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A Flexible BOM Structure Based on AND/OR Tree and Its Automatic Method of Diagnosis

Author: ZhuQiZuo
Tutor: WangZuo；JinYiFu
School: Chongqing University
Course: Computer technology
Keywords: BOM Variant Design AND-OR tree Troubleshooting Model-based diagnosis
CLC: TP391.7
Type: Master's thesis
Year: 2008
Downloads: 66
Quote: 0
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Abstract


Bill of materials (BOM) is the enterprise product manufacturing process, different departments, different processes to transfer data between the basic form of the integrated management of the enterprise information link. Therefore, BOM structure design and maintenance of the correctness of data in enterprise information management are very important elements. In this paper, the BOM flexible definition and merchandise allocation issues related to research, analysis of the common structure of the BOM BOM structure and describe the characteristics of the three kinds of prospected BOM structure, summed up the disadvantages of existing BOM structure proposed BOM deformation design problems, through the BOM architecture research and study, using artificial intelligence techniques proposed based on the BOM structure or tree. Model-based diagnostic techniques and combining BOM error diagnosis, defining a kind of BOM diagnosis model, and finally make a systematic analysis of the diagnostic structure, given the direction of future development. For the BOM variant design issues, this paper analyzes the composition of the product, and then from the product structure of the flexible features of departure, through the extension of the traditional product structure tree, the formal definition of a product based on a tree structure or form, and gives the relevant BOM data table design and task-oriented product configuration. Facts show that: the flexible BOM structure not only allows dynamic configuration of the product structure, reflects the consistency of product management, but also significantly reduce the product variant design data redundancy, so that a unified BOM data management is guaranteed. BOM data for maintenance issues, this paper model-based diagnostic techniques and combining BOM error diagnosis, the realization of the product structure automatically diagnose semantic errors. To make the model diagnostic techniques to be applied, the paper defines the BOM of a diagnostic model and gives the product structure and product configuration logic description in the form, and the introduction of product configuration sample collection as the desired outcome of the system, through the associated model diagnostics algorithm, thus realizing the BOM error diagnosis. On this basis, the paper also implemented a prototype diagnostic system, the test results show that this is an effective diagnostic method. This paper presents a flexible tree based on BOM structure or method, this method in the product configuration and BOM data is passed does not require additional configuration parameters, you can keep the consistency of product data strap; article proposed a Automatic for the product structure error diagnostic method to achieve a BOM diagnostic system prototype.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Machine-assisted technology
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