Vibrationsenergieumwandlung des Resonanzsystems
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Amplitudenresonanz, starke Überhöhung der Amplitude eines mit einer äußeren periodischen Kraft der Erregerfrequenzν zum Schwingen angeregten Systems, bei dem die Erregerfrequenz in der Nähe einer Eigenfrequenz des schwingenden Systems liegt. Dieses Phänomen nennt man Resonanz.Trägt man die Amplitude der Schwingung (nach dem Einschwingvorgang) in
Can vibration energy be harvested from a shock absorber?
A device for harvesting low-frequency vibration energy is established. This harvester can scavenge vibration energy from the shock absorber of a train. Using energy harvested from ubiquitous vibration for powering the increasing number of low-power electronics is a promising technique.
Can a vibration-to-rotation conversion mechanism scavenge vibration energy from a shock absorber?
A vibration-to-rotation conversion mechanism using a magnet array is proposed. The proposed motion conversion mechanism leads to high energy efficiency. A device for harvesting low-frequency vibration energy is established. This harvester can scavenge vibration energy from the shock absorber of a train.
What is a vibration energy harvester?
Prototype of the vibration energy harvester Based on the proposed vibration-to-rotation mechanism, an electromagnetic energy harvester is designed and fabricated. This harvester utilizes the rotary cylinder to drive a mini generator for converting kinetic energy to electricity.
Is vibration a harmonic or a random energy harvester?
During the investigation of the optimal resistance of the external load, the form of excitation is harmonic. However, most vibrations in nature are random. To learn about the actual characteristics of the harvester under random vibration, the energy harvesting capacity of this system is studied when excited by hand-shaking vibration.
Are vibration-based energy harvesters better than traditional energy sources?
Table 4 shows the out power of some vibration-based energy harvesters reported in the railway industry. It can be found that the proposed harvester is superior in energy harvesting capacity. Thus, the study and implementation of the proposed mechanism make sense for both the traditional and vibration-based energy sources.
What is resonance energy transfer?
Resonance energy transfer (RET), the transport of electronic energy from one atom or molecule to another, has significant importance to a number of diverse areas of science. Since the pioneering experiments on RET by Cario and Franck in 1922, the theoretical understanding of the process has been continually refined.
