Testing degradation in a complex vehicle electrical system using Hardware-In-the-Loop
Functionality in the automotive industry is becoming more complex,
withcomplex communication networks between control
systems. Information isshared among many control systems and extensive
testing ensures high quality.
Degradations testing, that has the objective to test functionality
with some faultpresent, is performed on single control systems, but is
not frequently performed on the entire electrical system. There is a
wish for testing degradation automatically on the complete electrical
system in a so called Hardware-In-the-Loop laboratory.
A technique is needed to perform these tests on a regular
basis.Problems with testing degradation in complex communication
systems will bedescribed. Methods and solutions to tackle these
problems are suggested, thatfinally end up with two independent test
strategies. One strategy is suited to test degradation on new
functionality. The other strategy is to investigate effects in the
entire electrical system. Both strategies have been implemented in a
Hardware-In-the-Loop laboratory and evaluated.
Johannes Bergkvist
2009
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