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- W2334684737 abstract "We study magnetostrictive vibration based power generator using iron-gallium alloy (Galfenol). The generator is advantages over conventional, such as piezoelectric material in the point of high efficiency highly robust and low electrical impedance. Generally, the generator exhibits maximum power when its resonant frequency matches the frequency of ambient vibration. In other words, the mismatch of these frequencies results in significant decrease of the output. One solution is making the spring characteristics nonlinear using magnetic force, which distorts the resonant peak toward higher or lower frequency side. In this paper, vibrational generator consisting of Galfenol plate of 6 by 0.5 by 13 mm wound with coil and U shape-frame accompanied with plates and pair of permanent magnets was investigated. The experimental results show that lean of resonant peak appears attributed on the non-linear spring characteristics, and half bandwidth with magnets is 1.2 times larger than that without. It was also demonstrated that the addition of proof mass is effective to increase the sensitivity but also the bandwidth. The generator with generating power of sub mW order is useful for power source of wireless heath monitoring for bridge and factory machine." @default.
- W2334684737 created "2016-06-24" @default.
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- W2334684737 date "2016-04-01" @default.
- W2334684737 modified "2023-09-23" @default.
- W2334684737 title "Wide operation frequency band magnetostrictive vibration power generator using nonlinear spring constant by permanent magnet" @default.
- W2334684737 cites W2315366435 @default.
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- W2334684737 doi "https://doi.org/10.1117/12.2218767" @default.
- W2334684737 hasPublicationYear "2016" @default.
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