Affiliation of Author(s):航空学院

Journal:J Vib Shock

Abstract:In order to establish a unified performance comparison standard and obtain the maximum output power and the corresponding optimal loads for a piezoelectric-electromagnetic hybrid vibration energy harvester, a generalized dimensionless parameter model was introduced to address this problem. The expression of the theoretical normalized output power was derived, and the maximum value and the optimal loads were obtained based on a genetic algorithm; the relationships between the dimensionless parameters and the performance of the harvester were analyzed by numerical simulations, and the feasibility of the model and genetic algorithm for this topic were verified by an experiment. The results show: (1) reducing coil resistance can improve the performance; (2)improving mechanical quality factor can increase the frequency selectivity; (3) the performance is co-determined by piezoelectric and electromagnetic factors when the two effects are weak coupling, and the best performance is obtained at their matching point; (4)the performance is almost determined by the electromagnetic factor when it is strong coupling, and it increases to the ultimate performance with the electromagnetic effect; (5) the optimal load range is increased by using the piezoelectric-electromagnetic dual-coupling mechanisms. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.

ISSN No.:1000-3835

Translation or Not:no

Date of Publication:2017-06-28

Co-author:Xia, Huakang,Zhu, Liya,XT21109,Zhou, Qinbang

Correspondence Author:Joker Chen