著者

栗原 陽介 渡辺 嘉二郎 米山 満

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.129, no.8, pp.1562-1568, 2009-08-01 (Released:2009-08-01)

参考文献数

12

被引用文献数

1 2

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It is quite important for Japan to maintain or promote the health condition of elderly citizens. Given the circumstances, the Ministry of Health, Labour and Welfare has established the standards for the activities and exercises for promoting the health, and quantitatively determined the exercise intensity on 107 items of activities. This exercise intensity, however, requires recording the type and the duration of the activity to be calculated. In this paper, the exercise intensities are surmised using 3D accelerometer while the subjects are walking and running. As the result, the exercise intensities were surmised to be within the root mean square error of 1.2[METs] for walking and 3.2[METs] for running respectively.

著者

川久保 伸

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.125, no.2, pp.79-83, 2005 (Released:2007-02-02)

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本記事に「抄録」はありません。

著者

沼倉 三郎

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.47, no.473, pp.1346-1351, 1927 (Released:2008-11-20)

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300ヴオルト位の直流電壓を用ひ100ヴオルト程度の交番電壓の波形を靜電的に描寫する目的を以て考案した靜電オツシログラフの構造且に理論の大要が述べてある。本考案に於ては電極板に固體の絶縁物を張りつけて相互間り距離を出來る丈狹めて感度を増そうとしたものである。實驗結果に依ると感度は固有振動數が毎秒3000の振動子に直流300ヴオルト、交流100ヴオルトを加ひた場合に一米の距離に於ける最大振幅を一糎位にする事は容易であると述べてある。尚正しい波形を得る爲の接續法並に構造上の不備に基く誤差を出來る丈取り除く方法を示してある。

著者

守田 光良 吉田 登

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.85, no.918, pp.376-383, 1965

著者

所真 理雄 飯塚 肇

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.96, no.3, pp.178a-183, 1976-03-20 (Released:2008-04-17)

著者

堤 雄飛 小田 篤史 前川 景示

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.142, no.11, pp.800-807, 2022-11-01 (Released:2022-11-01)

参考文献数

34

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At present, there is a growing demand for energy saving to prevent global warming. Thus, the railway industry is also focusing on energy saving methods. Power consumption of running trains has a large variation of approximately 20% caused by drivers' operation. Therefore, improving the running profile can considerably reduce energy consumption. Numerous algorithms for generating energy saving running profiles have been researched and developed. To adapt energy saving operation to various environments, we developed a technology that maintains punctuality without reducing the energy efficiency when temporary differences occur in driving conditions. We propose a method that determines the re-creation command point to complete the re-creation at the switching point of the driving operation in the existing energy-saving target pattern, to achieve both punctuality and ride comfort. As a result of verifying the effect of the proposed method on the conventional method via a simulation, it was confirmed that the proposed method can prevent the increase in the number of operation changes when the driving conditions change, whereas the conventional method increases the number of operation changes.

著者

三田 吉郎

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)

巻号頁・発行日

vol.141, no.9, pp.NL9_1-NL9_5, 2021-09-01 (Released:2021-09-01)

著者

早川 健

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)

巻号頁・発行日

vol.139, no.10, pp.NL10_1, 2019-10-01 (Released:2019-10-01)

著者

岩本 謙吾

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.125, no.5, pp.276-279, 2005 (Released:2007-02-02)

被引用文献数

1

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本記事に「抄録」はありません。

著者

小山田 将亜 國松 禎明 水本 郁朗

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.142, no.11, pp.859-865, 2022-11-01 (Released:2022-11-01)

参考文献数

10

被引用文献数

1

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When designing electric motors, many types of performances (electrical and mechanical characteristics) must be predicted with good accuracy. In general, these performances are determined based on complex theoretical calculations, but theoretical calculations include various assumptions. Therefore, it is difficult to eliminate prediction errors when predicting performance, and it is necessary to improve accuracy by referring actual test data. Recently, with the digitalization of the manufacturing process, a large amount of actual data has been converted into a database, and it is expected to be put to effective use. Here, a neural network that predicts various performances of electric motors using a large amount of actual data as a training dataset, is constructed to achieve uniform and high-precision performance prediction via deep learning. Its practical use for actual design work is verified in this study.

