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题名: The effect of pass token period on realtime communication of urgent aperiodic message and its improvement
作者: Wang Z(王智); Dai HP(戴华平); Chen JM(陈积明); Song YQ(宋叶琼); Wang TR(王天然); Sun YX(孙优贤)
作者部门: 工业控制系统研究室
会议名称: IEEE International Symposium on Industrial Electronics, ISIE 2003
会议日期: June 9-11, 2003
会议地点: Rio de Janeiro, Brazil
会议录: 2003 IEEE International Symposium on Industrial Electronics, ISIE 2003
会议录出版者: IEEE
会议录出版地: Piscataway, NJ, USA
出版日期: 2003
页码: 472-477
收录类别: EI
ISBN号: 0780379128
摘要: The key to success in using distributed control system (DCS) is the timely execution of computational tasks which usually reside on different nodes and communicate with one another to accomplish a common goal. Therefore, the temporal property of the underlying network is important, and special-purpose realtime industrial network is needed. Foundation fieldbus (FF), which is characterized by explicitly distinguishing periodic and aperiodic message, is one of the network kinds. FF applies centralized media access mechanism (MAC) to support periodic message, and distributed MAC to support aperiodic message. As for aperiodic message, this paper indicates FF's current mechanisms can't effectively obtain its expected object of guaranteeing important aperiodic message although PT priority and PT rotation period are applied. Furthermore, detailed analysis expresses method of counting PT rotation period is the main cause. Then, an improved method is proposed, and accordingly, a method of setting PT rotation period is deduced. A numerical case validates the effects of the improved method.
语种: 英语
产权排序: 3
内容类型: 会议论文
URI标识: http://ir.sia.cn/handle/173321/17219
Appears in Collections:工业信息学研究室_工业控制系统研究室_会议论文

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