Automotive Test Rig Research Articles

Off-line feed-forward and [formula omitted] feedback control on a vibration rig

This paper discusses the improvement of the tracking accuracy on an automotive test rig by extending the industrial available off-line controller with an H ∞ feedback controller. The improvement is shown by comparing the tracking error for both control schemes: the industrial controller on the one hand and the industrial controller with H ∞ feedback controller on the other hand. The H ∞ controller is designed based on a mixed sensitivity approach. After a theoretical analysis, the results are illustrated by simulations and experimental results on one axis of a hydraulic test rig which is used in the automotive industry for vibration comfort evaluations of new vehicle prototypes.