著者

高橋 翔太郎 和田 圭二

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.1, pp.33-40, 2022-01-01 (Released:2022-01-01)

参考文献数

21

被引用文献数

1

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In this study, the authors propose a simple method for estimating stray capacitance of toroidal inductors. The proposed method calculates the total stray capacitance of a toroidal inductor based on the stray capacitance between the winding and the core, calculated by considering the insulation (plastic case and plastic molding) that contains the magnetic core. The frequency characteristics of the toroidal inductor can be calculated by substituting the calculated stray capacitance in the analytical model of the inductor, which takes into account the frequency dependence of the complex magnetic permeability of the magnetic material. In order to evaluate the proposed method, toroidal inductors were fabricated based on carbonyl iron dust, amorphous and nanocrystalline magnetic cores. Comparison between measured and calculated impedances clarify that the proposed method can calculate the stray capacitance of toroidal inductors with practical accuracy.

著者

高橋 空路 美井野 優 髙木 茂行

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.142, no.1, pp.18-25, 2022-01-01 (Released:2022-01-01)

参考文献数

26

---

We propose a new bias torque function control (B-TFC) method for electric vehicles (EVs) for starting on uphill roads and confirm its effectiveness by simulations and experiments. In the simulation, we developed a new model for accurate behavior of the evaluation system. We compared three kinds of slip suppression control methods, namely without TFC, with TFC (conventional), and the B-TFC. In the case of the B-TFC method, an EV carrying one person can start moving on a 1° wet uphill road without rolling backward. In the simulation using the developed model, the torque is suppressed and fluctuates between the command and bias torques. Then, the vehicle speed at 3s is 1.7m/s, which is the highest among the compared methods. The experimental results therefore agree with the simulations and the developed simulation model reproduces the experimental trends with high accuracy. We confirm that the proposed B-TFC method improves acceleration and slip suppression performances.

著者

穐本 能彬 塩野 武男 児玉 浩憲

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.2, pp.87-90, 1994-02-20 (Released:2008-04-17)

著者

山崎 素央 福沢 章 森田 公

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.3, pp.156-160, 1994-03-20 (Released:2008-04-17)

参考文献数

6

被引用文献数

3 1

著者

寺口 直希 南 政孝

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.139, no.5, pp.259-263, 2019-05-01 (Released:2019-05-01)

参考文献数

25

---

A Tesla coil is a resonant transformer circuit that generates very high voltages which are made to arc through the air. Recently, a solid state Tesla coil was produced according to developing the semiconductor. In addition, the solid state Tesla coil makes sound by the air discharge. Hence, the sound is used as musical devices. In the past, the musical solid state Tesla coils are generated by PWM (Pulse Width Modulation) method. However, it is difficult to use the high pitch sound and the tone color. This paper investigates the musical solid state Tesla coil by using not PWM method but PRF (Pulse Repetition Frequency) method. As the result, the proposed musical solid state Tesla coil provides good sound.

著者

堀江 義雄

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.74, no.787, pp.464-470, 1954-04-01 (Released:2008-11-20)

参考文献数

13

著者

宇野 達也

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.114, no.12, pp.836, 1994

著者

香取 照臣 泉 隆 高橋 寛

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.116, no.1, pp.79-87, 1995-12-20

参考文献数

5

被引用文献数

2

---

The route guide sign system is one of the route induction system in the road traffic. However, there are cases that some addresses are unfit in the network, on regard to addresses among the route guide sign boards. Sometimes, this system is not kind for drivers. We study for the optimization of the above route guide sign system.<br>One of evaluation methods of route guide sign system is the method using drive simulator. An overall evaluation can be done by using the drive simulator, but each driver's subjectivity are included in the evaluation results.<br>In this paper, we propose the new method of objective evaluation using conditions of appropriate induction addresses for optimization route guide sign system. There are three conditions, induction considering each lines, induction considering direction at crossing point, and continuation of induction addresses on route guide sign board. And we suggest the method to improve these system using the result of its evaluation.<br>Finally, we show an example of above evaluation method and improvement to the route guide sign system at the Northwest CHIBA area.

著者

香取 照臣 泉 隆 高橋 寛

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.115, no.2, pp.157-164, 1995-01-20

参考文献数

8

被引用文献数

3

---

The route guide sign system is one of the route induction system in the road traffic. However, there are partially miss-match notation in the network because it includes contradiction in each notation addresses.<br>Under these background, we are going to study on the method of notation addresses decision for the route guide sign boards, and will evaluate its network.<br>In this paper, we describe the methods of evaluation for the route guide sign system and detection of stray crossing points in a network, using the induction route by drive-simulation. In the method of evaluation, we use the standard induction routes. The standard induction routes are imaginative one by route guide sign system. By comparing the standard route's distance with the result of drive simulation's one, evaluation values are calculated and stray crossing points are detected.<br>By using this method, the route guide sign systems are evaluated in quantity, and the wrong route guide sign boards are likely detected.<br>Finally, we show an application example of this evaluation method and detection of the stray crossing points for the route guide sign systems at the Northwest CHIBA area.

著者

朴 永鎰 内田 雅文

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 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.127, no.10, pp.1811-1812, 2007-10-01

参考文献数

7

被引用文献数

2 2

---

In present, personal identfication system have been used to input identification-numbers and passwords by keyboards and touch panels. When a user enters their identification-numbers and passwords an observer could easily see the user's secret details. In this report, new personal identification, which system constitutes tactile sense information using tactile stimuli and based on the cardinal trait of the tactile sense, is proposed.

