The consideration of the entire system in the design process is essential for the development of innovative vehicles. The development of single components isolated from their environment leads to an oversizing of the system because all subsystems are designed for maximal load. Only an integrated development process based on the entire vehicle allows for the design of components corresponding to actual conditions, thus enabling optimisation of the energy usage.
The vehicle simulation considers the main drive as well as all auxiliary power units of the vehicle for evaluation of the energy flow and thus for determining individual component power profiles and requirements. The nominal values of single components and the requirements for the communication systems can be derived from this analysis.
Special software tools are necessary for this development process because the conventional simulation and calculation programs do not meet interdisciplinary and dynamic demands. Dynamically applicable and real-time capable models are required to simulate real operating conditions in a vehicle and to design the components according to real requirements. The simulation environment is also HIL capable for optimisation of the different components and their operating strategies.
franz.pirker@ait.ac.at