Vibration Energy Harvesting by Means of Piezoelectric Patches: Application to Aircrafts

Sensors

Alberto Doria¹  Federico Moro¹  Domenico Tommasino¹  Thibault De Lumley Woodyear²  Bruno Bernay²  Enrique de Pablo Corona³ 

[1] Department of Industrial Engineering, University of Padova, 35131 Padova, Italy;SONACA, SA, 6041 Gosselies, Belgium;Smart Material Corp., 01159 Dresden, Germany;

关键词: vibration energy harvesting;    slat vibrations;    multi-physics model;    piezoelectric harvester;   

DOI  :  10.3390/s22010363

来源: DOAJ

【 摘 要 】

Vibration energy harvesters in industrial applications usually take the form of cantilever oscillators covered by a layer of piezoelectric material and exploit the resonance phenomenon to improve the generated power. In many aeronautical applications, the installation of cantilever harvesters is not possible owing to the lack of room and/or safety and durability requirements. In these cases, strain piezoelectric harvesters can be adopted, which directly exploit the strain of a vibrating aeronautic component. In this research, a mathematical model of a vibrating slat is developed with the modal superposition approach and is coupled with the model of a piezo-electric patch directly bonded to the slat. The coupled model makes it possible to calculate the power generated by the strain harvester in the presence of the broad-band excitation typical of the aeronautic environment. The optimal position of the piezoelectric patch along the slat length is discussed in relation with the modes of vibration of the slat. Finally, the performance of the strain piezoelectric harvester is compared with the one of a cantilever harvester tuned to the frequency of the most excited slat mode.

【 授权许可】

Unknown