Research Of Methods And Application On Assembly Production Planning Management Under Resource-constrained PM

With the forming of the global market and the shortening of product life cycle, the equipment manufacturing industry in china is under more pressure of competition from the requirements of customers personalized higher and higher and the deliver time shorter and shorter. It is necessary that large equipment manufacturing enterprise must promote existing product development capacity, enhance independent innovation capacity, transform current production management mode into project-based manufacturing(PM), so that they can achieve new development in reasonable use of manufacturing resources, rapid response to personalized needs of customers, as well as improving products and service quality.Large mechanized equipment products have the characteristics of large volume, complex structure and high customization, belonging to typical single-piece and small-batch production mode oriented to ETO. It is necessary to build compatible production planning mode for independence of planning executing and relevance of management between final assemble process and components production process, as well as description method and matching method for resource capacity. Production planning and control model based on MRPII/ERP system can better realize the transformation management between independent requirements and dependent requirements in the course of production. The material requirement planning is formed by layer upon layer decompose of product BOM so that it is difficult to trace materials process oriented to project under project-based management (PM) environment so that MRPII/ERP system dissatisfies manufacturing management requirements based on project. Therefore production planning and control methods derived from MRPII/ERP system need be improved and supplemented so to meet management demands for PM under the large-scale and single-piece production mode. For the common demands of production planning in equipment manufacturing enterprise, this paper studies two themes—the production planning and the resource matching oriented to project on the basis of broad research and deep analysis, aims to build PM management model.This paper combines the characteristics of product design and manufacturing mode by project in equipment manufacturing enterprises, and proposes the production planning system framework of project-based manufacturing oriented to resource constraint as well as hierarchical production planning model of PM. Multistage production planning is formed according to project master planning based on assembly cell and material requirement planning by project that can separate effectively final assembly scheduling (FAS) from manufacturing of components, and through three-dimension matching model of key resources project master planning can be optimized by use of nonlinear integer programming model from level of satisfaction of resource requirementThis paper combines the characteristics of manufacturing resource requirement for assemble in large-scale and single-piece production process, and proposes two-dimensional capacity model of assembly manufacturing resource by PM which can reflect uniformly time capacity and quantity capacity of assembly manufacturing resources. A manufacturing resource pool for assemble is set up so as to organize, allocate and manage individualized and non-individualized resource according to the form of resource and resource group. In addition aiming at the problem of assembly manufacturing resource matching with final assembly planning under PM, the degree of resource capacity matching requirements is analyzed by means of manufacturing resource matching matrix and two-dimension capacity model under time-scale network diagram. And then resource conflict resolution is carried out by queue discipline and time-buffer of tasks, so as to increase the feasibility of final assembly scheduling.Through the product development platform for quick response to customer production planning management software function system is designed and developed which has be implemented in a wind turbine manufacturing enterprise. The application of software platform can remarkably improve the level of production management and the efficiency of business process, at the same time proves the validity of theory and main methods of this paper.