Research On Expected Inventory Availability Workshop Scheduling Algorithm

Workshop production scheduling information system is a critical part of assembly plant information management. As ERP (Enterprises Resources Planning) System runs well, the enterprises will still need to implement MES (Manufacturing Execution System). The workshop expected inventory can't be predicted precisely, leading to some parts'arrive time can't be predicted, Cause scheduling algorithm can't make workshop equipment utilization reaches the highest. Therefore considering expected inventory availability shop scheduling system can not only gathering the workshop expected dynamic inventory information, but also providing basic data for the workshop scheduling algorithm, improving equipment utilization, product manufacturing quality, reducing product production cost and enhance competitiveness.This paper studied the ERP system how to take the decomposition of MRP, it according to the production plan and product BOM and existing inventory decomposition, the paper analysis the method of the general production scheduling that according to product BOM structure using heuristic algorithm, genetic algorithm to schedule; But a lot of scheduling processing researches ignored the problem of expected availability material inventory.First of all, this paper analyzed the workshop scheduling problem in types, characteristics and many products processing BOM, based on the consideration process material inventory availability expected level of scheduling algorithm.Then, the design for manufacturing workshop working procedure of order level material expected availability information system, including application use case diagram sequence diagram analysis and the workshop parts management, the assembly, the location in products management, the main function, for workshop scheduling system improved processing technology to provide basic data.At last, this paper expected scheduling problem based on the consumption of the relationship between the inventory availability, in the workshop working procedure level material expected availability information system based on the improved product BOM, generate improved processing technology tree, that is the actual can scheduling dynamic BOM, improve the accuracy of scheduling, make scheduling results more actual production and processing the scene.