Abstract
Vibration energy harvesting can be used as a sustainable power source for various applications. Usually, the generators are designed as devices with a single degree of freedom (SDoF) along the direction of the driving motion. In this research, harvesting from multi-directional (translational) motion sources will be investigated. Three strategies are assessed: a reference SDoF generator, a SDoF generator using an orientation strategy, and a Multi Degree of Freedom (MDoF) system. This led to the development of a design metric by which any 2D design problem can be described by two dimensionless parameters: the relative strength of vibrations, pv, and the relative dimension of the design space, pl. It was shown that the relative power density (RPD) of a 2DoF system compared to a reference SDoF system only depends on the product p∗=pvpl, and has a maximum of 1.185 for p∗=1. The application of powering a hearing aid is investigated as a case study. It was found that the vibrations in the area of the human head while walking can be represented by a two-directional vibration source with pv=0.55. Three different design spaces are assessed for a miniaturized generator and three different optimal embodiments are found. For one of the considered situations where p∗=1.1, a 2DoF system was found to have a 16% higher power output compared to a SDoF reference. The aim of future work will be the validation of the developed metric.
Original language | English |
---|---|
Title of host publication | Proceedings of the International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS 2018) |
Editors | Sergej Fatikow, Sinan Haliyo, Fumihito Arai, Albert Sill |
Place of Publication | Piscataway, NJ, USA |
Publisher | IEEE |
Number of pages | 9 |
ISBN (Electronic) | 978-1-5386-4841-4 |
ISBN (Print) | 978-1-5386-4842-1 |
DOIs | |
Publication status | Published - 2018 |
Event | MARSS 2018: 3rd International Conference on Manipulation, Automation and Robotics at Small Scales - Nagoya, Japan Duration: 4 Jul 2018 → 8 Jul 2018 |
Conference
Conference | MARSS 2018: 3rd International Conference on Manipulation, Automation and Robotics at Small Scales |
---|---|
Country/Territory | Japan |
City | Nagoya |
Period | 4/07/18 → 8/07/18 |
Keywords
- Head area
- Human motion
- Multi degree of freedom
- Multi-direction
- Vibration energy harvesting