Driving frequency optimization of a piezoelectric transducer and the power supply development
Abstract
Piezoelectric transducers are commonly operated at their resonance frequency. However, from a power dissipation standpoint, this is not the ideal driving frequency. In this paper, an optimized driving frequency in between the resonance and antiresonance frequencies is proposed for the piezo-transducer. First, the optimum driving frequency is characterized using a constant vibration velocity measurement method. The actual input power reveals the lowest power dissipation frequency between the resonance and the antiresonance frequencies, where the transducer behaves inductive. The electrical parameters of the transducer are then determined by an equivalent circuit formulation, which is useful for the electrical circuit analysis of the driver design. A Class E resonant inverter is used to design a capacitive output impedance driver at the optimized frequency by utilizing a series capacitor. Compared with the traditional resonance drive, driving at the optimized frequency reduces the required power by approximately half according to the measurements performed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 01, 2016
- Source ID
- 10.1063/1.4963920
Entities
People
- Husain Shekhani
- Kenji Uchino
- Minqiang Hu
- Tao Yuan
- Tonshaku Tou
- Xiaoxiao Dong
- Yuichi Maida
Organizations
- China Scholarship Council
- Honda Electronics
- National Natural Science Foundation of China
- Office of Naval Research
- Pennsylvania State University
- Southeast University