Fault-tolerant Clock Synchronization with Drift Correction for Controller Area Network

Date

2023-01-01

Author

Acar, Tan Çağatay
Schmidt, Klaus Werner

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Clock synchronization (CS) on the Controller Area Network (CAN) is important for enabling deterministic medium access for safety-critical vehicle applications. Existing CS methods on CAN rely on the synchronization of all nodes on a CAN bus to a single time master (TM). That is, if there is a fault in the TM, CS on CAN becomes impossible. In this paper, we propose a new fault-tolerant CS method with drift correction for CAN. Our method ensures that a faulty TM is detected and replaced by an alternative TM without any effect on the clock accuracy of all nodes on the CAN bus. Our method achieves a clock accuracy below 3 mu s even in the case of frequent faults, which is confirmed by hardware experiments with fault injection.

URI

https://hdl.handle.net/11511/118657

DOI

https://doi.org/10.1109/siu59756.2023.10223994

Conference Name

31st IEEE Conference on Signal Processing and Communications Applications (SIU)

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Citation Formats

T. Ç. Acar and K. W. Schmidt, “Fault-tolerant Clock Synchronization with Drift Correction for Controller Area Network,” presented at the 31st IEEE Conference on Signal Processing and Communications Applications (SIU), İstanbul, Türkiye, 2023, Accessed: 00, 2026. [Online]. Available: https://hdl.handle.net/11511/118657.