Share Email Print
cover

Proceedings Paper • new

Vibration-based energy harvesting circuit using feed-forward control
Author(s): Qinlin Cai; Songye Zhu
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

This paper proposes an improved electromagnetic damper cum energy harvester (EMDEH), consisting of an electromagnetic damper and a specially designed energy harvesting circuit (EHC). EMDEH is intended to suppress structural vibrations by harvesting vibration energy of structures. A microcontroller unit (MCU) is applied in the EHC to control the power switch by adjusting the duty cycle appropriately through a feed-forward control. Consequently, the EHC can achieve a controllable equivalent damping coefficient. The performance of the proposed EHC was validated through a cyclic test on a universal testing machine. Although the total energy conversion is relatively low, a desirable constant resistance feature could be achieved and an electrical power with hundreds of mWs could be charged into a battery. These experimental results revealed the benefit of using MCU in a feed-forward control system in EMDEH, and the improved EMDEH could fulfill dual-functions, namely, simultaneous vibration control and energy harvesting, with an improved performance.

Paper Details

Date Published: 27 March 2019
PDF: 7 pages
Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 109700X (27 March 2019); doi: 10.1117/12.2513791
Show Author Affiliations
Qinlin Cai, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Songye Zhu, The Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 10970:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019
Jerome P. Lynch; Haiying Huang; Hoon Sohn; Kon-Well Wang, Editor(s)

© SPIE. Terms of Use
Back to Top