Research on Active Absorption Using Piezoelectric Ceramic

• Published in: Journal of Low Frequency Noise, Vibration and Active Control Vol. 26; no. 1; pp. 29 - 41
• Main Authors: Congyun, Zhu, Zeqiang, Zhao, Qibai, Huang
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.03.2007; Multi Science
• Subjects: Acoustics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Noise: its effects and control; Physics; Solid mechanics; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Piezoelectric ceramic active absorption ANC; Measurement; Vibration; Secondary source; PZT; Experimental study; Noise control; Modeling; Piezoelectric ceramics; Wave reflection; Active system; Voltage; Plane wave; Electromechanical properties
• ISSN: 0263-0923; 1461-3484; 2048-4046
• DOI: 10.1260/026309207781487484

Piezoelectric ceramic (PZT) is used as the main material of the transducer, energy exchanger, arrester etc. and used in a control system in sound and vibration because of its excellent mechanical and electrical coupling performance, based on which, in this paper, a new active absorption system is designed in which the piezoelectric ceramic is used as the absorption material. Two equal distance microphones are placed in the front of the piezoelectric ceramic in order to measure the incident plane wave. Then, a voltage is applied on the piezoelectric ceramic in order to make the reflected wave zero using the adaptive controlling. Finally, an experiment is carried out and a good absorption effect attained. The experimental results denote that the theory is correct and practical.