Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Technische Universitat Darmstadt

Fraunhofer-ges. Zur Förderung Der Angewandten Forschung E.v.

Dirk Mayer

Tobias Melz

Christoph Klein

Holger Hanselka

Sven Herold

Holger Lüthje

Rogério Salloum

Martin Thomaier

Martin Thomeier

An arrangement and a method are described for influencing and/or detecting a dynamic or static property of a support structure which has a support structure surface, with at least one planar first actuator element that includes at least one electrically and/or magnetically activated transducer material, and a fiber composite material which joins the first actuator element indirectly or directly to the support structure surface in a planar, which has at least one first fiber layer and a curable matrix. The first fiber layer at least partially covers the first actuator element resting indirectly or directly on the support structure surface, protrudes beyond the first actuator element on both sides along at least a spatial direction running parallel to the support structure surface, and permanently adheres directly to at least some areas of the support structure surface at least in the regions protruding beyond the first actuator element by means of the curable matrix.

Arrangement and method for influencing and/or detecting a dynamic or static property of a support structure

A device is described for vibration damping, which is attachable on a mechanical structure or integratable therein, having at least one mass which is indirectly or directly operationally linked to the structure via elastic means, referred to as the so-called damper mass, and at least one actuator for changing a stiffness which can be associated with the elastic means. The invention provides an electrical power source, which is capable of generating electrical power exclusively using an oscillating relative movement resulting along the operational link between the damper mass and the structure, and a regulating unit, which is connected to the electrical power source, which activates the at least one actuator as a function of the vibration behavior of the structure based upon a vibration damping rule.

Device for damping vibrations

An oscillation decoupling device is disclosed with a load-receiving element which is mounted in an oscillating manner relative to a support unit at least along an active direction along which at least part of the load is applied having at least one sensor unit which detects an oscillation of the element due to the load and at least one actuator unit acting against the oscillation of the element. The support unit is modularly configured and serves as a support structure for at least one unit that receives the element and is elastically deformable in the active direction of the load. The load-receiving element is connected to the elastically deformable unit. The at least one actuator influences the deformation applied to the at least one unit, or is integrated thereon, so that the at least one actuator initiates a deformation acting against an elastic deformation due to the load inside the unit.

Oscillation decoupling device

The invention is a device and a method for eliminating vibrations of a mechanical structure with at least one electromechanical converter material that is actively connected to the mechanical structure and connected to an electrical circuit with at least one electrical impedance. The electrical circuit is connected to an interface, via which the at least one electrical impedance can be variably adjusted by wireless or wired communications with a control unit that is separated from the electrical circuit in which the electrical impedance features at least one variable ohmic resistor, inductive resistor or capacitor.

Method and device for eliminating vibrations of a mechanical structure

The invention is a device for influencing the vibration of a planar element having two opposite surfaces and a neutral fiber plane running between the two surfaces including at least one actuator and at least one sensor which each are provided with transducer materials and are connected to at least one electronic component or an electronic module. The at least one actuator and at least one sensor are completely integrated into the planar element so as to be spaced from the two surfaces as well as from the neutral fiber plane.

Growing community of inventors

Darmstadt, Germany

Dirk Mayer