Optimization of Driving Comfort During Automated Driving
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AUTHORS
Dr.-Ing. Gerd Baumann is Head of Automotive Mechatronics/Software at the Research Institute of Automotive Engineering and Vehicle Engines Stuttgart (FKFS) in Stuttgart (Germany).
Optimization of Driving Comfort During Automated Driving In a joint project, Porsche and the Research Institute of Automotive Engineering and Vehicle Engines Stuttgart (FKFS) have investigated how to optimize comfort during highly automated driving by using active chassis systems. In the Stuttgart driving simulator, the influence of active roll stabilization and rear axle steering on the subjective perception of comfort of more than 100 normal drivers from the population was examined and correlated with vehicle dynamics parameters.
Matthias Jurisch, M. Sc. is Doctoral Student in Chassis Systems Development at the Dr. Ing. h. c. F. Porsche AG in Stuttgart (Germany).
Claudia Buck, EMBA, M. Sc. is Manager Chassis Innovation at the Dr. Ing. h. c. F. Porsche AG in Stuttgart (Germany).
Dipl.-Ing. Christian Holzapfel is Project Manager Stuttgart Driving Simulator at the Research Institute of Automotive Engineering and Vehicle Engines Stuttgart (FKFS) in Stuttgart (Germany).
© FKFS
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1 INTRODUCTION 2 RESE ARCH QUESTION 3 C ONCEP T 4 CHALLENGES OF USING THE DRIVING SIMUL ATOR 5 E VALUATION AND RESULTS 6 SUMMARY AND OUTLO OK
1 INTRODUCTION
Porsche and FKFS have implemented a procedure for the interactive testing of automated driving functions and driver assistance systems in the Stuttgart driving simulator. Based on this procedure, the potential for optimizing driving comfort and avoiding kinetosis (motion sickness) during automated driving was investigated. A Porsche Panamera Turbo with active roll stabilization and rear axle steering was considered. Control interventions on the active chassis components were examined in the driving simulator of the FKFS. The aim was to determine their influence on driving comfort and kinetosis as part of a study conducted with volunteers, a representative group of normal drivers. The driving simulator, FIGURE 1, has an eight-axis motion sys-
tem with what is currently the largest motion range in Europe. An XY linear table enables the realistic simulation of longitudinal and lateral acceleration. With the hexapod on top, it can depict pitching, rolling and yawing movements as well as the vertical dynamics. A complete vehicle cabin is located inside the simulator. By means of 360° image projection, spatial representation of noises and vibrations, the driver experiences a fully immersive driving impression. In recent years, this driving simulator has been used to conduct numerous studies on automated driving on behalf of vehicle manufacturers and automotive suppliers; for example the transfer of vehicle control in normal and emergency situations, the simulation of Human-machine Interfaces (HMIs) [1] and acceptance studies for safety-oriented longitudinal vehicle guidance [2]. The FKFS has developed a method to almost completely avoid kinetosis, which is induced by the driving simulator itself and
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