著者

久野 古夫 亀本 一廣

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.124, no.8, pp.695-704, 2004 (Released:2004-11-01)

参考文献数

29

被引用文献数

2 1

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The report provides a relevant explanation about the advance of the television technology, especially about the systems and the receivers, from the beginning of the television development. (1) From the beginning of TV development to World War II. (2) Resumption of TV development by the end of war. (3) Monochrome TV to color TV. (4) Television technology in New Media, Multimedia and IT era.

著者

山本 正純

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.133, no.11, pp.742-747, 2013-11-01 (Released:2013-11-01)

参考文献数

14

被引用文献数

2

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本記事に「抄録」はありません。

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.5, pp.NL5_5-NL5_6, 2022-05-01 (Released:2022-05-01)

著者

菅 哲朗

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.142, no.4, pp.NL4_2, 2022-04-01 (Released:2022-04-01)

著者

内山 洋司

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.126, no.4, pp.222-224, 2006-04-01 (Released:2007-02-06)

被引用文献数

1 2

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本記事に「抄録」はありません。

著者

柚井 英人

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.119, no.7, pp.436-439, 1999-07-01 (Released:2008-04-17)

著者

大村 皓一

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.6, pp.337-340, 2004-06-01 (Released:2008-04-17)

著者

山崎 克巳

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.2, pp.NL2_11, 2022-02-01 (Released:2022-02-01)

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This article introduces the policy and main research activities of Yamazaki Laboratory in Chiba Institute of Technology.

著者

岡野 隆宏

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.122, no.4, pp.212-215, 2002-04-01 (Released:2008-04-17)

著者

高橋 雄造

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.114, no.5, pp.300-305, 1994-05-20 (Released:2008-04-17)

著者

川上 寿一

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.79, no.855, pp.1621-1628, 1959-12-01 (Released:2008-11-20)

著者

高 英聖 古関 隆章 宮武 昌史

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.125, no.12, pp.1084-1092, 2005 (Released:2006-03-01)

参考文献数

15

被引用文献数

22 33

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An algorithm optimizing train running profile with Bellman's Dynamic Programming (DP) is investigated in this paper. Optimal running trajectory of a train which minimizes amount of total energy consumption has been produced under fixed origin and destination, stipulated running time and various track profile. Many previous works on this area adopt the numerical techniques of calculus of variations, Pontryagin's maximum principle, and so on. But these methods often meet some difficulties accounting for complicated actual train running preconditions, e.g. complicated functions which describe electrical motive/brake torque, local constraints of the state variable as speed limitations, non-linear running resistance and variable grade profiles. Basic numerical DP algorithm can cope with such comlicated conditions and give the globally optimal solution. But this method consumes too large computation time for practical uses. We have made the improvements for shorter calculation time of whole optimization process and reducing the numerical error. The confined state space and irregular lattice play most important role for them. Dynamic meshing and effective utilization of system memory also realize shorter computation time. The effectiveness of the proposed method is demonstrated using various complicated running conditions.

著者

早乙女 英夫 川越 博幸 栗田 直幸

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.138, no.12, pp.592-598, 2018

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<p>In this paper, recent topics of low loss technologies of magnetic components for high frequency power converters are discussed. We mainly describe the equivalent circuit model for the ferrite inductor considering high-frequency magnetic loss, new magnetic material technologies for the magnetic components to reduce the loss, and the loss-reduced design technology of high-frequency transformers for the isolated DC-DC converter.</p>

著者

仲上 稔 宮 憲一 志水 健次

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.57, no.585, pp.333-333, 1937-04-10 (Released:2008-11-20)

著者

後藤 太一 井上 光輝

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.141, no.5, pp.327-332, 2021-05-01 (Released:2021-05-01)

参考文献数

28

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Spin-wave integrated circuit using magnetic garnet films attract many interests because of their low Joule heating as well as the wide range of tunability of the wavelength. In this circuit, the phase interference of spin waves plays an important role to show functions. Hence, the control of phase and magnitude of spin waves is an essential technique to realize spin-wave integrated circuits. To control the phase and magnitude of spin waves, we fabricated magnonic crystals using metal periodic structures fabricated on magnetic garnet films. Forward volume spin waves propagated through the magnonic crystal and showed a magnonic bandgap. In this paper, the designing of the magnonic crystal using finite integration technique (FIT) and fabrication of samples using etching were also described.

著者

鈴木 陽一 竹島 久志

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.124, no.11, pp.715-718, 2004-11-01 (Released:2008-04-17)

参考文献数

6

被引用文献数

2 2

著者

坂本 潔 岩路 善尚 遠藤 常博

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.124, no.11, pp.1133-1140, 2004 (Released:2005-02-01)

参考文献数

26

被引用文献数

18 31

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A simplified vector control is proposed as a driving method of permanent magnet synchronous motor (PMSM) for electrical household appliances. Control structure is simplified by eliminating the speed regulator and the current regulator from the conventional vector controller. Output voltage references are determined by feedforward-like calculation using motor parameters, rotation speed command, and current references. In the static characteristic, the proposed vector control method is almost equal to the conventional one, because the voltage references are calculated in the vector space. A practical estimate equation of rotor position is proposed, and the phase locked loop control approach is employed to drive PMSM without position and speed sensors. Design method of two control gains is given. Finally, the effectiveness of the proposed control is verified by simulation and experiments.

著者

門脇 悟志 畑 正 廣瀬 寛 大石 潔 飯田 哲史 高木 正志 佐野 孝 保川 忍

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.124, no.9, pp.909-916, 2004 (Released:2004-12-01)

参考文献数

21

被引用文献数

7 7

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The improvement of adhesion characteristics is important in electric motor coach. We have already proposed the anti-slip/skid re-adhesion control system based on disturbance observer and sensor-less vector control. The effectiveness of the proposed method has been confirmed by the experiment and the numerical simulation using the tested bogie system of electric motor coach.Then, we apply the proposed method to the actual electric multiple units, which is Series 205-5000. In the experimental results of Series 205-5000, this paper discusses that the proposed anti-slip/skid re-adhesion control system has the desired driving wheel torque response. Moreover, this paper proposes the evaluation method of re-adhesion control test results.

著者

荻本 和男

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.114, no.12, pp.822-826, 1994-11-20 (Released:2008-04-17)

参考文献数

6

著者

新中 新二 佐野 公亮

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.127, no.9, pp.950-961, 2007-09-01 (Released:2007-09-05)

参考文献数

28

被引用文献数

12 8

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This paper presents a new unified analysis of estimate errors by model-matching phase-estimation methods such as rotor-flux state-observers, back EMF state-observers, and back EMF disturbance-observers, for sensorless drive of permanent-magnet synchronous motors. Analytical solutions about estimate errors, whose validity is confirmed by numerical experiments, are rich in universality and applicability. As an example of universality and applicability, a new trajectory-oriented vector control method is proposed, which can realize directly quasi-optimal strategy minimizing total losses with no additional computational loads by simply orienting one of vector-control coordinates to the associated quasi-optimal trajectory. The coordinate orientation rule, which is analytically derived, is surprisingly simple. Consequently the trajectory-oriented vector control method can be applied to a number of conventional vector control systems using one of the model-matching phase-estimation methods.