【作者】 王军； 王宏； 曾鹏；

【Author】 Wang Jun Wang Hong Zeng Peng (1 Key Laboratory of lndustrial Informatics Shenyang Institute of Automation CAS Shenyang 110016 China 2 Graduate School of the Chinese Academy of Sciences Beijing 100039 China)

【机构】 中国科学院沈阳自动化研究所工业信息学重点实验室； 中国科学院研究生院；

【摘要】 本文针对工业网络化控制系统通信任务执行特点,提出了根据工业网络化控制系统上层通信任务调度表进行分配的无竞争期的混合CAP和CFP的MAC协议(HAF-MAC)。该协议兼顾了工业网络化控制系统上层下达的周期性通信任务和非周期性通信任务在数据链路层中的实时调度。通过仿真证明,与现有典型的MAC协议比较,该协议有效减少系统平均时延和提高了系统的吞吐量,显著提高了系统的实时性。更多还原

【Abstract】 In this paper,according to perform features of communications task on industrial network control system,the Hybrid CAP and CFP MAC (HAF-MAC) is proposed.It distributed non-competition period based on communications task scheduling table of industrial network control system.The protocol take into account real-time scheduling of cyclical communications tasks and non-cyclical communications tasks in the data link layer.The simulation shows that the protocol effectively reduced the system’s average delay and improved the system’s throughput than the existing and typical MAC protocol,and significantly increased the system’s real-time.更多还原