FF现场总线系统实时通信的分析及启发式调度(英文)

Analysis and Heuristic Scheduling for Real-time Communication in FF System

本文研究了单网段 FF现场总线系统中具有时间约束和次序约束的远程周期信息的实时通信 ,通过调整释放时间和截止期来考虑和描述它们的通信次序约束 ,并提出了一种简单、有效的基于启发式的 FF调度时间表的构建算法 ,以保证远程周期信息的时间约束。

In a single segment Foundation Fieldbus system,the remote periodic messages not only have time constraints but also often have precedence constrains.In this paper,the precedence constrains are considered and described by modifying release time and deadline,and a simple and effective heuristic algorithm used to build FF schedule time list is proposed to meet the time constraints of all remote periodic messages.