セルフセンシング形フレキシブルアレイ探触子における自己形状計測精度の向上

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2023/09/01

タイトル(英語): Improvement of Self-shape Measurement Accuracy in a Self-sensing Flexible Array Probe

著者名: 吉川　康太（和歌山大学大学院システム工学研究科），村田　頼信（和歌山大学システム工学部）

著者名(英語): Kohta Yoshikawa (Graduate School of Systems Engineering, Wakayama University), Yorinobu Murata (Faculty of Systems Engineering, Wakayama University)

キーワード: セルフセンシング，PVDF，圧電効果，超音波探触子，フレキシブルアレイ　　self-sensing，PVDF，piezoelectric effect，ultrasonic probe，flexible array

要約(英語): Nowadays, flexible array probes are actively studied for ultrasonic non-destructive inspection of various shapes. However, in order to perform imaging with ultrasound, it is necessary to know the shape of the probe at the time of imaging. Conventionally, a method such as attaching a surface shape measurement device to a flexible array probe has been used, but there are problems such as the cost and labor involved in using a separate device. Therefore, in this research, we developed a self-sensing flexible array probe that can measure its own shape using the piezoelectric effect of the array sensor. The principle of self-sensing is the piezoelectric effect of the ultrasonic element, and the voltage output when the element is deformed is measured by time integration. In addition, we devised a shape estimation method at an inflection point where the curvature changes in shape measurement, and tried to improve the shape measurement accuracy. As a result, the positional coordinates of the element could be estimated with an error of 0.5 mm from the true value, and the response speed was about 200 ms or less.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.143 No.9 （2023） 特集：知能メカトロニクス分野と連携する知覚情報技術

本誌掲載ページ: 854-861 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/143/9/143_854/_article/-char/ja/