Research on the integrated analysis and design env

2022-07-31
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The development of information, computer, automation technology and modern management theory has brought harsh living environment to manufacturing enterprises. Mass production based on inventory can no longer meet the market requirements of multi variety and small batch. Therefore, many new paradigms have been put forward for modern manufacturing systems recently. These new paradigms are not the negation of CIM, but the further improvement and development of CIM concept

cims has become the trend of manufacturing development in the 21st century. The key is that it can achieve overall integration. CIMS is a typical complex system, which needs to establish multiple view models at multiple levels and analyze, design and implement them. The integration of multiple models is a necessary condition to realize the overall integration of CIMS. The relation and correspondence between models are the concrete manifestation of integration. Only by establishing these models in a unified software environment and describing them in the same data format, can we realize the mapping between models and achieve the integration between models. Therefore, the software environment that integrates various modeling tools is the environment to realize the integration between models. In view of China's national conditions, we have done a lot of in-depth research on CIM methodology and different architectures and analysis methods, but the following are worth the attention of enterprises: 1. The growth rate of automobile production and sales with the largest weight in the total industrial output is picking up; 2. A set of CIMS modeling software and analysis tools suitable for China's real environment, that is, the overall integrated analysis and design environment of CIMS, has been developed

1 CIMS methodology

cims needs the guidance of system methodology. CIM methodology is an organic combination of a group of methods, which is used to guide and assist CIMS designers in CIMS analysis, design and implementation. It consists of three parts: (1) reference model architecture according to the needs of the problem; (2) A set of modeling methods and supporting tools; (3) A structured process that ensures progressive achievement of goals

1.1 reference model architecture

reference model architecture is a set of multi-level and multi view models representing all aspects of the entire integrated enterprise or CIM system. IFAC task force recommended CIM OSA, Purdue enterprise reference model and impact as reference architectures for CIMS analysis, design and implementation. Summarizing the view models in the current architecture, we can model the integrated enterprise from the following aspects: (1) function view; (2) Information view; (3) Resource view; (4) Organizational view; (5) Decision view; (6) Physical view; (7) Economic view, etc

however, these view models overlap in content and are generally selected according to specific requirements. According to the most basic and common principles, we first select the function view, information view, decision view and physical view to form the integrated enterprise model on the conceptual level. In this regard, we give the integrated enterprise reference architecture as shown in Figure 1

1.2 modeling method

modeling method is an organic part of CIM methodology. These methods are used to build various models in the reference architecture. IDEF0 method is used to create functional view and physical view; Grai method is used to establish decision view; E/R or ideflx is used to create information views

The physical system in the sense of CIM is an aggregation of production workshops based on production units. The workload and investment of physical system development occupy a large proportion in the whole CIMS development, so it has been paid great attention by the theoretical and industrial circles. Logistics analysis is the main theoretical basis and practical tool of physical system design. In the component processing department, logistics analysis is the best technology used to complete the plan for the transformation from the production organization structure to the product organization structure. However, in view of the lack of domestic research in this area, it is necessary to conduct a systematic and in-depth study

1.3 structured process

structured process generally decomposes the development process of CIMS in four stages: (1) initialization; (2) Analysis; (3) Design; (4) Implementation. This decomposition method has a clear corresponding relationship with the system structure of this paper when exploring the new development path of plastic granulator technology. It really plays a role in organizing various modeling methods and analysis methods, and reflects the integrity of CIMS method

2 CLMS overall integrated analysis and design environment

cims overall integrated analysis and design environment is based on the reference model architecture, modeling method and analysis means provided by CIM methodology, so as to assist CIMS designers to establish the models required in the CIMS analysis and design stage, analyze the inconsistency between models and within models, and evaluate the software systems of various design schemes. It should include various modeling tools, expert systems for detecting inconsistencies and inconsistencies, and expert systems for evaluating various schemes. The purpose is to realize the integration between models and the overall integration of CIMS. Based on the CIM methodology and the research achievements in CIM methodology, we have designed and developed the cimsgiade software system, which realizes the five main functions of modeling, analysis, report generation, evaluation and mapping between models. The following describes several aspects of software implementation

