CIMS设计过程中存在的一些问题及解决方案

提出了一种新的集成的I2 DEF方法 ,并介绍了与之配套的设计开发工具 ,用以支持大型复杂信息系统的设计与开发 ,它可以成功地解决计算机集成制造系统设计开发过程中遇到的许多问题。本文指出了我国CIMS工程存在的问题 ,分析了这些问题产生的原因 ,并结合企业实际给出了应用I2 DEF方法的解决方案。

Object interoperability behavior represents dynamic evolution and cooperation of a group of objects in accomplishing a task. The behavior description and abstraction of object interoperability is the basis of application  oriented object interoperability and is a main aspect of implementing distributed object interoperability. In this paper, a activity model is presented to express the behavior semantic of object interoperability, including the temporal ordering of message exchanges within object interoperability and the behavioral relationships between activity executions. In addition, two behavior abstract mechanisms, activity specialization and activity aggregation, are proposed to realize reuse of object interoperability behavior in this model. The former is suited for behavioral refinement of existing activities into specialized activities. The latter is used for behavioral composition of simpler activities into complex activities. First  order temporal logic is used as an underlying formalism for the activity model. Finally, the integration of class schema and activity schema is discussed and a methodological framework for the integration is proposed.