インピーダンス変化による移動非磁性金属箔の厚さ測定

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/05/01

タイトル(英語): Thickness Measurement of Moving Non-Magnetic Metal Foil by Impedance Variation

著者名: 石田　浩一（徳山工業高等専門学校），板谷　年也（鈴鹿工業高等専門学校），田中　章雄（宇部工業高等専門学校），武平　信夫（徳山工業高等専門学校），三木　俊克（山口大学工学部）

著者名(英語): Koichi Ishida (Tokuyama College of Technology), Toshiya Itaya (Suzuka National College of Technology), Akio Tanaka (Ube National College of Tecnhology), Nobuo Takehira (Tokuyama College of Technology), Toshikatsu Miki (Yamaguchi University)

キーワード: 渦電流，インピーダンス変化，非接触，金属箔，速度特性，厚さ特性　　eddy current，impedance variation，non-contact，metal foil，speed characteristics，thickness characteristics

要約(英語): When an ac-exited coil faces a non-magnetic moving metal foil, an eddy current is induced in the conductor and the coil impedance is influenced by speed and thickness. By examining this speed and thickness characteristics, a coil is used as the thickness sensor.In this paper, we derive rigid theoretical formulas for magnetic field and coil impedance of a circle coil facing a standstill or movement foil conductor. And we present several characteristics with regard to coil inductance and resistance by calculations. The good agreement between the theoretical value and measured value demonstrates the validity of the method. We found that there is not an influence with speed at tens of micrometers thickness, and that the exciting frequency upper limit is 1 kHz.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.5 （2011） 特集：光源・照明の新潮流

本誌掲載ページ: 377-383 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/ieejfms/131/5/131_5_377/_article/-char/ja/