Abstract
With the augmentation of the number of functions in the vehicles, it is almost impossible to have a good global overview of the functionalities and their impacts on the vehicle behavior. Nevertheless, the time to market is shorter than three years and the concept phase lasts one year before. Furthermore, few synergies exist between the architecture and function developers and it is one of the main cause of problems at the end of the development phase, during the integration. Consequence is an enhancement of the final integration costs due to further development needs. Thus a simulator, containing the entire simulation loop, from HMI to actuators, with bus communication systems, has been developed by Intedis. It tests in real time the compatibility of the vehicle components based on a functional approach and emulates the hardware architecture to improve synergies. The aim of this paper is to describe the simulator functional architecture and its main elements, as the vehicle motion models, the driveline and the driver assistance systems, and to present its added value. To illustrate the different described parts, the example of the Lane Keeping Assistance System (LKAS) is used, showing its component from the actuators to the sensors. Thus paper is concluded with a concrete example of architecture preparation regarding the effect of the ESC on the LKAS stability.
Keywords: Vehicle simulation, functional architecture, hardware architecture, active safety, driver assistance systems