著者
佐藤 宣夫 角 真輝 出口 雄一 星田 光一 山田 晃嵩
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.140, no.8, pp.512-515, 2020-08-01 (Released:2020-08-01)
参考文献数
3

1.はじめに日本はエネルギー資源に乏しい国であるという認識が変わるかもしれない(1)。太陽光や風力などを活用して発電する再生可能エネルギーは,供給源が自然現象に由来することから,計画

1 0 0 0 歐米視察談

著者
原田 胡一郎
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.41, no.401, pp.903-909, 1921

筆者が社命により、昨年十一月十一日より本年九月九日迄歐米諸國へ視察族行中の見聞の一端にして、先づ米國に於ける角働變電所に就て略説し、クリプランド市の變電所の模様を述ぺ、米國及歐洲の電化鐵道の見聞な述べ、電弧熔接及電氣機械製造業の見聞の一端を述べたり。
著者
原 仁 岸 直輝 岩岡 秀人
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.122, no.5, pp.274-279, 2002

We have developed an infrared detector and a micro variable infrared filter for micro-spectrum analyzing devices. Two infrared detectors and the infrared filter were mounted on the identical package. A micro-spectrum analyzing device of 1cm<SUP>3</SUP> volume as the two wavelength NDIR system for combining these elements with the infrared source was able to measure the concentration of carbon dioxide.
著者
兼安 一成 大塚 和之 瀬戸口 泰弘 中原 毅 園田 茂代 麻生 功
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・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society (ISSN:13418939)
巻号頁・発行日
vol.118, no.2, pp.119-124, 1998-02
参考文献数
6
被引用文献数
1 3

A CO<sub>2</sub> sensor was set up by using Na<sub>3</sub>Zr<sub>2</sub>Si<sub>2</sub>PO<sub>12</sub> (NASICON) as a solid electrolyte, Li<sub>2</sub>CO<sub>3</sub> as a carbonate phase. The EMF (Electromotive force) was linear to the logarithm of CO<sub>2</sub> concentration and hardly depended on interfering gases by using a zeolite filter. The &Delta; EMF (EMF<sub>Air</sub>-EMF<sub>Gas</sub>) was stable even after the test of unpowered exposure to a high humidity atmosphere. The CO<sub>2</sub> monitor in which the CO<sub>2</sub> concentration is calculated by the &Delta; EMF using a new renovating system of the standard EMF was developed as a monitor for air quality control. The output of the monitor indicated a good agreement with that of the usual NDIR analyzer at the field-test in the office.
著者
原 崇文 古関 隆章 岡田 万基 久富 浩平
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.133, no.9, pp.909-916, 2013-09-01
参考文献数
9
被引用文献数
2

Suppression of slip and reduction of friction between the rail and the wheel are important in railway systems. This paper proposes a novel slip re-adhesion control based on monitoring the excessive torque and the excessive angular momentum for four-axle and two-truck model. The effectiveness of the proposed method has been confirmed by mathematical analysis. In addition, the excessive angular momentum compensation of the proposed method was evaluated using real-world train test data. Furthermore, the proposed method can estimate the disturbance torque from real-world train test data.
著者
都甲 潔
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・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society (ISSN:13418939)
巻号頁・発行日
vol.124, no.7, pp.229-232, 2004-07-01
参考文献数
5

A taste sensor with global selectivity is composed of several kinds of lipid/polymer membranes for transforming information of taste substances into electric signal. The sensor output shows different patterns for chemical substances which have different taste qualities such as saltiness and sourness. Taste interactions such as suppression effect, which occurs between bitterness and sweetness, can be detected and quantified using the taste sensor. The taste and also smell of foodstuffs such as beer, coffee, mineral water, soup and milk can be discussed quantitatively. The taste sensor provides the objective scale for the human sensory expression. Multi-modal communication becomes possible using a taste/smell recognition microchip, which produces virtual taste. We are now standing at the beginning of a new age of communication using digitized taste.
著者
金子 健二
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.127, no.3, pp.152-155, 2007-03-01 (Released:2007-06-01)
参考文献数
16
被引用文献数
1 2

本記事に「抄録」はありません。
著者
松本 雅行
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.127, no.11, pp.461-466, 2007-11-01 (Released:2007-11-01)
参考文献数
8
被引用文献数
3

“Security” and “Stability” are an important pair in transport by rail, and to be important with both. Recently railway system supporting this becomes gigantic and becomes complicated. It means that it goes without saying that sensing technology is necessary to move these precisely.In this paper sensing technologies used for various fields of a railroad are described.
著者
中野 和司
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.122, no.11, pp.775-778, 2002-11-01 (Released:2008-04-17)
参考文献数
6
著者
加藤 崇 佐々木 健介 Diego Fernandez Laborda Daniel Fernández Alonso David Díaz Reigosa
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.140, no.4, pp.265-271, 2020-04-01 (Released:2020-04-01)
参考文献数
10
被引用文献数
6

This paper presents a novel methodology of magnet temperature estimation using a magnet flux linkage observer for a Variable Leakage Flux Interior Permanent Magnet Synchronous M (VLF-IPMSM), whose parameters vary depending on load current conditions. The magnet temperature estimation algorithm consists of a Gopinath-Style flux observer, magnet flux linkage observer, and magnet temperature estimator based on the look-up table. The estimation accuracy is evaluated on d-q current plane by using both a behavior model of JMAG-RT and a control model of MATLAB Simulink. Then it is shown that the proposed methodology can be applied to a VLF-IPMSM for magnet temperature estimation.
著者
安藤 良夫
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.93, no.6, pp.524-527, 1973-06-20 (Released:2008-04-17)
参考文献数
3
著者
加納 善明 藪見 崇生
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.140, no.4, pp.255-264, 2020-04-01 (Released:2020-04-01)
参考文献数
24
被引用文献数
4

This paper presents the design studies of a multi-layer interior permanent magnet synchronous motor (IPMSM) with a radially oriented arc-shaped hot-deformed magnet for automotive traction drives. Specifically, by using the IPMSM on a 2010 Prius as a benchmark, we designed an IPM rotor geometry that simultaneously achieves a 20% improvement in both the maximum power and constant output power line with high efficiency while maintaining maximum torque. A prototype of the designed three-layer IPMSM was manufactured and evaluated. The results of the tests conducted on the prototype are reported and discussed in this paper.