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International Journal of Automotive Technology > Volume 16(5); 2015 > Article
International Journal of Automotive Technology 2015;16(5): 751-763.
VEHICLE AND STEERING SYSTEM DYNAMICS IN THE CONTEXT OF ON-CENTRE HANDLING
K. T. R. VAN ENDE1, F. KÜÇÜKAY2, R. HENZE2, F. K. KALLMEYER1, J. HOFFMANN1
1Volkswagen AG
2Technische Universität Braunschweig
ABSTRACT
The interaction of the vehicle and steering system is important to evaluate the vehicle on-centre handling. To analyse the vehicle and steering system dynamics at small steering wheel angle inputs a methodological approach to validate a simulation model is developed in this paper. The presented model is focused on the description of the major on-centre handling phenomena and characteristics. For the validation of the model adjusted test manouevres and a certain procedure to achieve highly reproducible measurement data are described. Due to the collected measurement data it is possible to describe the vehicle on-centre behaviour and to validate the overall model in a phased manner and more exactly. The results show the importance of the steering system characteristics and its influence on the on-centre handling regarding small steering wheel angles at low frequencies. Next to the steering system friction and elasticity the influence of the vehicle and steering system hysteresis loop is presented.
Key Words: Steering system, On-centre handling, Vehicle dynamics, Modelling, Test design, Electro-mechanical steering system
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