This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Efficient Testing and Cost Awareness: Low-Cost versus HIL-System
Technical Paper
2012-01-0933
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Developments for innovative systems in engines, hybrid and
electrical vehicles are strongly affected by a high pressure on
costs, short development cycles and high quality requirements.
Therefore within the business unit Powertrain Systems of Bosch
Engineering GmbH (BEG) test environments for SW functions in engine
control units (ECU) are selected according to cost and efficiency
aspects as well as availability. Prototype vehicles are very
expensive and cannot always be provided in time by vehicle
manufacturers. Closed-loop test systems like hardware-in-the-loop
systems (HIL) are alternatives to perform system tests of ECUs in a
vehicle simulation. We propose to consider the usage of low-cost
solutions with reduced costs in many cases. At the same time due to
these saving effects the number of test systems in an organization
can be increased significantly. This enhances the availability of
testing equipment for engineers.
The low-cost approach is equipped with an 8-bit microcontroller
that governs a small number of analog and digital inputs and
outputs and provides basic CAN functionalities. Test systems like
the proposed μLabCar cover a large part of the use cases for
testing of systems and software. Tests can be performed either
manually using a graphical user interface or automatically using a
commercial tool or a scripting language. The μLabCar could also be
controlled remotely via the company network - an advantage that is
very useful for distributed development teams, e.g., for
cooperation with subsidiaries in Europe, Asia and the US.
The authors discuss why, when and under which boundary
conditions simple low-cost test systems are a good alternative in
terms of economy and quality compared to other test systems like
full HIL systems.
Recommended Content
Topic
Citation
Mueller, S. and Langjahr, P., "Efficient Testing and Cost Awareness: Low-Cost versus HIL-System," SAE Technical Paper 2012-01-0933, 2012, https://doi.org/10.4271/2012-01-0933.Also In
References
- Bosch Engineering GmbH “Service area Powertrain” http://www.bosch-engineering.de//en/whatweprovide/serviceareas/powertrain.aspx September 2011
- “Hardware-in-the-loop simulation” http://en.wikipedia.org/wiki/Hardware-in-the-loop_simulation September 2011
- Waeltermann, P. dSPACE GmbH “Hardware-in-the-Loop: The Technology for Testing Electronic Controls in Automotive Engineering” 6th Paderborn Workshop “Designing Mechatronic Systems” Apr 2009
- Crepin, J. Liebau, H. “Simulating Peak Performance” ETAS Magazine Realtimes 2 2010 1 2011
- Palladino, A. Fiengo, G. Giovagnini, F. Lanzo, D. “A Micro Hardware-In-the-Loop Test System” IEEE European Control Conference 2009
- “V-Model” http://en.wikipedia.org/wiki/V-Model September 2011
- Schaeuffele, J. Zurawka, T. “Automotive Software Engineering” 4th Vieweg+Teubner Wiesbaden, Germany 978-3-8348-0364-1 2010
- Langjahr, Petra Peitzsch, Tobias Lorenz, Petra Müller, Stefan Buchner, Peter “Efficient Testing in SW Development for Engine Control Units” “Simulation und Test für die Automobilelektronik III Expert Verlag Renningen, Germany 978-3-8169-3023-5 2010
- MISRA-C 2004 Guidelines for the Use of the C Language in Critical Systems” http://www.misra-c.com/ September 2011
- Lachmann, Stefan Steinlechner, Andreas “Embedded Software Systeme systematisch und durchgängig testen” “Simulation und Test für die Automobilelektronik III” Expert Verlag Renningen, Germany 978-3-8169-3023-5 2010
- TPT, Time Partition Testing “TPT - model based control system testing and verification” http://www.piketec.com/index.php September 2011
- ISO 26262-6:2011 Road vehicles - Functional safety - Part 6: Product development at the software level http://www.iso.org September 2011