[Back]

M. Kozek, C. Benatzky, A. Schirrer, A. Stribersky:
"Vibration Damping of a Flexible Car Body Structure Using Piezo-Stack Actuators";
Talk: 17th IFAC World Congress, Seoul, Korea (invited); 2008-07-06 - 2008-07-11; in: "Proceedings of the 17th IFAC World Congress", (2008), 6 pages.

The active vibration damping of a flexible car body structure can be accomplished by either active suspension schemes or actuator inputs acting directly on the car body structure. In this work piezo-stack actuators mounted in consoles are utilized to introduce bending moments into the flexible structure thus achieving a significant increase in ride comfort. Using an example of a heavy metro vehicle the complete design for the active vibration damping system is presented. Both analytical modeling and a system identification of the vehicle are described, issues of modal representation and model reduction are covered, and a robust controller design is motivated and explained. The excellent performance of the proposed method is documented by both experimental results from a scaled model and an extensive co-simulation of the overall system.

rail traffic; vibration damping; active control; robust control; vehicles.