Users can use the resources distributing on isomerous network and operating system pellucidly with the support of middleware 中间件支持用户透明的使用分布在异构网络和操作系统上的资源。
2.
It becomes more difficult to manage , integrate and share the control system real - time data when we set up the industrial real - time database because of complicated affair between every department and isomeric character of the system . a three - level - structure model and the method to establish database is provided based on corba criterion with its character of being regardless of programming languages , hardware platform and network protocol . a universal real - time database faces multi - system is also set up by learning the distributed criterion , it can realize the request broker , and the application software can visit the database pellucidly ; thus the power station simulation model can be linked with the control system such as infi90 , ovation and be made use of the control object , a closed simulation and control experiment system is set up 在创建工控领域实时数据库时，企业各部门间的复杂事务及内部异构性给实时数据的管理、集成和共享带来了一定的困难，根据corba规范具有语言无关性、平台无关性和网络协议无关性的特点提出基于分布式计算规范corba的三层体系结构模型及建立与维护实时数据库的方法和途径；通过corba规范建立面向多个分散控制系统的通用实时数据库，实现数据访问代理，使应用软件可以透明地对实时数据库进行访问、存取、管理；将infi90 、 ovation分散控制系统与火电厂仿真机模型进行有效的互连，以全物理过程仿真数学模型为对象，构建了闭环控制仿真实验研究系统，实现数据的高效连通及管理；进而通过基于corba的实时数据库构建一个从火电厂仿真机对象到过程控制设备再到sis系统的综合自动化试验平台。
