Automatic Evaluation of ECU Software Tests 2005-01-1659
When testing electronic control unit (ECU) software, test stimuli as well as test results are time-dependent signals. In order to effectively achieve high quality testing during development, the approved results of former tests serve as reference data for regression and back-to-back tests. The evaluation of those tests leads to a new task, the trustworthy comparison of time-dependent signals. To carry out this task we developed new concepts for signal comparisons and a tool, called MEval, for automating the test evaluation. Given a reference and a current result signal as inputs MEval evaluates their similarity. A new variant of a dynamic time warping algorithm, called difference-matrix preprocessing, allows an independent assessment of amplitude deviation and possible time shifts.
Using the automatic test evaluation we defined an integrated test process for the model-based development of ECU software. In this process, regression and back-to-back-tests are performed, automatically evaluated and released. We thus gain reproducible and trustworthy regression and back-to-back test evaluations leading to higher quality.
Affiliated:
DaimlerChrysler AG, Research and Technology, IT Power Consultants
Pages: 12
Event:
SAE 2005 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Controller System Software Testing and Validation-SP-1928, SAE 2005 Transactions Journal of Passenger Cars: Electronic and Electrical Systems-V114-7
Related Topics:
Electronic control units
Computer software and hardware
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