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Experimental evaluation of time-redundant execution for a brake-by-wire application

Joakim Aidemark (Institutionen för datorteknik) ; Jonny Vinter (Institutionen för datorteknik) ; Peter Folkesson (Institutionen för datorteknik) ; Johan Karlsson (Institutionen för datorteknik)
International Conference on Dependable Systems and Networks, 2002. DSN 2002. Proceedings p. 210-215. (2002)
[Konferensbidrag, refereegranskat]

This paper presents an experimental evaluation of a brake-by-wire application that tolerates transient faults by temporal error masking. A specially designed real-time kernel that masks errors by triple time-redundant execution and voting executes the application on a fail-stop computer node. The objective is to reduce the number of node failures by masking errors at the computer node level. The real-time kernel always executes the application twice to detect errors, and ensures that a fail-stop failure occurs if there is not enough CPU-time available for a third execution and voting. Fault injection experiments show that temporal error masking reduced the number of fail-stop failures by 42% compared to executing the brake-by-wire task without time redundancy.



Denna post skapades 2013-01-14.
CPL Pubid: 170445

 

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Institutioner (Chalmers)

Institutionen för datorteknik (2002-2004)

Ämnesområden

Datorteknik

Chalmers infrastruktur