Switched Ethernet in Synchronized Distributed Control Systems Using RTnet

被引：4

作者：

Boncagni, Luca ^{[1
]}

Barbalace, Antonio ^{[2
]}

Sadeghi, Yahya ^{[3
]}

Pompei, Marco ^{[3
]}

Zaccarian, Luca ^{[3
]}

Sartori, Filippo ^{[4
]}

机构：

[1] Assoc Euratom ENEA Fus, Frascati Res Ctr, Div Fus Phys, I-00133 Rome, Italy

[2] Consorzio RFX, Associaz Euratom ENEA Fus, I-35127 Padua, Italy

[3] Univ Roma Tor Vergata, Dept Comp Sci Syst & Prod, I-00133 Rome, Italy

[4] Fus Energy CODAC, Barcelona 08019, Spain

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2011年 / 58卷 / 04期

关键词：

Gigabit ethernet; linux; plasma fusion; real-time; RTAI; RTnet; switched ethernet; synchronous ethernet; timing network; PLASMA CONTROL; LINUX;

D O I：

10.1109/TNS.2011.2156427

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We adopt a model of a real-time distributed network where the synchronization is done by an external timing network that triggers the acquisitions. A Switched Ethernet is used to send the synchronously sampled data from nodes to nodes to perform the distributed control algorithm. In order to guarantee low latencies and jitter, the traffic on the Switched Ethernet must be carefully analyzed to be able to correctly model closed-loop systems and potentially identify events that might lead to large delays or even packet losses. In this paper we discuss the most relevant results from a testbed control network with synchronous data acquisition nodes. A switched Gigabit Ethernet is adopted and each node uses RTnet running in a RTAI/Linux Operating System. To resolve the problem of timing uncertainties at the data link layer, we propose a new custom solution based on a TDMA discipline.

引用

页码：1793 / 1799

页数：7

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