Abstract
Energy harvesting is expected to use for collecting small and/or thin dispersed energy sources wasted in our daily life. A vibration generator, in this study, can convert the vibration energy such as noise and mechanical fluctuation behavior of the structures into electrical energy. Our group has been paying attention to the magnetostrictive vibration power generation using new Fe_based magnetostrictive alloys. The principle of the electrical generator is based on the inverse magnetostrictive effect by using the leakages of magnetic flux from the magnetostrictive oscillating object surrounded by the coil. Most large power is obtained at the resonance frequency point and it seems very important to develop the modified device fitting to wide-band spectrum of structure.
