Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (10): 1421-1425.DOI: 10.12068/j.issn.1005-3026.2016.10.012

• Mechanical Engineering • Previous Articles     Next Articles

Evaluation Method of Single-Frequency Excitation Capability for Piezoelectric Ceramic Exciter

LI Hui, XUE Peng-cheng, SUN Wei, WEN Bang-chun   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2015-10-10 Revised:2015-10-10 Online:2016-10-15 Published:2016-10-14
  • Contact: LI Hui
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Abstract: The linearity index was proposed for evaluating piezoelectric ceramic excitation signal, and experiment was carried out to study a PZT ceramics based on self-designed piezoceramic excitation feedback system. After analyzing the influence factors and law of excitation force, an evaluation method of single-frequency excitation capability was proposed. Evaluation equation was established based on the experimental data, and confidence interval in frequency domain of single-frequency excitation was obtained to make good use of piezoelectric ceramic exciter during the high order vibration test of thin-walled structures. The overall characteristics of the piezoelectric ceramic single-frequency excitation showed that high level excitation capability can be realized under the smaller single-frequency condition, while the low level excitation capability can only be realized under the larger single-frequency condition.

Key words: piezoelectric ceramic exciter, single-frequency excitation, evaluation method;excitation capability, linearity

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