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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Tang, Xiudong Zuo, Lei |
| Copyright Year | 2011 |
| Abstract | A type of dual-mass vibration energy harvester, where two masses are connected in series with the energy transducer and spring, is proposed and analyzed in this paper. The dual-mass vibration energy harvester is proved to be able to harvest more energy than the traditional single degree-of-freedom (DOF) one when subjected to harmonic force or base displacement excitation. The optimal parameters for maximizing the power output in both the traditional and the new configurations are discussed with taking the parasitic mechanical damping of the system into account. In consistent of the previous literature, we find that the optimal condition for maximum power output of the single DOF vibration energy harvester is when the excitation frequency equals to the natural frequency of the mechanical system and the electrical damping due to the energy harvesting circuit is the same as the mechanical damping. However, the optimal conditions are quite different for the dual-mass vibration energy harvester. It is found that two local optimums exist, where the optimal excitation frequency and electrical damping are analytically obtained. The local maximum power of the dual-mass vibration energy harvester is larger than the global maximum power of single DOF one. Moreover, at certain frequency range between the two natural frequencies of the dual-mass system, the harvesting power always increases with the electrical damping ratio. This suggests that we can obtain higher energy harvesting rate using dual-mass harvester. The sensitivity of the power to parameters, such as mass ratio and tuning ratio, is also investigated. |
| Sponsorship | Design Engineering Division and Computers and Information in Engineering Division |
| Starting Page | 343 |
| Ending Page | 351 |
| Page Count | 9 |
| File Format | |
| ISBN | 9780791854785 |
| DOI | 10.1115/DETC2011-48791 |
| Volume Number | Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B |
| Conference Proceedings | ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
| Language | English |
| Publisher Date | 2011-08-28 |
| Publisher Place | Washington, DC, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Design Damping Degrees of freedom Transducers Vibration Circuits Excitation Energy harvesting Springs Displacement |
| Content Type | Text |
| Resource Type | Article |
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