Adaptive tuned mass damper for damping low excitation frequencies
AssigneeFM Energie GmbH & Co. KG
InventorFranz Mitsch
Life of this patent
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Abstract
The invention relates to a new type of tuned mass damper which is suitable in particular for damping oscillations of a low frequency, and can thus be used preferably as a construction damper when building or siting high, narrow structures, such as wind-turbine towers. The invention relates in particular to a pendulum oscillation damper having a first pendulum, to which the mass is attached, and a second pendulum, which is formed by a spring-like support device of a different design and is operated using a gas-air volume such that, with the aid thereof, the frequency of the oscillation system can be adapted and adjusted.
Claims21
An adaptive pendulum-tuned mass damper for adaptable damping of occurring oscillations of low frequencies <2 Hz in high, narrow structures, comprising:
- at least one first pendulum rod, which has a length, is arranged perpendicularly in the idle state, and is connected at one end via a joint directly or via a carrier element to a structure to be damped;
- at least one second pendulum rod, which has a length, is arranged perpendicularly in the idle state, is arranged entirely or partially below or above the first pendulum rod, and is connected at one end via a joint directly or via the carrier element to the structure to be damped;
- wherein said first pendulum rod has a free end that is connected via a freely movable joint directly or indirectly to a free end of the second pendulum rod;
- an oscillation mass, which is attached to the first pendulum rod and connected via the freely movable joint to the second pendulum rod such that the first and the second pendulum rods are moved together when force acts on the oscillation mass;
- and
- a pressure-controlled support device configured to increase or reduce a weight of the oscillation mass by relieving or loading such that frequency changes are selectively achieved, wherein the support device is an integral component of the second pendulum rod.
Dependencies are inferred from the claim text.