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A model for fault-tolerant networked control system using TTP/C communication

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1 Author(s)
Patankar, R. ; Dept. of Mech. Eng. & Eng. Mech., Michigan Technol. Univ., Houghton, MI, USA

Safety-critical aerospace functions are generally required to have failure rates less than 10-9 per hour, and an architecture that is going to support several such functions is required to have failure rates less than 10-10 per hour. Though the requirement for an individual automobile may be more relaxed, similar requirements apply for automobiles in general because of their large number compared to aircraft. Consumer-grade electronics have failure rates orders of magnitude worse than this. Hence, redundancy to improve failure rates and fault tolerance to prevent faults from propagating, both are essential elements of a safety critical networked control system (NCS). TTP/C is a member of the TTP (time-triggered protocol) family that satisfies SAE Class C requirements for hard real-time fault-tolerant communication. A model is presented for a fault-tolerant NCS using TTP/C communication. Appropriate features of TTP/C are incorporated in the model.

Published in:

American Control Conference, 2003. Proceedings of the 2003  (Volume:1 )

Date of Conference:

4-6 June 2003