to the scores between the two warehouses in the comprehensive correlation diagram.After the warehouse is arranged according to the above optimization results,the evaluation formula is established,and the score of the optimized warehouse is compared with the score before the optimization,so as to verify the necessity of optimization and obtain reliable optimization results.