Virtualization of Approvals for Brake Control Systems
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Virtualization of Approvals for Brake Control Systems
© Bosch
AUTHORS
Dipl.-Ing. Sven-Etienne Henschel is Chief Product Owner for Simulation at EFS Elektronische Fahrwerkssysteme GmbH in Gaimersheim (Germany).
Virtual development methods have great potential in the function development and approval of system software for brake control systems. In a pilot project, EFS and Bosch demonstrate how interdisciplinary collaboration for the virtualization of road and customer approvals can be successfully achieved using the open integration and test platform CarMaker from IPG Automotive.
REDUCING THE NUMBER OF REAL PROTOT YPES
Rohan Deshetti, M. Sc. is Simulation Engineer for Vehicle Dynamics Simulation at Robert Bosch GmbH in Stuttgart (Germany).
Jan Stehle, M. Sc. is Business Development Manager for Vehicle Dynamics at IPG Automotive GmbH in Karlsruhe (Germany).
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In a joint pilot project, EFS and Bosch set themselves the goal of fully virt ualizing the prototype of an Audi SQ7 SUV [1]. This vir tualization was intended to achieve a reduction in the number of realworld vehicle prototypes and vari ants to become less dependent on vehicle availability and to develop more cost-effectively. Another objec tive was to shift driving maneuvers posing risks to humans and hard ware into the virtual world while increasing the depth of testing. To implement these objectives, a basic concept was defined for the c ollaboration. Following a
joint project kick-off, the virtual prototype and the requisite test environment on the basis of the open integration and testing plat form CarMaker from IPG Automotive were set up before the project part ners started the actual workshop activities. This article provides a detailed description of the project stages and the resulting findings for EFS and Bosch. CONCEPT OF APPLIED COLLABORATION
The concept of applied collabora tion was designed after the project k ick-off. During this process the task fields for EFS and Bosch were separately defined. The main task
of EFS was to create the virtual proto type of the Audi SQ7. Subsequently, using this vehicle model, plausibility maneuvers were to be performed and driving physics to be checked to ensure the quality of the model in comparison with the real-world vehicle. One of Bosch’s central tasks was to concurrently create a respective catalog of driving maneuvers in the platform CarMaker. This catalog is used to make approval of the related vehicle dynamics control (ESC) software possible in early project phases, for use by drivers even without special training. Due to an exchange of the virtual proto type and the test catalog between EFS and Bosch, it was possible to run the tests on an integrated Hardware-in-theLoop (HiL) test bench. In addition, the ESC system was set up as a Software-inthe-Loop (SiL) control to enable the per formance of functional tests. After testing, the comparison of the real-world vehicle and the simulation was jointly carried out. The integrated HiL test bench was used due to the fact th
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