Research And Application On Workshop Production Plan And Control System Based On Make-To-Order In Semi-process Industry

With the gradual change of the market sale and production mode from "Sale to Production" to "Production to Sale", multi-varieties and small or even single batch production is becoming the dominate mode of the semi-process industry. So, it is very important for the semi-process industry to establish effective production plan and control system so as to adapt to market requirement and to improve its competent ability. On the base of studying the characteristics, architecture and function attributes of make - to-order semi- process industry, this paper establishes a decision model of workshop production plan. It utilizes the logarithm graph, heuristic traverse algorithm, task disassembling, working procedure overlapping etc. to establish and control the workshop production plan dynamically. The main research contents are as follows.1 )The characteristics of semi-process industry based on make-to-order are studied, which means that the purchase tune is long while the due date is short, the working procedures are successive and discontinuous. Then the general structure of production system based on make-to-order mode in semi-process industry is put forward, which includes estimate of the dynamic finite resources, evaluation of the order based on rough capability balance, material requirement planning, production plan, order tracing, collection and feedback of the local data etc. They all together form an integrated and closed loop system as a whole.2) The function attributes of the workshop production plan and control system are also studied, that is to say, it is a complicated system including discrete and successive variables, and a great system which is ladder structure. Affirmance, process time etc. can be found in the description of the production process. We proposed a fuzzy multiple attribute decision- making model through analyzing the great number of uncertain and fuzzy factors based on these function attributes. This model is stable, robust and is beneficial to simulate and realize the decision - maker's actual plan mind and work process.3) At the premise of analyzing the integration of the enterprise function information system and the harmony among departments, the paper studies the establishingprocess of the workshop production plan. According to the fuzzy multiple attribute decision- making model, we achieve the decision-making of technics route. Using the logarithm graph, multi-varieties production batch problem is resolved. The production scheduling is realized with heuristic traverse algorithm. At last, the strategies, which include disassembling task, shorting interval of the working procedure, overlapping working procedure, deferring the back working procedure etc., are brought forward to deal with the order's inserting, postponement, freezing and doing again on carrying out the production plan.All the research is validated through the design, development and application of workshop production plan and control system of a certain Wall Paper factory in GuangDong.