https://scholars.lib.ntu.edu.tw/handle/123456789/577062
標題: | Development of a two-dimensional piezoelectric traveling-wave generator | 作者: | Lin Y.-M Hsu Y.-H Su W.-C Kao Y.-T CHIH-KUNG LEE |
關鍵字: | Natural frequencies; Piezoelectricity; Analytical method; Core structure; Directional movements; Phase difference; Square plates; Traveling wave; Voltage ratios; Wave generators; Electrodes | 公開日期: | 2021 | 卷: | 32 | 期: | 10 | 起(迄)頁: | 1071-1088 | 來源出版物: | Journal of Intelligent Material Systems and Structures | 摘要: | In this article, we present a new method to control the direction of traveling waves in either an x-direction or y-direction on a two-dimensional square plate. The core structure was composed of a piezoelectric serial bimorph with four electrodes. Each electrode was spatially designed to activate one of the bending modes and which included the ability to reduce adjacent modes and minimize interference. Our new method differs from other reported methods in that the four electrodes were driven at designated resonant frequencies. In our wave generator, different driving amplitudes and phases were applied to induce the traveling waves to propagate in a specific direction. To design the directional movement and to better understand the pattern of induced traveling waves, an analytical solution was derived to assist in the design of the four driving electrodes. Using our newly developed analytical method, traveling waves can be controlled to travel in either the x-direction or y-direction using two different sets of electrodes, where each electrode can be driven at a specific but different bending mode. We found that both the voltage ratio and phase difference between the two driving electrodes are important factors for optimization. ? The Author(s) 2020. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088830646&doi=10.1177%2f1045389X20943942&partnerID=40&md5=7cab7437dd61bb030bd136aed9639352 https://scholars.lib.ntu.edu.tw/handle/123456789/577062 |
ISSN: | 1045389X | DOI: | 10.1177/1045389X20943942 |
顯示於: | 應用力學研究所 |
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