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Prototyping of a CR-Type Ideal Integrator and DC Magnetic Properties

■著者名 園田 敏勝(園田電気電子技術士事務所),松崎 隆哲(近畿大学産業理工学部),山本 哲也(久留米工業高等専門学校電気電子工学科),山光 史哲(九州産業大学理工学部)
■著者名(英語) Toshikatsu Sonoda (SONODA Electrical & Electronics Consulting Engineer Office), Takanori Matsuzaki (Faculty of Humanity-Oriented Science and Engineering, Kindai University), Tetsuya Yamamoto (National Institute of Technology, Kurume College), Fuminori Yamamitsu (Faculty of Science and Engineering, Kyushu Sangyo University)
■価格 会員 ¥550 一般 ¥770
■書籍種類 論文誌(論文単位)
■グループ名 【A】基礎・材料・共通部門
■本誌 電気学会論文誌A(基礎・材料・共通部門誌) Vol.144 No.2 (2024) 特集:イノベーションを創出する最新の計測技術2024
■本誌掲載ページ 72-80ページ
■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/144/2/144_72/_article/-char/ja/
■キーワード CR型理想積分器,直流磁気特性,直流B-Hループ,理想OPアンプ,一次遅れ回路,恒温槽 CR-type ideal integrator,DC magnetic characteristic,DC B-H loop,ideal operational amplifier,first order lag circuit,thermostatic chamber
■要約(英語) The B-H loop is a widely used method of evaluating the magnetic properties of magnetic material. While AC excitation supplies are most commonly used, there are also citations in the literature for DC magnetic properties. The coercive force of magnetic materials is known to be dependent on excitation frequency, decreasing as excitation frequency decreases. The authors experimentally determined the B-H loop DC magnetic properties for the minimum excitation frequency. The experiment required an integrator with an opamp capable of generating stable B-H loops at 0.01 [Hz] or below. There has been no ideal CR-type integrator with an opamp yet because the opamp's gain cannot be increased to infinite. The authors resolved the problem of opamp infinite gain, and prototyped an integrator capable of generating stable B-H loops of 0.01 [Hz] or below, dubbed the CR-type ideal integrator, as described in this paper. The prototyped CR-type ideal integrator was used with a Ni-Fe-based amorphous, 2-3 [mHz] supermalloy magnetic core and an excitation frequency of about 20 [mHz] to generate what can be accurately described as a DC B-H loop. This prototyped CR-type ideal integrator enables B-H loop measurement as frequencies too low for existing CR-type integrators equipped with opamps.
■版 型 A4
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