Holistic vehicle parametrization on a handling roadway

Abstract

In the vehicle development process, the availability of vehicle models is of essential importance for design and validation of the driving characteristics. These vehicle models, which have to fulfill the requirements of the specific application in terms of complexity and level of detail, can be obtained using a multitude of established processes. These include, for example, the derivation of real-time capable models from MBS models, the measurement of subsystems on specialized test benches, but also the characterization of the overall vehicle behavior based on road measurements. IFS and FKFS operate a Handling Roadway whose primary field of applications is the examination of overall vehicle dynamics under laboratory conditions. However, the institutes also pursue the goal of expanding the range of applications to include the parametrization of complete vehicle models and their subsystems. To analyze the potentials of such a method, measurements are conducted which are used to identify fundamental vehicle characteristics. For this purpose, the sensors already available as part of the test system are complemented by wheel force transducers and wheel vector sensors. The measurements are used to parametrize the tire, K&C, steering, and spring parameters of a vehicle model for lateral dynamics tests. Simulations of dynamic driving maneuvers show a good comparability with equivalent dynamic tests performed on the test system.