著者

新津 修平 前田 大輔

出版者

THE LEPIDOPTEROLOGICAL SOCIETY OF JAPAN

雑誌

蝶と蛾 (ISSN:00240974)

巻号頁・発行日

vol.73, no.1, pp.7-11, 2022-03-31 (Released:2022-05-14)

参考文献数

18

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In the present study, Psyche casta (Pallas, 1767) is newly recorded in Japan. Illustrations of both adults and male genitalia are provided. In addition, the taxonomic issue around this species is discussed based on morphological characters.

著者

竹中 誠一郎 吉武 博美 藤本 拓司 〓 福泰 前田 大輔 西 正勝 伊東 隆利

雑誌

障害者歯科 (ISSN:09131663)

巻号頁・発行日

vol.29, no.3, 2008-09-30

著者

中尾 矩也 戸張 和明 杉野 友啓 伊藤 佳樹 三島 光博 前田 大輔

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.141, no.1, pp.18-27, 2021-01-01 (Released:2021-01-01)

参考文献数

16

被引用文献数

1

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This paper presents a control scheme for smooth torque production in permanent-magnet synchronous motor drives. The proposed control scheme consists of two techniques: a feedforward compensation for torque ripple minimization and an online parameter estimation technique for harmonic fluxes. The feedforward compensation is constructed on a position-sensorless vector control system and generates voltage commands to suppress torque ripples. The command calculation process requires the parameters of the harmonic fluxes; therefore, the proposed control scheme includes their estimator and calculates them from detected current information. These techniques are simpler than existing ones and can be implemented on a computational device with a small amount of calculation load. The proposed control scheme is verified by performing simulations and experiments.