著者

山村 昌

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.111, no.5, pp.421-425, 1991

著者

平田 光男 城所 隆弘 上田 伸治

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.129, no.9, pp.938-944, 2009-09-01 (Released:2009-09-01)

参考文献数

9

被引用文献数

16 16

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This paper proposes a new design method of nanoscale servo control for a Galvano scanner by using FFSC (frequency-shaped final-state control) method. In the Galvano scanner, it is important to reduce the residual vibration after positioning; further, this scanner must be robust to the variation of the resonance modes of the plant. In this paper, a feedforward input is designed by using FFSC by considering not only nominal performance but also robust performance. Simulations and experimental results are shown to evaluate the effectiveness of the proposed method.

著者

伊藤 秀之

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.138, no.2, pp.NL2_12, 2018-02-01 (Released:2018-02-01)

参考文献数

1

著者

高橋 健 早瀬 仁則 初澤 毅

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.120, no.4, pp.156-161, 2000-03-20 (Released:2009-04-01)

参考文献数

8

被引用文献数

1

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A fabrication process of tungsten probes for surface profile measurements has been improved. The probe contour is designed to have an optimum shape for the use of tapping stylus. An improved DC electropolishing is applied for the elimination of surface impurities and smaller stylus radius with exponential contour, which uses an electrical flushing and a surface tension control of the electrolyte. The process is experimentally confirmed to have advantages for the fabrication of the stabilized stylus contour, typically with a stylus radius of 30nm. They have smoother contours compared with those fabricated by AC electropolishing.

著者

堀 雅寛 木村 守 小泉 孝行

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.137, no.3, pp.230-237, 2017-03-01 (Released:2017-03-01)

参考文献数

16

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This paper describes the inverter drive characteristics of a 2.4 MW permanent magnet generator (PMG) for a diesel electric propulsion system. We demonstrated the relations between the PWM (Pulse-Width Modulation) pulse patterns and temperature rise in a permanent magnet in a PMG. Additionally, we demonstrated that inverter failure has a significant impact on the current and torque in a PMG.

著者

西村 怜馬 永海 俊治 矢代 大祐

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.7, pp.439-442, 2008-07-01 (Released:2008-07-01)

参考文献数

2

---

本記事に「抄録」はありません。

著者

満倉 靖恵

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.136, no.10, pp.687-690, 2016

被引用文献数

4

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<p>1.はじめに 2013年は脳元年。アメリカ大統領オバマ氏による国家プロジェクト"ブレイン・イニシアティブ(BRAIN Initiative⁽¹⁾)"と呼ばれる巨大科学プロジェクトが発表された年である。BRAINは単に脳の略ではなく,Brain Research through Advancing Innovative Neurotechnologies</p>

著者

村井 敏昭 長谷川 均

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.121, no.10, pp.1049-1054, 2001-10-01 (Released:2008-12-19)

参考文献数

4

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A new type of magnetic levitation system called the Inductrack, has been proposed by R F. Post. This system is composed of a special arrangement of permanent magnets on board which is called the Halbach array, and a close-packed array of shorted coils in the longitudinal direction on the ground. This composition can obtain a large magnetic force, a very low take-off speed and a high lift-to-drag ratio. This paper describes numerical simulations of the Inductrack magnetic levitation by the Fourier series analysis which is utilized in the analysis of superconducting magnetic levitation. By using numerical examples considering a full-scale car model, we reveal the features of the Inductrack system in comparison with the superconducting magnetic levitation.

著者

内藤 治夫

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.4, pp.227-230, 2008-04-01 (Released:2008-04-01)

参考文献数

14

---

本記事に「抄録」はありません。

著者

高橋 理 片岡 健司 小島 央士 浅見 雅之

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.128, no.11, pp.1291-1297, 2008-11-01

参考文献数

4

被引用文献数

6 13

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Once the break-down of the train schedule occurs, the crew schedule as well as the train schedule has to be modified as quickly as possible to restore them. In this paper, we propose an algorithm for automatically modifying a crew schedule that takes all constraints into consideration, presenting a model of the combined problem of crews and trains. The proposed algorithm builds an initial solution by relaxing some of the constraint conditions, and then uses a Taboo-search method to revise this solution in order to minimize the degree of constraint violation resulting from these relaxed conditions. Then we show not only that the algorithm can generate a constraint satisfaction solution, but also that the solution will satisfy the experts. That is, we show the proposed algorithm is capable of producing a usable solution in a short time by applying to actual cases of train-schedule break-down, and that the solution is at least as good as those produced manually, by comparing the both solutions with several point of view.

