| BOM structure transformation can be summed up in order to increase components, remove components, BOM and BOM structure refinement of structural adjustment decomposition and so on. BOM structure corresponding to the above-mentioned four kinds of conversion operations, the definition of four kinds of BOM structural transformation operator, respectively, combined operator delete operator to adjust operator and decomposition operator. Four kinds of graphical representation of operator. A combination of four kinds of operators, BOM transformation process can be achieved in the structural transformation that may occur. EBOM removed and spare parts, purchased parts, according to process request for additional craft items or adjust the EBOM the structure, not easy to process further decomposition of the components to complete the EBOM to PPBOM conversion. Process design department in accordance with the assignment of PPBOM process design, remove the virtual items do not need to create, add and process required to process the materials, sub-assembly information, complete the PPBOM to MBOM conversion. The use of BOM structure transformation operator, transformation process. Four kinds of BOM structure transformation operator to make the process of maintaining the BOM structure transformation of the inheritance of information and consistency. BOM Property Map. BOM attribute inheritance model transformation can be divided into mapping and derivative-based mapping two kinds of types. Inheritance type mappings Direct reference to the original BOM attribute. The new BOM be inherited from the properties of the original BOM and the direct use of the new BOM attributes consistent with the original BOM attributes, this mapping components targeted properties, material properties and other basic data. The derivative-based mapping Apply to property derived from the situation. According to the properties of the original BOM, through derivative and reasoning to generate new BOM properties, old and new attribute is logical causation. Type maps derived either by direct inference to be the original BOM New BOM attribute properties can also be converted after several attributes or use other information that new BOM attribute reasoning. MBOM reference components EBOM in the design attributes, are inherited type mapping; PPBOM components in the preparation of units is based on reasoning derived component design information, and a direct derivative type mapping; MBOM assembly sequence information process designed to get their raw materials and manufacturing resource information is also assembly process reasoning process information received, are indirectly derived type mapping. Can be seen through the BOM structure transformation and the properties of a combination of mapping applications, you can PDM system EBOM by PP-BOM converted into ERP required MBOM, so that between PDM and ERP systems to achieve the semantic integration of information on line. Integrated mode and mechanism of PDM systems need to integrate the information through the conversion and mapping, form a line with ERP system requirements MBOM information may be used for the ERP system. Between the two systems through the integration of the semantic integration of information exchange and sharing of transmission. PDM and ERP systems integration approach PDM and ERP systems independent of each other, different data organization is a heterogeneous systems, integrating the two systems are coordinated by the completion. The flow of information from the system integration in terms of direction and initiative, PDM and ERP systems integration approach, including PDM initiative, ERP initiative, the initiative three kinds of the two systems together. PDM proactive approach by the PDM system will require integration of information and documents passed to the ERP data environment in an open and informed the ERP system, read the information. The way to ensure that the information integration between the two systems while also ensuring data synchronization features. The remaining two kinds of ways due to lack of data synchronization mechanism of protection, ERP system is unable to timely access to integrated information, reducing the efficiency of integration. Therefore, PDM proactive approach is a more satisfactory level of integration.
Based on integrated information model of integration mechanisms In the ERP system, according to the establishment of integrated information model for data storage structure, corresponding to materials, levels of structure and resources relevant information, to provide an open data environment, as well as external systems to read and write information for the interface method, while providing a message listener service. PDM system based on integrated information model of product information to re-organize and extraction, through the ERP system, an open data environment interface, the system will be converted PDM product-related information is written to open the data environment, to realize an integrated information transfer. Information transfer is complete, PDM systems using network messaging mechanism to send an integrated ERP system, complete the message. ERP system, the message listener service to receive this news, the main program and the staff informed the ERP data environment from the open to receive the information has been integrated, and its application to production planning and manufacturing. Way through the above system integration, ERP systems can be timely and accurate access to integrated information and, based on PDM system to respond to input information to avoid the lack of communication caused a waste of system resources, improve the efficiency of integration.
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