Title :
An impact based frequency up-conversion mechanism for low frequency vibration energy harvesting
Author :
Edwards, Ben ; Xie, Meihua ; Aw, Kean C. ; Hu, Aiguo Patrick ; Gao, Wenzhong
Author_Institution :
Univ. of Auckland, Auckland, New Zealand
Abstract :
This paper presents a new mechanism for achieving frequency up-conversion in low frequency vibrational energy harvesting device, utilising the contact interaction between an end-stop and a cantilever beam. A mechanical model of the mechanism has been developed for simulation and a prototype device was fabricated to demonstrate the effect experimentally. Simulation showed an increase in the oscillation frequency of the cantilever mass by a factor of 12.5 from an excitation of 4Hz, while the peak-peak displacement was limited to 2.2mm. Frequency was increased by a factor 10 using the prototype device under similar conditions.
Keywords :
energy harvesting; vibrations; cantilever beam; cantilever mass; contact interaction; impact based frequency upconversion mechanism; low frequency vibration energy harvesting; mechanical model; vibrational energy harvesting device; Damping; Energy harvesting; Mathematical model; Oscillators; Resonant frequency; Springs; Vibrations; Frequency up-conversion; energy harvesting; low frequency;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on
Conference_Location :
Barcelona
DOI :
10.1109/Transducers.2013.6627026