三極真空管物理モデルパラメータの最適抽出と統計解析

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: 2023/03/01

タイトル(英語): Optimal Extraction and Statistical Analysis of Physical Model Parameters for Nonlinear Properties of Triode Vacuum Tubes

著者名: 乾　雅貴（広島工業大学），溝淵　智哉（広島工業大学），濱崎　利彦（広島工業大学）

著者名(英語): Masaki Inui (Hiroshima Institute of Technology), Tomoya Mizobuchi (Hiroshima Institute of Technology), Toshihiko Hamasaki (Hiroshima Institute of Technology)

キーワード: 三極真空管，ギターアンプ，シミュレーション，統計解析，製造安定性_x000D_　　triode vacuum tube，guitar amplifier，simulation，statistical analysis，manufacturing stability

要約(英語): The purpose of this paper is to estimate the manufacturing-related variation factor from the difference in variance and correlation of the high-precision physical model parameters for a miniature triode vacuum tube 5751 with an amplification factor of 70. The vacuum tube operating model used here is based on physical equations adapted to the large signal input behavior of vacuum tubes used in guitar amplifiers and incorporates the effect of modulation of the amplification factor. This improves the accuracy of the soft clipping and hard clipping characteristics that affect the spectrum of the distortion sound. In order to improve the accuracy of the extraction of such multivariate model parameters, we devised a new analytical formula. In addition, we devised an algorithm for sequential regression analysis of the simulated and measured values against the analytical equation, and all parameter extraction was performed automatically by a computer program. As a result, correlations between the parameters, which had not been found before, were confirmed, and it became clear that the manufacturing and assembly accuracy of the grid electrode strongly affected most of the physical parameters.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.143 No.3 （2023） 特集：スマートシステムと計測・制御技術　－SDGsへの貢献－

本誌掲載ページ: 318-331 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/143/3/143_318/_article/-char/ja/