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17:15 ics Saal 4
Design and Realization of an Adjustable Fluid Powered Piston for an Active Air Spring
Philipp Hedrich, Technische Universität Darmstadt, Institute for Fluid Systems, Germany
In this paper, we present a new compact hydraulic linear actuator. The concept is devel-oped to change the rolling piston diameter of an active air spring during usage. By doing so, the air spring can actively apply pressure and tension forces. The actuator is de-signed for small movements at high forces. It is insensitive to side forces, which are introduced by the bellows rolling on the rolling piston of the air spring. A diaphragm seal-ing is used to minimize friction. The system is completely leakage-free and a precise adjustment of small displacements with high dynamics is possible. We describe the de-sign and development of this actuator and show first measurement results from prelimi-nary tests to show its functionality.