著者

綿引 正倫 赤津 観

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.142, no.11, pp.835-844, 2022-11-01 (Released:2022-11-01)

参考文献数

14

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It is known that the harmonic current of a motor affects torque ripple. Therefore, to take into account the harmonic current in finite element analysis, the voltage input needs to be evaluated however, voltage input analysis is more time-consuming than current input analysis. In this paper, we propose a method to predict the harmonic current and torque ripple of the voltage input analysis of the sine wave by only using the result of the current input analysis of the sine wave in the surface permanent magnet synchronous motor.

著者

渡部 繁則 松本 貴與志

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.128, no.1, pp.36-39, 2008-01-01 (Released:2008-01-01)

参考文献数

4

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本記事に「抄録」はありません。

著者

武居 直行 古荘 純次 岩越 邦男

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.123, no.2, pp.149-155, 2003 (Released:2004-03-31)

参考文献数

24

被引用文献数

5 4

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Most Industrial robots are driven through reduction gears such as harmonic drives and RV gears. Since the exibility of the drive system, the vibratory behavior is caused duringthe operation. When the exibility is considered, the drive system of the robot joint can be modeled as a resonant mechanical system called two-inertia system. Two-inertia systems are the vibratory systems that have poles on/near the imaginary axis. Acceleration feedback and torque feedback are known as the vibration control methods of two-inertia systems. In this paper, we consider the two-inertia system with the feedbacks of motor-acceleration, load-acceleration and torsion-torque. It is shown that each feedback works to control the inertia-ratio of two-inertia system. Then, the control performances are compared. Torsion vibration in robot joint, which occurs owingto the accuracy of components and assembly error of gears at a certain speed of rotation, becomes a problem. In order to suppress the torsion vibration, each feedback is applied to the robot arm. As a result, the torsion vibrations are suppressed e ectively.

著者

加藤 和彦

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.124, no.12, pp.786-789, 2004-12-01 (Released:2008-04-17)

参考文献数

17

被引用文献数

1 1

著者

鈴木 忠平 駒沢 義久

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.83, no.892, pp.19-26, 1963-01-01 (Released:2008-11-20)

参考文献数

11

著者

長谷川 勝

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.138, no.12, pp.NL12_16, 2018-12-01 (Released:2018-12-01)

参考文献数

3

著者

井口 雄介 松本 佳宣

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)

巻号頁・発行日

vol.129, no.10, pp.363-364, 2009-10-01 (Released:2009-10-01)

参考文献数

2

被引用文献数

1 1

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High curvature micro lens array of 240-570 μm diameters and 110-270 μm heights has been fabricated by using UV-LED lithography and imprinting technique. Curved SU-8 structures were fabricated by backside exposure through thin glass substrate because UV-LED array light source has wide directivity characteristics of UV dose. The structure was transferred to Polydimethylsiloxsane (PDMS) mold. Micro lens array of photosensitive acrylic resin was fabricated by using the mold.

著者

田原 鉄也

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.129, no.10, pp.660-663, 2009-10-01 (Released:2009-10-01)

参考文献数

3

被引用文献数

2 1

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本記事に「抄録」はありません。

著者

天野 直樹 渡辺 優

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌B(電力・エネルギー部門誌) (ISSN:03854213)

巻号頁・発行日

vol.128, no.10, pp.1194-1198, 2008-10-01 (Released:2008-10-01)

参考文献数

3

被引用文献数

1 1

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The restrictions of transportation are one of the major parameters for transformer design and affect the available capacity, various characteristics and even reliability. With the progress of increasing power demand, transformer size and weight have been increasing. However, in Japan the restrictions for size and weight in rail and road are strict, and several kinds of technology for transformer construction and transportation method have been developed to meet these requirements.One technology is the disassembled transportation method for transformer. Fortunately we have experienced three type disassembled transportation methods for Kamishiiba power station for approximately 50 years. This paper introduces a history on improvement of disassembled transportation technology and development of large power transformer.

著者

乙部 實 赤沼 哲朗 星野 九平

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.68, no.711, pp.3-7, 1948-01-01 (Released:2008-11-20)