Browse Publications Technical Papers 2002-01-0801
2002-03-04

A Hardware-in-the-Loop Test Bench for the Validation of Complex ECU Networks 2002-01-0801

Due to the continuously increasing number of electronic control units (ECUs) in modern cars, and their growing complexity, automated tests not only of single ECUs but also of interconnected ECUs have become an important step in the development of automotive electronics. These tasks require new test systems. This paper describes the problems engineers face when developing and testing today's car electronics, as well as a high-end hardware-in-the-loop (HIL) tool set (hardware, software, models) applied to the testing of four networked ECUs for engine management, vehicle dynamics control, automatic transmission, and an active suspension system. The tool set comprises general features needed for HIL tests, like automated code generation for real-time models using MATLAB/Simulink and a comprehensive set of dedicated hardware (processor and I/O hardware). Special features needed for multi-ECU test systems, like code generation for multiprocessor systems, flexible hardware and software configuration, treatment of complex CAN topologies, handling sets of parameters, and test automation, are also discussed.

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