基于反馈控制的过程控制实时数据库系统设计  

Design of process control real-time database based on feed back control theory

作　　者：周亦敏[1] 顾宇俊[1] 

机构地区：[1]上海理工大学计算机工程学院,上海200093

出　　处：《计算机工程与设计》2008年第12期3197-3200,共4页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2005AA420070);上海市教委2005科技发展基金项目(05EZ48);上海市教委2005重点课程建设基金项目(05K507)

摘　　要：研究了当前先进过程控制系统的软件体系结构,针对复杂过程控制系统中的海量数据,设计了一种基于反馈控制的实时性能优良、硬件局限性小的全开放式实时数据库模型。在该控制系统的软件体系中,依据优化数据库缓冲区管理算法的原则,设计并应用了先进的内存页面置换算法,增强了实时数据库的实时性能,改善了海量数据对物理内存的瓶颈要求。基于该算法的FD_RTDB数据库已在过程控制领域得到实际应用。The structure of advanced process control system is studied. An open RTDB model having high real-time performance and little hardware restriction is presented to direct against huge data streams in complicated process control system. An advanced RAM page exchange algorithm is used in this software structure according to the policies of optimizing the RTDB buffer management algorithms. The real-time performance of RTDB is optimized and the restriction of RAM in systems having huge data streams is reduced. FD_RTDB based on this algorithm is applied to many fields of process control.

关 键 词：过程控制 实时数据库 反馈控制 缓冲区管理 基于截止期的LRU算法 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]