著者

高木 浩一 浪平 隆男

出版者

一般社団法人 電気学会

雑誌

電気学会誌 = The journal of the Institute of Electrical Engineers of Japan (ISSN:13405551)

巻号頁・発行日

vol.126, no.12, pp.784-787, 2006-12-01

参考文献数

6

被引用文献数

5 3

---

本記事に「抄録」はありません。

著者

西田 睦

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.141, no.12, pp.737, 2021

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<p>人類が新型コロナウイルス感染症の大規模な拡大(コロナ・パンデミック)に立ち向かうことになって,1年半余が経った。2021年9月の段階で,世界全体の感染者は累計2億人を超え,死者数は500万人に近づいている。画期的なワクチンの開発が急ピッチで行われ,その接種が</p>

著者

本田 公韶 井上 岱介 北村 郁夫 上西 一馬

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.84, no.905, pp.242-250, 1964-02-01 (Released:2008-04-17)

参考文献数

4

著者

田中 元志 矢島 拓明 新山 喜嗣

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.141, no.6, pp.720-726, 2021

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<p>Eye movement was measured when food and wear pictures that consisted of four items with different positions were subjectively evaluated by seven-grade scale (like - dislike), and the relationship between the subjective evaluation and feature parameters obtained from eye fixation and scanpath was investigated. In results, a significant relationship between the saliency of pictures obtained by GBVS and the normalized total fixation time was not observed. And the eye movement at the initial state might be similar, independent of the saliency of items in the pictures. The fixation time to the item of the negative `dislike' evaluation became relatively longer, when the evaluation was negative irrespective of the experimental condition. These feature parameters would be useful for quantifying the evaluation of the pictures.</p>

著者

木部 道也 長嶋 満宏 土志田 実 釜 啓輔 大中道 崇浩

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.129, no.11, pp.746-750, 2009-11-01 (Released:2009-11-01)

参考文献数

7

被引用文献数

3 3

---

This paper describes an uncooled infrared (IR) camera especially optimized for small size & weight, less power consumption without degrading noise equivalent temperature difference (NETD). This camera has two features, including a wafer-level chip scale vacuum package with 160x120 SOI-diode array and germanium lid for good IR transmission, and also a real-time signal correction capability with respect to ambient temperature. These features enabled the considerable size/power consumption reduction and the operation without thermoelectric cooler (TEC) which usual IR cameras require for temperature stabilization. As a result, we realized compact infrared camera (less than 71grams) with low-power consumption and excellent NETD of 22 mK (F/0.8 optics).

著者

宮本 和一郎

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.45, no.448, pp.1024-1034, 1925 (Released:2008-11-20)

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1. 本文は波長計校正用として同期音叉の適否を檢せん爲め其正確度を測定したる方法及結果の概要である。2. 測定には筆者考案の時計仕掛廻轉計を用ひた。之れは非常に正確なる廻轉數の讀みを示すものである。3. 測定の結果負荷小なる程正確度大る事、及び交流端子と音叉の脚との接觸間隙大なる程正確度大にして、常に0.2%以下の速度變動率内に保つ事が解つた。而し直流電源の電壓變動する時は同期音叉の正確度は大いに崩れるもの上して蓄電池を電源とせねばならぬ事が解つた。

著者

川路 茂保 金 煥成

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.116, no.12, pp.1230-1237, 1996-11-20

参考文献数

17

---

The loop transfer property (LTR) of a full state feedback control system can be recovered by an observer. But the disturbance attenuation property (DAPR), which is characterized by the closed loop transfer function from the disturbance to the controlled output, may not be recovered by the same observer. It is desirable in practical control systems that both properties should be able to be recovered simultaneously.<br>In this paper, we show that the simultaneous recovery is possible by a proportional integral (PI) observer. Two remarkable results are presented: First, a new design method of PI observer is presented by utilizing the relation between PI observer and another observer which is constructed for a new augmented system. Second, the condition for simultaneous recovery by PI observer is given, and a design method of PI observer for simultaneous recovery is derived based on modified LQG/LTR. Finally, an example demonstrates the effectiveness of the proposed design method.

著者

熊谷 崇宏 伊東 淳一 日下 佳祐 佐藤 大介

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.12, pp.962-975, 2021-12-01 (Released:2021-12-01)

参考文献数

21

被引用文献数

1

---

This paper proposes an automatic design method of typical parameters such as number of phases, number of poles, stack thickness, stator outer diameter, rotor outer diameter, and number of turns of a switched reluctance motor from the requirement of the N-T characteristic. In particular, a specific parameter related to the magnetic saturation is defined in order to arbitrarily determine how much to use the magnetic properties of the iron core material. In the proposed method, the typical motor parameters in order to realize a miniaturized volume which satisfies an input N-T characteristic are obtained by setting the parameter related to magnetic saturation, maximum electrical frequency, maximum current density, maximum copper loss, conductor slot fill factor, magnetic properties of material, and input voltage. The designed motor is analyzed using the Finite Element Method in order to validate the proposed method.

著者

髙橋 和輝 苗 山 片山 昇

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.12, pp.1011-1012, 2021-12-01 (Released:2021-12-01)

参考文献数

2

---

This study proposes a method to estimate the states-of-charge (SoCs) and states-of-temperature (SoTs) of secondary batteries using neural networks and electrochemical impedance spectroscopy. The impedances in the frequency range of 100mHz-10kHz of a general lithium-ion battery were measured for various SoCs and SoTs and used for training a neural network with two hidden layers. The performance was evaluated using the measured impedances that were not used for the training. The mean square errors obtained were 2.094% and 0.511°C for SoC and SoT respectively.

著者

佐々木 博司

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. B (ISSN:03854213)

巻号頁・発行日

vol.110, no.12, pp.995-998, 1990

被引用文献数

1