Abstract

With the progress of MEMS technology, the vibration energy harvesting technology based on environment vibration has become the hot topics of the nonlinear dynamic study. The bistable electromagnetic vibration energy harvester (BEVEH) with an auxiliary linear oscillator is studied in the paper. Influence of the potential well depth on the dynamic characteristics of the bistable electromagnetic vibration energy harvester is researched in the paper by simulation. The relationship curves of the potential well depth and the stiffness ratio are obtained. It can be concluded that with the stiffness ratio increased, the depth of the potential well become shallower. The power generation with the deep potential well is much more than that with the shallow potential well. The relationship curve of the power generation of the BEVEH system and the depth of the potential well under the different excitation frequency is obtained. It can be concluded that the power generation with deep potential well is more than that with shallow potential well. And there is an optimal depth of the potential well when the BEVEH system works well under some frequency range.

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