Requirements for passenger vehicles are constantly subject to change. Apart from service life, comfort is of vital importance. Noise, vibration, and harshness (NVH) behaviour is especially crucial in this regard. Corresponding optimisation of acoustic and vibrational performance leads to less vibrational strain on the driver. The drivetrain represents a significant source of vibrations and noise.
The importance of validation has increased as new components are tested and approved. Through the development of new vehicle drivetrains and with an increasing proportion of mechatronic systems, the requirements for the individual components are becoming increasingly complex and the tests more comprehensive.
Testing vehicle components under realistic operating conditions at the HiL test bench
With the rapid increase in the number of electronic components and with increasing functionality, especially with regard to drivetrain electronics, along with constantly shortening development times, the test processes at HiL test benches are an effective platform for improving testing possibilities. The HiL test bench enables transferring the system behaviour of the drivetrain onto the components. The HiL test bench includes a test bench model coupled to a vehicle simulation model. The simulated interactions are transferred from the highly dynamic electric motor to the component being tested.
Using the HiL test bench to make sure the system works as planned
The Hardware-in-the-Loop (HiL) process in the HiL test bench uses an embedded system and a simulator to simulate the real (physical) environment in which the system will later operate. HiL testing enables individual components of the drivetrain to be tested on the HiL test bench during a very early stage in the development process, using specifications related to later operation, without necessarily requiring other drivetrain components. We are thus able to make sure, at a relatively early stage, that your system works as planned, which supports your development process.