Modeling Velocity Fluctuations for the Derivation of Automotive Component Loads
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Designing automotive components in a resource-efficient way, it is necessary to know the loads to be expected during operation. At an early stage of development virtual load generation is needed to derive them efficiently and realistically. Many of these loads depend on the driven velocities of the vehicle and, therefore, determining characteristic velocity profiles for different vehicle types and driving manners is essential for reliability-based design in the automotive industry. In the present work we analyse velocity measurements of different vehicles and drivers on several routes and investigate the velocity fluctuations with respect to their statistical properties. We show that the fluctuations can be described by a stochastic process adapted to the measured properties. This leads to a comprehensive stochastic modeling approach that can be used to simulate characteristic velocity profiles for a wide-range of types of roads, drivers and vehicles.
