Consistent application of systems engineering and simulation for cross-domain function integration

Authors

Marcus Boumans, Dr. Martin Johannaber, Ulrich Schulmeister, Robert Bosch GmbH

Year

2019

Summary

The automotive megatrends (electrification, automation, connectivity) and new mobility concepts lead to an increasing interaction of mechatronic systems with their surrounding systems and finally to an increased interaction with the entire vehicle. This leads to changed boundary conditions for OEMs and Tier1 suppliers. The creation of new, innovative customer functions are more and more based on the interaction of formerly separate vehicle domains. Examples are the use of the braking
system for an advanced steering behavior or the use of the electric drive system for improved braking functions in electrified vehicles. The most obvious example of such cross-domain functions is highly automated driving. The driving task has to be completed by an effect chain that starts with the perception of the environment by a suitable sensor cluster, followed by a situation analysis and driving trajectory planning by advanced computer algorithms and finally the correct control of the steering-, powertrainand brake subsystems by deeply embedded control units and control algorithms. The development of those new functions requires a suitable cross-domain engineering.
For reasons of risk minimization and encapsulating complexity, some established OEMs are more and more requesting system solutions for e.g. an electrical axle or an automated driving kit from a Tier 1 supplier rather than sourcing single components. New players enter the automotive market with new business models. They expect suppliers to have functioning system solutions at a higher level of integration e.g. a rolling chassis with which they can provide their mobility services. In addition, there are generally higher demands for faster time to market.
Cross-domain functions together with increased requirements regarding safety and security lead to a highly increased technical complexity (more system elements, more interfaces). Furthermore, automotive development organizations are typically structured along to the classical vehicle domains. For the development of cross-domain functions, this vertical structuring leads to an additional organizational complexity (distributed knowledge, responsibilities and financing models).

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