Simplified Architecture by the Use of Decision Units
E/E architectures become more and more complex and thus hamper the introduction of new functions which in turn are essential for the development of electric vehicles. Consequently, new concepts are needed to enable an easy introduction of new technologies along with an interconnected but still manageable architecture. The proposed functional architecture approach aims at a safe operation of electric vehicles with a well defined decision path from the driver and the ADAS functions in the command layer to the actuators of the execution layer. The backbone of this architecture consists of two dedicated decision units. The command decision unit mitigates between requests coming from the driver and the ADAS functions whereas the execution decision unit selects the best actor signals for the current vehicle status. One benefit of this hierarchic approach is the ability to control the validity and the transition between driving modes by a set of rules which can be designed and adjusted to meet the vehicle requirements individually. The concept is not limiting the number of driving modes but is scalable for future applications, different market needs, and vehicle configurations.
Keywordsarchitecture electric vehicle efficiency safety driver assistance decision unit
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