Enhanced Tyre Modelling for Vehicle Dynamics Control Systems

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Enhanced Tyre Modelling for Vehicle Dynamics Control Systems
Modelling and simulation of safety-relevant advanced driver assistance systems (ADAS) and vehicle dynamics controller (VDC) has become a state of the art tool to reduce development time and save costs. The ever-growing demands of shorter calculation time and higher accuracy lead to increasing interests on semi-physical tyre modelling. The present work investigates the influences of tyre temperature as well as transient tyre forces which are acting during interventions of ADAS and VDC. In the first part of the thesis, a temperature model is developed and implemented in the TMeasy tyre model. The extended approach is able to consider the influence on tyre force characteristics based on different tyre layer temperatures. In the second part, validating the Voigt-Kelvin model approach shows suitability around fixed operating points, but inaccuracies for a wide frequency working range do occur. In order to model the effect of dynamic frequency dependent hardening of elastomers, an extended Maxwell model approach is implemented in TMeasy and validated based on measurement data. In summary, both extensions increase the accuracy and validity of the tyre model. This leads to an improvement in the representation of tyre and vehicle behaviour for various ADAS and VDC testing.

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ISBN: 9783851257281

Language: English

Publication date: 20.03.2020

Number of pages: 224

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