| This paper is derived from the research and development of life-cycle quality control and management on the wind power products for DHI Gear Reducer. With its own production features, made an in-depth research on the quality management of the company follows ideas such as the theory of TQM, Statistical Process Control and so on, product's life-cycle quality information flow is ascertained. So the function aim of system is according to the study of the collection, feedback, statistic and analysis of data and the consideration of the characteristics during the process of the formation of product's quality. The frame model of information center based on the closed-loop feedback control management mode is brought forward then and the information system of quality management is developed and implemented.The system is divided into three subsystems: digital-information management, standard-execution management and visual-feedback management. Upon thorough in-depth analysis of the technique standards of gearbox production, digital-information management subsystems respectively build quality BOM facing all quality activities during the process production. The quality BOM is product structure and configuration oriented and maximally solves the dispersion problem of quality data, which is a reasonable and effective carrier and organization of product quality data flow. And on this basis, the fault code model is proposed. Standard-execution management subsystems integrate craft information, manufacturing process information and standard information for service process monitoring. And the control charts are divided into two stages as analyze-control chart and control-control chart. With the effective integration of histogram and causality diagrams the processing capacity of the current process could be determined by this system automatically on which the adjustment could be done; Visual-feedback management receives the analysis results from all stages of the control initiatively. According to the order and depth of the products, parts and process, the scattered quality characteristics information from all control points are linked to the contract, products and related information. By this way, all perspective supervising and control to product's quality are provided to leaders. Meanwhile, according to the requirements from the relevant departments of the different ranks in enterprise, the subsystem feedbacks and analyses these data to form useful as well as intuitive management information to support managers' decision. Therefore the quality information flow's close-loop feedback control is realized. The system is developed using Visual Studio 2008 and Microsoft SQL Server 2000 platforms.In the end the author illustrates the implementation of the system, which realizes data collection, information analysis and decision support during the process of producing quality. The practice of software shows that the approaches in this dissertation are effective and practicable. |
