Test Rig Technology

Innovative test bench technologies are required to investigate and develop innovative vehicle systems.

At the IMS, test bench concepts are being developed to meet the changing requirements. Examples include the Car-in-the-Loop test bench and the longitudinally dynamic driving simulator Driveception.

The car-in-the-loop test bench should enable the simultaneous examination of all mechatronic vehicle systems. Drive, steering and chassis can be tested together with this patented test bench concept.

Picture: IMS
Longitudinal driving simulator

The Driving Simulation Driveception is a test environment for the evaluation and assessment of longitudinal dynamic maneuvers such as start-up and gear shifting processes.

Multimodal investigations are used to identify relevant factors on the perception of vehicle longitudinal dynamics. For this purpose, accelerations of up to 6 m/s² can be realized in a range of motion of ±5 m. In addition to the use of new technologies such as head-mounted displays, the innovation of this test bench concept lies in the significantly reduced complexity compared to driving simulators with similar characteristics.

Current Projects Related to this Key Topic:

Period: 2018 – 2021

Cooperation: BMW Group, FAI (TU Darmstadt)

The aim of this project is to investigate the perception of gear shifting processes in different powertrain configurations, taking into account different user groups. In this context, relationships between the physical effects of a gear shift sequence and the subjective evaluation of the driver are to be examined and suitable evaluation criteria for gear shifting processes are to be derived. As a test environment, the longitudinal dynamic driving simulator of IMS “Driveception” is available. The project is carried out in cooperation with the BMW Group and the Research Group for Work and Engineering Psychology (FAI) of TU Darmstadt.

Contact: Edward Kraft

The Car-in-the-Loop test bench is an extension of today's experimental set-ups for vehicle development. It is modularized, has the capability of automated system identification for control strategy adaptation and couples with virtual vehicle prototype in closed-loop. By this means, it enables a quick make-ready time, can be easily integrated into the model-based development process. One of its main application is to test the function and interaction of various mechatronic systems in longitudinal, lateral and vertical freedom degrees on complete vehicle level under realistic driving situations. Thereby it provides a method for the front-loading of the development work (e.g. most part of the calibration) from vehicle to earlier development phases. The Car-in-the-Loop concept is attractive especially when simultaneous engineering is required to shorten the development cycle time.

Contact: Guanlin Gao

Further Information you can find on the Project website.

Completed Projects Related to this Key Topic:

Period: 2014 – 2018

The aim of the project is the identification of perception thresholds with focus on the load change maneuver. The test simulator is the Driving Simulator Driveception. The obtained thresholds provide information about the assessment of the longitudinal dynamics of a vehicle and contribute to the improvement of the powertrain application.

Contact: Edward Kraft

Selected publications:Investigating the perception of powertrain shuffle with a longitudinal dynamic driving simulator