Conference article

Automated Test of CVT Control Software, Using FMI and Modelica Models

Weihua Zeng
Hunan Jianglu & Rongda Vehicle Transmission Ltd., China

Liu Fei
Global Crown Technology Co. Limited, China

Lionel Belmon
Global Crown Technology Co. Limited, China

Download articlehttp://dx.doi.org/10.3384/ecp18148155

Published in: Proceedings of the 2nd Japanese Modelica Conference, Tokyo, Japan, May 17-18, 2018

Linköping Electronic Conference Proceedings 148:22, p. 155-160

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Published: 2019-02-21

ISBN: 978-91-7685-266-8

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

Hunan Jianglu & Rongda Vehicle Transmission Ltd., Co. has recently completed the development of a Continuously Variable Transmission (CVT). The transmission and the control software must be fitted to various vehicle platforms and must suit various driving conditions and driver requests. Because of the complexity of the system and due to the large number of driving conditions, systematic tests and validation methods are required. These methods should guarantee correctness and quality of the software and system behavior. For the test of the control software, Jianglu Rongda used an innovative test method based on automatic test scenario generation, Software in the Loop (SiL) simulation, and finally Hardware in the Loop (HiL) tests. The CVT control software is executed with a vehicle simulation model developed with SimulationX/Modelica, which is used both for the SiL and the HiL tests. The model accurately represents the CVT transmission including mechanical and hydraulic systems based on mechanical and physical parameters. In this paper, we describe the corresponding test process and tool chain along with the model validation. We also discuss the advantages and costs of this approach.

Keywords

embedded software, automotive, transmission, testing

References

[1] http://www.fmi-standard.org/

[2] A.Abel, T.Blochwitz, A.Eichberger et al. Functional Mock-up Interface in Mechatronic gearshift simulation for commercial vehicles, 9th International Modelica Conference, 2012, Munich.

[3] A.Junghanns, R.Serway, T.Liebezeit, M.Bonin. Building virtual ECUs quickly and economically. ATZ Elektronik, 03/2012, Volume7.

[4] E.Chrisofakis, A.Junghanns. Simulation-based development of automotive control software with Modelica. Dresden: Modelica international conference, 2011.

[5] M.Tatar, Schaich, Breitinger. Automated test of the AMG speedshift DCT control software. Berlin: 9th CTI Innovative Automotive Transmissions Symposium, 2010.

[6] J.Mauss, M.Simons. Chip simulation of automotive ECUs. 9th symposium
Steuerungssysteme fur automobile Antriebe, 2012, Berlin

[7] N.Papakonstantinou, S.Klinger, M.Tatar. Test-driven development of DCT Control Software. 8th International CTI Symposium Innovative Automotive Transmissions, 2009, Berlin.

[8] M.Neumann,M.Nass,M.Tatar. Absicherung von Steuerungssoftware fur Hybridsysteme, Autoreg 2011, Friedrichshafen.

[9] L.Belmon, J.Yan. Modeling and simulation of DCT gearshifting for real-time and high-fidelity analysis. SAE China-FISITA conference, F2012-C04-014, 2012

[10] A.Abel, U.Schreiber, Valsania, Fornelli. Simulation based design of gearboxes for high- performance sports cars. Modena: 11th HTCES conference, 2005.

[11] L.Belmon, Y.Geng, H.Qian, Virtual integration for hybrid powertrain development, using FMI and Modelica models, Lund, Modelica international conference, 2014

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