Katharina Bause

Connected Testbeds – Early Validation in a Distributed Development Environment

The automotive industry is currently driven by three major trends - electrification, automation and connectivity [1]. These lead to an increasing complexity of the overall system and more interaction of the subsystems. In addition, there is a progressive shift from development tasks to suppliers, which goes hand in hand with parallel development of the subsystem. To cope with the challenges described above, development tasks should be frontloaded to earlier stages, while simultaneously maintaining the system context. This applies in particular to the validation activities.

Effects of driving functions reorganization on subsystems in electric drive systems

In context of drive systems’ electrification, drive functions have to be fulfilled by new systems and subsystems. Thereby, various aspects could be differentiated. The first one is the substitution, which means: new subsystems carry over the functions of conventional drive systems. For example, an electric machine replaces the combustion engine within a central drive. Another aspect is a new kind of assignment of established functions to one or more subsystems. Thus, in multi-speed gearboxes the electric machine instead of frictional-locking elements like synchronisation and clutches should perform the synchronisation of speed. In addition, the electrification offers the realisation of new drive functions, which were not feasible yet. These functions are e.g. recuperation and torque vectoring. (s. section 2.2) Especially, if new drive functions have to be fulfilled – like combustion engine start in hybrid-electric vehicles –the consequences for the residual drive system and the user as well as the achievement of development objectives are not evaluable.

System-integrated data acquisition in validation and operation of electric vehicles

The success of electro mobility depends on its sustainability for daily use. The integration of electro mobility will be supported by the benefits compared to existing mobility solutions and infrastructure. Currently, integrated concepts, models and methods for systematically evaluation of electro mobility’s adoption under different criteria are missing. Thereby, regarding at electro mobility as well as neighbour domains is important.