2010 IEEE International Conf. on Dependability of Computer Systems - DepCoS

Delay Based SWIFI Approach to ABS Dependability Analysis Dawid Trawczynski, Janusz Sosnowski Warsaw University of Technology Institute of Computer Science Nowowiejska 15/19, 00-665 Warsaw, Poland email:d.trawczynski@ii.pw.edu.pl

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Motivation ,[object Object],[object Object],[object Object],[object Object]

Problems in Dependability Analysis ,[object Object],[object Object],[object Object],[object Object]

Fault Injection via Simulation ,[object Object],[object Object],[object Object]

Fault Models ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Task Execution Delay Fault : fault-free task i execution time : faulty task i execution time, where is the time perturbation random variable

Integrated Simulation Environment Real-Time Simulator and Fault Injector integration: TrueTime + Matlab/Simulink + FITS + MSVC

Anti-Lock Braking System Case Study

Experiments ,[object Object],[object Object],[object Object],[object Object]

Correlation of Performance , Task Deadline Misses and Time of Fault Susceptibility X: lambda (interval of fault susceptibility) Y: TDM (task deadline miss ratio) Z: stopping distance (meters)

The Effect of TEF Faults on ABS Performance

Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object]

2010 IEEE International Conf. on Dependability of Computer Systems - DepCoS

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2010 IEEE International Conf. on Dependability of Computer Systems - DepCoS