Timely use of the CAN protocol in critical hard real-time systems with faults
- 13 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The presence of network errors such as electrical interference affects the timing properties of a CAN (Controller Area Network) bus. In hard real-time systems it is often better to not receive a message than to receive it too late. Aborting late messages is a form of real-time error confinement which prevents late messages affecting the timeliness of other messages and processes. This can be used to help guarantee hard real-time performance in a distributed system using CAN in the presence of unbounded network errors.Keywords
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