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Published in: Microsystem Technologies 8/2019

11-01-2019 | Technical Paper

Study on the dynamic characteristics of piezoelectric inkjet print head with basic excitation methods

Authors: Jiao Dou, Xing Wang, Kehong Li, Shangfei Wang, Shixia Yan, Jiangang Zhou, Helin Zou

Published in: Microsystem Technologies | Issue 8/2019

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Abstract

In this paper, the dynamic characteristics of piezoelectric inkjet print head were studied by analyzing vibration mode and resonant frequency. The modal analysis was carried out by using the multiphysics simulation software COMSOL. The vibration characteristics of print head were measured. The piezoelectric actuator and print head were excited by two basic excitation methods: fast sine sweep and white noise, respectively. The speed response was measured by the laser Doppler vibrometer and the power spectrum was obtained by using MATLAB software to obtain the first-order resonant frequency. The results show that the first-order mode is most suitable for droplet formation and ejection, and the print head in the working state is indeed under the first-order mode. The fluid–solid coupling effect has great influence on the shape and amplitude of the vibration curve. The presence of liquid lower the peak of the resonant frequency and the severe liquid motion affect the number of peaks of the resonant frequency.

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Metadata
Title
Study on the dynamic characteristics of piezoelectric inkjet print head with basic excitation methods
Authors
Jiao Dou
Xing Wang
Kehong Li
Shangfei Wang
Shixia Yan
Jiangang Zhou
Helin Zou
Publication date
11-01-2019
Publisher
Springer Berlin Heidelberg
Published in
Microsystem Technologies / Issue 8/2019
Print ISSN: 0946-7076
Electronic ISSN: 1432-1858
DOI
https://doi.org/10.1007/s00542-019-04298-2

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