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Research on the real-time performance of power lithium battery assembly line based on can bus

机译：基于can bus的动力锂电池装配线实时性能研究

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Power lithium battery assembly production line adopts the distributed control system based on CAN bus, is divided into two levels, namely the station control layer( lower computer) and the production line management and control layer(IPC). Each station are connected to the CAN bus as a network node. In such multi-node and high load system, the standard CAN communication protocol can only ensure real-time transmission of high priority messages in the network, the real-time capability of low priority messages will reduce with the increase of the load, several competing failure will lead to uncertain delay of lower priority message transmission, even appear the phenomenon that the message is unable to send, cause packet loss and the station is jammed, resulting in the assembly is not normal. Based on this, this paper proposes a hybrid scheduling algorithm of the hierarchical structure, which combines the DMS algorithm and EDF algorithm in the index partitions, on the basis of the system real-time capability, not only make the system have higher bandwidth utilization, but also reduce the consumption of system resources.
机译：动力锂电池组件生产线采用基于CAN总线的分布式控制系统，分为站级控制层（下位机）和生产线管理控制层（IPC）两级。每个站都作为网络节点连接到CAN总线。在这种多节点，高负载的系统中，标准的CAN通信协议只能保证网络中高优先级消息的实时传输，低优先级消息的实时能力会随着负载的增加而降低，有几种竞争故障将导致优先级较低的消息传输不确定的延迟，甚至出现消息无法发送，导致丢包和站点阻塞的现象，从而导致组装不正常。在此基础上，提出了一种分层结构的混合调度算法，在系统实时能力的基础上，将DMS算法和EDF算法结合在索引分区中，不仅使系统具有更高的带宽利用率，而且还减少了系统资源的消耗。

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