2.1 development environment

cimsgiade software runs on PC. It is developed in Borland c++ language under Windows environment. The reason why we choose this software and hardware environment is that: (1) microcomputer design is a more realistic and easier means and method to obtain benefits, especially suitable for small and medium-sized enterprises; (2) Windows environment can support the concurrent running of programs and complex graphic output. It has the characteristics of good interactivity, graphic output and standard interface objects; (3) Object-oriented technology provides strong support for software quality, software reusability and development process. All kinds of object-oriented c++ languages have their own class libraries. Users can make full use of them to improve work efficiency. The control of the experimental process is realized through the automatic control of single chip microcomputer. Borland c++ is recognized as the object-oriented language with the fastest compilation speed and a wide range of applications

finally, we selected FoxPro relational database, which we are familiar with, as an auxiliary development tool to complete the data dictionary module and realize the indirect mapping between models

2.2 technical design the main contents of the technical design stage are: (1) modular design; (2) User interface object design; (3) Determine the objects in each module and the relationships between them. Among them, the design of user interface object integrates the four graphers into a unified software environment. The software framework structure is shown in Figure 2

the modules that need to be highlighted are:

(1) analysis module: the analysis module is a very important part of the integrated environment. It mainly relies on a set of consistency and coordination detection rules to analyze the existing system models, correct the formal and semantic inconsistencies between and within the models caused by insufficient understanding of the system in the modeling process, and help users find out the problems in the system. Among them, the detection rules are summarized and refined according to the grammar rules of graphic tools, management theory, decision-making theory, information technology and other theoretical knowledge and various empirical knowledge

(2) data dictionary: for an enterprise, it is very necessary to uniformly manage the public data and special data in the project. The data dictionary is an auxiliary tool for data, defining and describing all data items. In CIMS, different models such as grai lattice, grai, IDEFO and ideflx have different data forms. The data dictionary provides a common interface for each model. The data of each model is managed in the same data form, indirectly realizing the mapping between models. It stores and manages the model information in the project, and is the basis for studying the relationship and integration between models

3 application examples

we have made pilot applications of CIM methodology in Zhengzhou Textile Machinery Factory and Xi'an aircraft company. In Zhengzhou Textile Machinery Factory, through the application of methodology, the logistics and information flow between the second production unit and other production units and management departments of the second machinery branch were unblocked, the productivity of the second machinery branch was improved, and the bottleneck problem of the whole factory was solved, so as to improve the productivity of the whole enterprise and enhance the adaptability to the market. In july1993, it began to carry out pilot application in Xi'an aircraft company, established the decision-making model and functional model of the whole plant and the NC workshop, carried out the technical analysis and structural design of the expansion of the NC workshop, and tried to establish the physical model of the existing and expanded NC workshop

as a general integrated environment software, this method and software have been fully affirmed by the manufacturer and praised by experts from all sides. In particular, the decision-making model established by grai method is concise and easy to understand, which is deeply loved by users and worth popularizing. Facts have proved that the CIMS integrated analysis and design environment is a very intuitive and effective graphical tool for CIMS modeling, analysis and design. It can promote the popularization and application of CIMS in China

4 conclusion

this paper puts forward the CIM methodology suitable for China's national conditions, emphasizes the importance of logistics analysis, and expounds the CIMS overall integrated analysis and design software environment we developed. The software has many technical and functional characteristics superior to similar software at home and abroad. The multi model integrated modeling method we used has formed a more complete understanding of the mode of modern manufacturing system, is helpful to improve the organization and management structure, and can provide a guide for the promotion of CIMS technology to analyze the low thermal conductivity of plastics. It can also provide a method and software foundation for the research of key problems such as multi model integration, and a set of practical methods for complex system modeling

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