著者

村田 義直

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.132, no.7, pp.NL7_10, 2012-07-01 (Released:2012-07-01)

参考文献数

2

著者

川勝 理 岡本 光雄

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.106, no.11, pp.1069-1070, 1986-11-20 (Released:2008-04-17)

著者

池亀 亮

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.106, no.11, pp.1081-1085, 1986-11-20 (Released:2008-04-17)

著者

齊藤 文彦

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.135, no.11, pp.NL11_7, 2015-11-01 (Released:2015-11-01)

参考文献数

1

著者

渡邉 朝紀

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.9, pp.613-617, 2002-09-01 (Released:2008-04-17)

参考文献数

13

被引用文献数

1 2

著者

吉田 舜 北園 淳 小澤 誠一 菅原 貴弘 芳賀 達也

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. C (ISSN:03854221)

巻号頁・発行日

vol.136, no.3, pp.340-347, 2016

被引用文献数

3

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In recent years, along with the popularization of SNS, the incidents, which are called flaming, that the number of negative comments surges are on the increase. This becomes a problem for companies because flamings hurt companies reputation. In order to minimalize the damage of reputation, we propose the method that detects flamings by estimating the sentiment polarities of SNS comments. Because of the unique SNS characteristics such as repetition of same comments, the polarities of words are sometimes wrongly estimated. To alleviate this problem, transfer learning is introduced. In this research, the sentiment polarities of words are trained in every domain. This will enable to extract the words that are domain-specific and dictate the polarity of comments. These words are occurred in retweets. Transfer learning is implemented to non-extracted words by averaging the occurrence probabilities in other domains. These processes keep the polarities of important words that dictate the polarity of comments and modify the wrongly estimated polarities of words. The experimental results show that the proposed method improves the performance of estimating the sentiment polarity of comments. Moreover, flamings can be detected without missing by monitoring time course of the number of negative comments.

著者

山崎 健一 河本 正 藤波 秀雄 重光 司

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.120, no.3, pp.369-370, 2000-03-01 (Released:2008-07-15)

参考文献数

19

被引用文献数

2

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Estimation of induced current inside a human body exposed to ELF (extremely low frequency) magnetic field are still remaining as an important issue. There are many computational studies reporting the relationship between outer magnetic filed and induced current inside the human body. In addition, there are some limit values regarding human exposure to magnetic field based on the induced current density. Here, we investigated and compared the relationship between magnetic field and induced current among existing literatures and guidelines. The result showed that each estimated value of magnetically induced current varied widely.

著者

野嶋 孝

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.8, pp.515-520, 2006-08-01 (Released:2007-02-06)

参考文献数

8

被引用文献数

1 1

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本記事に「抄録」はありません。

著者

村上 龍希 景山 陽一 西田 眞 白澤 洋一

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.133, no.11, pp.2098-2109, 2013-11-01 (Released:2013-11-01)

参考文献数

24

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In the selection of portraits for ID and a profile, it is useful to retrieve high quality facial images from a lot of portraits. In addition, overexposure may give a negative impact on us because overexposed facial parts look unnaturally white; therefore the recognition for qualitative meaning of overexposure is important for retrieval of high quality facial images. To get qualitative meaning by a image analysis method that can evaluate images quantitatively, it needs a quasi-quantitative evaluation method that can use an index of quantitative evaluation having qualitative meaning. In this paper, we investigated the index for quasi-quantitative estimation of overexposure in the facial image on the basis of the heuristic assumptions, and defined the index as the overexposure intensity (OI). We developed an algorithm with Support Vector Machine (SVM) for judging the OI. The results of experiment conducted with 11 evaluators for analyzing images suggest that the proposed method can retrieve a facial image for ID and the profile with an F-measure of 96.2%.

著者

吉沢 昌純 桐生 昭吾 守屋 正 布施 正

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.109, no.8, pp.581-586, 1989-08-20 (Released:2008-12-19)

参考文献数

7