Research on the Time Delay of Controller Area Network for Vehicle

Controller Area Network (CAN) play a vital role in the trend of network connectivity and intellectualization for vehicle, while some performances including reliability and real-time are facing the challenge due to the higher load rate of network. Time delay of CAN bus has become the urgent focus because the vehicle safety is decided by the instantaneity of bus during high-speed driving, especially for the driverless vehicle. In this study the mechanism of CAN bus can be reviewed, and different types time delay will be analyzed. In addition, the model of on-bus delay of message is established under the EMI environment, and simulations will be gained and researched. Considering the tremendous difficulty to eliminate time delay of CAN bus, more means should be adopted to cope with the rigorous challenges.