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Real-time controller area networks (CAN) - managing transient surges

机译：实时控制器局域网（CAN）-管理瞬态浪涌

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摘要

Controller Area Network (CAN) is a control network protocol that can be found in a wide range of embedded systems. Control networks are inherently real-time local area networks (LANs) whose correct performance is specified in terms of the reliable and timely delivery of messages. These networks are typically required to provide long periods of uninterrupted service in harsh and dynamic environments. Under these conditions, the network is prone to transient-surges in loading that tend to upset temporal behavior. During transient-surges, it is highly desirable to sustain the timely transmission of critical messages. In this effort we describe a protocol that provides Quality of Service (QoS) support for critical real-time message transmissions under nominal conditions and during transient-surges. Our approach uses the CAN protocol in conjunction with a time-value scheduling algorithm. The QoS support for individual message transmissions considers system-state, network loading, and the value of pending messages with respect to time.
机译：控制器局域网（CAN）是一种控制网络协议，可以在许多嵌入式系统中找到。控制网络本质上是实时局域网（LAN），其正确可靠的性能取决于消息的可靠和及时传递。通常要求这些网络在恶劣和动态的环境中提供长时间的不间断服务。在这些条件下，网络在负载中容易出现瞬态浪涌，这会破坏时间行为。在瞬态激增期间，非常需要维持关键消息的及时传输。在这项工作中，我们描述了一种协议，该协议为标称条件下和瞬态激增期间的关键实时消息传输提供服务质量（QoS）支持。我们的方法将CAN协议与时间值调度算法结合使用。单个消息传输的QoS支持考虑系统状态，网络负载以及待处理消息的时间值。

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