Integrated approach for the virtual development of vehicles equipped with brake control systems

Autoren

Fabian Fontana, Jens Neubeck, Jochen Wiedemann, IVK/FKFS, Stuttgart;
Ingo Scharfenbaum, Philippe Stegmann, Armin Ohletz, Uli Schaaf, Audi AG

Jahr

2019

Zusammenfassung

Since the introduction of the brake control system Electronic Stability Control (ESC) in 1995 an increasing number of vehicles was equipped with the system and it became statutory for new registered vehicles in 2014, e.g. in Europe, the United States and Australia. Representing a vehicle dynamic control system, the ESC assures predictable, stable and controllable vehicle behaviour, even at the limits of driving dynamics. Several studies prove the effectiveness of ESC in reducing severe and fatal accidents. In consequence, the consideration of the brake control system is an important issue in every vehicle development.
Simultaneously, today’s vehicle development is characterised by an increasing demand for a customer’s individualisation and a high competitive pressure. Moreover, the complexity and variety of the vehicles increase due to a higher number of interacting mechatronic components. Examples are the degree of powertrain electrification or a rising number of chassis control systems that strongly interact with the brake control system. This leads to an extensive effort in application and testing of the different vehicle setups and conventional methods need to be extended by virtual methods and tools.
Virtual approaches facilitate considering the vehicle variance, which results from different chassis, tyres, chassis control systems etc. In addition, they enable use of novel methods such as sensitivity analyses or optimising algorithms. A lack of reproducibility and expenditure of time are difficulties working with physical prototypes. Virtual methods enable obtaining reproducible results and efficient testing of several manoeuvres for different vehicle configurations. Moreover, the simulation is simultaneously available for multiple users, reduces costs compared to physical prototypes and is utilisable to homologate vehicle variants virtually in accordance with the law.

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