| Title |
Study on High-Efficiency Driving of a Piezo Device Using Voltage Inversion Circuit |
| Authors |
박한빈(Park, Han-Bin) ; 박진호(Park, Jin-Ho) ; 홍선기(Hong, Sun-Ki) ; 강태삼(Kang, Taesam) |
| DOI |
https://doi.org/10.5370/KIEE.2012.61.12.1843 |
| Keywords |
Piezo devices ; Piezo device driving ; Energy efficiency ; Capacitive load driving |
| Abstract |
Piezo devices have large power density and simple structure. They can generate larger force than the conventional actuators. It has also wide bandwidth with fast response in a compact size. Thus the piezo devices are expected to be used widely in the future for small actuators with fast response time and large actuating force. However, the piezo actuators need high voltage with high driving current due to their large capacitive property. In this paper, we propose a simple method to drive piezo devices using voltage inversion circuit with coil inductance. Experiments with real circuit demonstrates that the proposed scheme can improve the energy efficiency very much. |