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A Framework for Establishing Performance Guarantees in Industrial Automation Networks

机译:在工业自动化网络中建立性能保证的框架

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In this paper we investigate the application of Network Calculus for industrial automation networks to obtain performance bounds (latency, jitter and backlog). In our previous work we identified the modeling of industrial networks as the most challenging aspect since in industry most users do not have detailed knowledge about the traffic load caused by applications. However, exactly this knowledge is indispensable when it comes to modeling the corresponding arrival curves. Thus, we suggest the use of generalized traffic profiles, which are provided by the engineering tool. During the engineering process, the user has to specialize these profiles to meet the application configurations. The engineering tool derives the corresponding arrival curves from the specialized profiles and calculates the performance bounds using Network Calculus. To guarantee that the calculated performance bounds are kept during the runtime of the industrial automation, we must ensure that the real traffic flows do not exceed their engineered arrival curves. We therefore propose the use of shapers at the edge of the network domain. The shaper configurations can be automatically derived from the engineered arrival curves of the flows.
机译:在本文中,我们研究了网络演算在工业自动化网络中的应用,以获取性能范围(延迟,抖动和积压)。在我们以前的工作中,我们将工业网络的建模确定为最具挑战性的方面,因为在行业中,大多数用户不了解有关应用程序导致的流量负载的详细知识。但是,在对相应的到达曲线进行建模时,正是这些知识必不可少。因此,我们建议使用工程工具提供的通用流量配置文件。在工程设计过程中,用户必须专门设置这些配置文件才能满足应用程序配置。工程工具从专门的配置文件中得出相应的到达曲线,并使用网络演算来计算性能范围。为了确保在工业自动化运行期间保持计算出的性能范围,我们必须确保实际流量不超过其工程到达曲线。因此,我们建议在网络域的边缘使用成形器。整形器配置可以从流的工程到达曲线自动得出。

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