The demands on safety and reliability of fast automotive communication systems like controller area network (CAN) or CAN with flexible data rate (CAN FD) grow with the increasing use of highly automated driving functions in future vehicles. As the vehicular electromagnetic environment is very challenging, electromagnetic interference (EMI) and cable coupling in the extended wire harness are important issues. In particular, modern power electronic systems for electric driving with fast switching semiconductors can cause severe electromagnetic interference in nearby electronic systems, such as bus systems. Power electronic devices are often controlled by periodic pulsewidth modulation signals, so interference in communication systems is also periodic. The periodic disturbances in the transmission channel can result in a significant reduction in the effective data rate and high latency. This article introduces and analyzes the possibilities of cooperative operating concepts of EMI sources and a modified CAN FD communication system. Source and sink of electromagnetic emissions are considered together to minimize the influence of common and differential mode disturbances on the data transmission. In the proposed concept, data transmission is synchronized to a known major disturbance source, e.g., the motor inverter for electric driving. A much faster and more reliable data transmission with low latency can be realized.

中文翻译：

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周期性干扰CAN FD网络中鲁棒数据传输的协作操作概念分析

随着未来车辆中高度自动化驾驶功能的使用越来越多，对控制器局域网 (CAN) 或具有灵活数据速率的 CAN (CAN FD) 等快速汽车通信系统的安全性和可靠性的需求也不断增长。由于车辆电磁环境非常具有挑战性，因此延长线束中的电磁干扰（EMI）和电缆耦合是重要的问题。特别是，具有快速开关半导体的用于电力驱动的现代电力电子系统可能会对附近的电子系统（例如总线系统）造成严重的电磁干扰。电力电子设备通常由周期性脉宽调制信号控制，因此通信系统中的干扰也是周期性的。传输通道中的周期性干扰可能导致有效数据速率显着降低和高延迟。本文介绍并分析了 EMI 源协同操作概念和改进的 CAN FD 通信系统的可能性。电磁辐射的源和汇被一起考虑，以最大限度地减少共模和差模干扰对数据传输的影响。在所提出的概念中，数据传输与已知的主要干扰源同步，例如用于电力驱动的电机逆变器。可以实现更快、更可靠、低延迟的数据传输。