Electric Circuit- and Wiring Harness-Aware Behavioral Simulation of Model-Based E/E-Architectures at System Level

Abstract

To cope with the rising complexity of automotive electric/electronic architectures (EEA), model-based development at system level is well-established and typically realized in architecture description languages (ADLs) and high-level tools. In this paper, we extend a previously developed approach for automated cross-domain simulation synthesis of model-based EEA descriptions enabling system-level evaluation by a behavioral specification layer. The key contributions of this work are modeling extensions applied to a state-of-the-art EEA ADL to refine specified behavior during synthesis with electric circuits including wiring harness details modeled at the hardware layer. Preliminary experiments show that the novel combination of quantization-and SPICE-based synthesized circuit simulation, conducted in a discrete-event manner and applied to a buck converter, a typical device in an automotive EEA, increases simulation efficiency up to a factor of 2.0 compared to other state-of-the-art tools while preserving accuracy. Finally, another example EEA hardware network, modeling the dynamic current consumption of an Electric Power Steering actuator, applied to a realistic vehicle topology model demonstrates the impact of wiring harness refinements.

Cross-Layer Behavioral Modeling and Simulation of E/E-Architectures using PREEvision and Ptolemy II

“…These block types are used to instantiate actors at the BLA layer. In combination with mappings from the LA layer to lower layers they provide the connection of the behavioral blocks of the BLA to domain-specific information at lower layers enabling the cross-domain simulation of the underlying network communication or even electric circuits [16] in an aspect-oriented manner. A variant-sensitive synthesis is also implemented supporting the analysis of architecture variants [17].…”