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FMI for Physics-Based Models on AUTOSAR Platforms
Technical Paper
2017-26-0358
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
As automobiles become increasingly smarter, the need to understand within the automotive software the physical behavior of its parts is growing as well. The laws of physics governing such behavior are mostly formulated as differential equations, which today are usually created or obtained from various modeling tools. For solving them, the tools offer several solvers to satisfy the requirements of different problems. E.g. simple and fast explicit low order solvers for non-stiff problems and more complex implicit solvers for stiff problems.
Though the modeling and code generation features as available in such tools are desirable for embedded automotive software, they cannot be used directly due to special restrictions with respect to hard realtime constraints. One such restriction is the organization of automotive software in components complying with the AUTOSAR standard which is not widely supported by the modeling tools. More importantly, AUTOSAR does not provide any solvers or a solver interface to be used by models. In the offline world, this is offered by the Functional Mock-up Interface (FMI) which is becoming increasingly popular and is supported by most of the relevant tools.
In this paper, we propose an interface between FMI and AUTOSAR, offering the combination of models with solver libraries. With this, source code could be generated from various established modeling tools and directly be imported into existing automotive software projects. Furthermore, the definition of this interface allows the creation and use of solver libraries on the embedded platform, enabling online simulations even of numerically challenging physical processes. Results from a prototypical implementation will be presented.
Authors
- Jonathan Neudorfer - Robert Bosch Engrg & Bus Solutions Ltd
- Siva Sankar Armugham - Robert Bosch Engrg & Bus Solutions Ltd
- Mathews Peter - Robert Bosch Engrg & Bus Solutions Ltd
- Naresh Mandipalli - Robert Bosch Engrg & Bus Solutions Ltd
- Karthikeyan Ramachandran - Robert Bosch Engrg & Bus Solutions Ltd
- Christian Bertsch - Robert Bosch GmbH
- Isidro Corral - Robert Bosch GmbH
Citation
Neudorfer, J., Armugham, S., Peter, M., Mandipalli, N. et al., "FMI for Physics-Based Models on AUTOSAR Platforms," SAE Technical Paper 2017-26-0358, 2017, https://doi.org/10.4271/2017-26-0358.Also In
References
- Wagner , A. , Bleile , T , Lux , S. , Fleck , C. Method for real time capability simulation of an air system model of an internal combustion engine US Patent US 8321172 B2 2008
- RĂ¼ger , J.-J. , Wernet , A. , Kececi , H.-F. , Thiel , T. MDG1: The New, Scalable, and Powerful ECU Platform from Bosch Proceedings of the FISITA 2012 World Automotive Congress - Volume 6: Vehicle Electronics Springer 2014 10.1007/978-3-642-33829-8_39
- AUTOSAR Consortium Autosar Standard 4.2 http://www.autosar.org/ Aug. 2016
- ETAS GmbH ASCET Software Products http://www.etas.com/en/products/ascet_software_products.php Aug. 2016
- MathWorks Inc. Simulink - Simulation and Model-Based Design http://www.mathworks.com/products/simulink/ Aug. 2016
- ETAS GmbH ETAS ISOLAR-A - Integrated AUTOSAR architecture and basic software configuration tool http://www.etas.com/en/products/isolar_a.php Aug. 2016
- Blochwitz , T. , Otter M. , Arnold , M. , Bausch , C. et al. The Functional Mockup Interface for Tool independent Exchange of Simulation Models Proceedings of the 8th International Modelica Conference 2011 Dresden, Germany 10.3384/ecp11063105
- Blochwitz , T. , Otter , M. , Akesson , J. , Arnold , M. et al. The Functional Mockup Interface 2.0: The Standard for Tool independent Exchange of Simulation Models Proceedings of the 9th Modelica Conference 2012 Munich, Germany 10.3384/ecp12076173
- Thiele , B. ; Henriksson , D. Using the Functional Mockup Interface as an Intermediate Format in AUTOSAR Software Component Development Proceedings of the 8th International Modelica Conference 2011 Dresden, Germany 10.3384/ecp11063484
- Bertsch , C. , Neudorfer , J. , Ahle , E. , Arumugham , S. S. et al. FMI for physical models on automotive embedded targets Proceedings of the 11th International Modelica Conference 2015 Versailles, France 10.3384/ecp1511843
- Modelica Association FMI Support in Tools https://www.fmi-standard.org/tools Aug. 2016
- MISRA Consortium MISRA C: 2012 Guidelines for the use of the C language in critical systems 2013 http://www.misra.org.uk
- Camacho , E. F. , Bordons Alba , C. Model Predictive Control Springer 2007 10.1007/978-0-85729-398-5
- Johansen , T. A. Toward Dependable Embedded Model Predictive Control IEEE Systems Journal PP 99 2014 10.1109/JSYST.2014.2368129