Vibration energy harvesting via parametrically-induced bistability

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Abadal, G.^1 ; López, M.^2 ; Venstra, W.J.^3 ; Murillo, G.^4 ; Torres, F.^1

Departament d'Enginyeria Electrònica, Universitat Autònoma de Barcelona, Bellaterra, Barcelona

08193, Spain^1

NiPS Laboratory, Dipartimento di Fisica, Università di Perugia, Perugia

I-06123, Italy^2

Kavli Institute of Nanoscience, Delft University of Technology, Delft

2628CJ, Netherlands^3

Department of Micro and Nanosystems, Institut de Microelectrònica de Barcelona IMB-CNM (CSIC), Bellaterra

08193, Spain^4

关键词: Displacement noise;    Distance parameter;    Low frequency regions;    Non-linear vibrations;    Out-of-plane vibrations;    Repulsive electrostatic interactions;    Vibration energy harvesting;    White Gaussian Noise;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012122/pdf
DOI  :  10.1088/1742-6596/557/1/012122

来源: IOP

【 摘 要 】

The dynamic response to white Gaussian noise of a bistable non-linear vibration energy harvester based on the repulsive electrostatic interaction between a microcantilever and an electrode has been theoretically studied. The cantilever-electrode system can be brought from a linear regime characterized by a quadratic potential, when cantilever is far from the electrode, to a non-linear bistable regime characterized by a quartic potential, when both elements are close enough. This distance parameter, which is commonly used to tune bistability, is unusually used here also to inject the energy to the system in the form of displacement noise. Thus, the widening and shifting to the low-frequency region of the response spectrum as well as the enhancement of the rms out-of-plane vibration of the cantilever are both demonstrated through this parametrically-induced bistability.