An Approach to Supply Simulations of the Functional Environment of ECUs for Hardware-in-the-Loop Test Systems Based on EE-architectures Conform to AUTOSAR

Abstract

Today’s vehicles include a complex network of programmableelectronic control units with software components. Avehicle’s electric and electronic (EE) architecture has to bemodeled in an early design phase to evaluate design alternatives.The tool PREEvision offers possibilities to modelEE-architectures considering feature function networks,function networks, component networks as well as wiringharness and the respective mappings.The software architecture specified by AUTOSAR separateshardware dependent and hardware independent softwaremodules. This allows the mapping of hardware independentsoftware applications to different hardware platforms.Hardware-in-the-Loop (HiL) is an established technologyfor testing electronic control units (ECU) and to assurequality. HiL-test-systems (HiL-TS) simulate the ECU’sfunctional environment (car, driver, road, tires, etc.) andadditionally offers the possibility to insert logical faults aswell as electrical faults (short circuit, open load, etc.).Mostly, this HiL-simulation is individually engineered forevery single ECU.This paper introduces a concept for the automated supportof such simulations. This includes the derivation of relevantinformation from the model of the EE-architecture as wellas the portation of the AUTOSAR software architecture tothe HiL-TS. Following this concept, engineering costs canbe reduced and the quality and correctness of the simulationincreased.