Title :
Dynamic Characteristics of Galfenol Cantilever Energy Harvester
Author :
Shuying Cao ; Jiaju Zheng ; Yan Guo ; Quan Li ; Jie Sang ; Bowen Wang ; Rongge Yan
Author_Institution :
Province-Minist. Joint Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin, China
Abstract :
Based on the Armstrong model and the established electromechanical model of a Galfenol cantilever energy harvester, a nonlinear dynamic model is proposed to describe the mechanical-magneto-electro coupled characteristics of the device. Comparisons between the experimental and calculated results show that the proposed model can provide a reasonable qualitative indication of data trends, and can predict the effects of the acceleration excitation, the load resistance, and the bias magnetic field on the output performance of the device, thus has very strong practicability.
Keywords :
cantilevers; energy harvesting; magnetic fields; Armstrong model; Galfenol cantilever energy harvester; acceleration excitation; bias magnetic field; electromechanical model; load resistance; mechanical-magneto-electro coupled characteristics; nonlinear dynamic model; Load modeling; Magnetic anisotropy; Magnetic hysteresis; Magnetostriction; Saturation magnetization; Stress; Armstrong model; Galfenol; energy harvester; inverse magnetostrictive effect;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2360195
