Abstract
Vehicle electronics and on-board software have become so complex that simply handling the complexity is now a critical issue if new vehicles are to be launched both on time and without risking high warranty costs or loss of image. There are enough examples of how things can go wrong without proper processes.
A key step is to use hardware-in-the-loop (HIL) technology for testing all sizes of controlled systems: components and ECUs at the lower end; small ECU networks in domains like powertrain, chassis, and body; and at the upper end, the electronics and software of whole vehicles in one test setup.
Many OEMs and suppliers now use HIL. However, not everyone understands HIL the same way, and there are many differences between companies and domains. This paper highlights the status of current HIL technology, which ranges from simple single- ECU testing to large simulated replicas of complete vehicles. HIL tests at the component level are prevalent, and large complete vehicle HIL simulators are common at OEMs in Europe. Testing with virtual vehicles is also starting in the USA and Japan.
Keywords:Hardware-in-the-Loop, Component Tests, Virtual Vehicles, Hybrid