Design and experiments of a column giant magnetostrictive energy harvester

MENG Ai-hua,YANG Jian-feng, JIANG Sun-quan,LIU Cheng-long

Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 175-180.

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PDF(1374 KB)
Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 175-180.

Design and experiments of a column giant magnetostrictive energy harvester

  • MENG Ai-hua,YANG Jian-feng, JIANG Sun-quan,LIU Cheng-long
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Abstract

In order to make use of the vibration energy from nature and make up for the inadequacy of traditional way to power the micro device. In this paper, a kind of vibration energy harvester based on giant magnetostrictive material (GMM) has been designed, and through experiment its energy collection features have also been verified. First, based on the analysis of the physical properties of GMM, the modeling and simulation of energy harvest device has been analyzed. And then, according to the results of simulation analysis to design a set of columnclaviform giant magnetostrictive energy harvester. Finally, an experimental platform has been established to verify the effect of the design. Experimental results indicate that when the frequency of input excitation signal f_n is constant the peak-to-peak value of output voltage of the device is directly proportional to the amplitude of input vibration signalF_m. When the amplitude of input vibration signal F_m is constant the peak-to-peak value of output voltage of the device is directly proportional to the frequency of input excitation signal f_n as well. When the maximum of the vibration stress is 2.54MPa, the sinusoidal vibration frequency is 100Hz and the turns of induction coil is 100 the peak-to-peak value of output electromotive force of the device is 136.4mV. This result is better in line with the theoretical value(156mV) and the waveform is consistent as well.

Key words

Vibration / Energy harvester / Giant magnetostrictive material

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MENG Ai-hua,YANG Jian-feng, JIANG Sun-quan,LIU Cheng-long. Design and experiments of a column giant magnetostrictive energy harvester[J]. Journal of Vibration and Shock, 2017, 36(12): 175-180

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