Establishment of production planning optimization model

According to the moving and processing flow of the material, the planning optimization model can be divided into the procurement of raw materials, the atmospheric and vacuum working units, two processing devices, product blending, http://www.aliyun.com/zixun/aggregation/8713.html "> Product sales and other sub modules. These sub modules are modeled, and the optimal planning model is integrated as a whole. The common modeling methods mainly include graphic modeling and table modeling, although the graphic modeling has the advantages of convenience and intuition, but because of the complex relationship between each child module, some logical relations are not convenient to use graphical representation, so the advantage of graphic modeling is not obvious. Planning optimization software modeling is commonly used in table modeling, table modeling with the concept of row and column, and the LP model of Constraints and variables, in general, the establishment of the model is divided into the following steps:

1. Determine the system.

To determine a system is to identify the object of the model.

2, collect data, determine parameters and decision variables.

Among the many parameters, some are given known data, such as the product quality index issued by the superior department, the product, the raw material price and the equipment production capacity determined by the market supply and marketing situation, and some factors that can be controlled by the decision-maker, i.e. the variable called the decision variable, which is determined by the decision. such as the feed quantity of each device in the production plan, the output of the non specified product, etc.

3. Find the relationship and determine the constraint conditions.

The constraint condition reflects the relationship that must be followed between the decision variable and the parameter. In the process of modeling, to ensure that the model can accurately reflect the actual situation, we must try to take all the constraints into account.

4. Determine the objective function

The objective function in the Enterprise planning Optimization model is usually the economic index, which is generally considered as the maximum profit or the least energy consumption after the cost and profits.

The quantity of the material is the leading of the whole plan optimization system, the production capacity, the personnel quantity and the equipment are important to simulate the material and property of the subsequent processing device.

Through the related technology and various constraints to the sub-module set into a total planning optimization model, it is necessary to solve the model, the general establishment of a single factory model usually includes 3000-4000 variables, 2000-3000 constraints, on such a large scale matrix solution, the advantages of the computer show. The software of Business Plan optimization contains the solution software package, the computer program can solve the model quickly, and obtain the optimization result.

The resulting results are output in the form of a report, and the report production system can be used to format the report and generate all the necessary reports.

The establishment of the model is also a long-term process. When the external conditions change, the model must be modified and checked accordingly, in order to meet the current situation.

Yongkaida APs, to solve the scheduling problem that cannot be satisfied by ERP Http://www.yukontek.com,APS Production planning management expert 400-076-7600,021-68886010