Measurement of a piezoelectric transducer’s mechanical resonant frequency based on residual vibration signals

摘要：

The paper presents a novel measurement method for a piezoelectric transducer mechanical resonant frequency. A transducer natural frequency is obtained through analyzing residual vibration signals spectrum based on the Morlet wavelet transform, and subsequently the transducer mechanical resonant frequency is calculated against the relationship of the natural frequency and the mechanical resonant frequency, i.e. a novel scheme being termed as twice exciting/sampling in this work. Experiments carried on a transducer (the mechanical resonant frequency was 19.72 kHz) have shown that the accuracy was up to 0.18％ under the condition of the exciting frequency being set manually within 15~29 kHz. The constructed measurement system has advantages of simple structure and low cost.

关键词： piezoelectric transducer mechanical resonant frequency natural frequency Morlet wavelet analysis twice exciting/sampling scheme

作者: Huijuan Dong Jian Wu Hui Zhang Guangyu Zhang

作者单位: School of Mechatronics Engineering Harbin Institute of Technology Harbin,Heilongjiang,150001,P.R. CHINA

会议类型: 国际会议

会议名称: 2010 IEEE信息与自动化国际会议(ICIA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1-5

在线出版日期: 2010-06-20（万方平台首次上网日期，不代表论文的发表时间）