Research on Nonlinear Equivalent Circuit of High Power Piezoelectric Transducer
According to the Masons equivalent circuit of piezoelectric thickness-mode transducer,transmission line theory and high field dielectric behavior,a nonlinear PSPICE equivalent circuit model was proposed in this paper.This model can reflect the dielectric loss and simulate the nonlinearity of piezoelectric transducer under high electric field by building variable capacitor and resistor,whose values are affected by the level of the input exciting voltage.By establishing the nonlinear equivalent circuit model of high-power piezoelectric transducers in PSPICE tool,the nonlinear characteristic of the transducers under high voltage excitation were analyzed,and impedance matching was carried out,so as to improve the frequency response and bandwidth of the transducers in nonlinear conditions.
Piezoelectric transducer Nonlinear equivalent circuit PSPICE Rayleigh behavior
Zhi-ying LIU Juan HUANG Shou-guo YAN Bi-Xing ZHANG
State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100
国际会议
石家庄
英文
237-241
2019-11-01（万方平台首次上网日期，不代表论文的发表时间）