著者

近藤 陽介 泉地 正人 山本 貴生 平野 尚彦

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.133, no.5, pp.510-517, 2013-05-01 (Released:2013-05-01)

参考文献数

13

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This paper provides a new method to estimate very high frequency (VHF) conducted noise from power electronic devices using numerical analysis. The switching waveforms generated by power semiconductor devices, which are the main noise sources, are calculated by a circuit simulation that uses semiconductor device models. The transfer functions from noise sources to voltage measurement points are calculated by the S-parameters on a power electronic device. The S-parameters are calculated by a 3D electromagnetic simulator. The combined results of circuit simulation and electromagnetic analysis create a good correlation with the actual experimental result in the frequency range of 200MHz and below.

著者

竹内 昭

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.6, pp.373-373, 1999-06-01 (Released:2008-04-17)

著者

清家 正

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.438, pp.5-33, 1925 (Released:2008-11-20)

著者

清家 正

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.51, no.510, pp.33-43, 1931-01-10 (Released:2008-11-20)

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交流電機子の捲線ことに端數スロツト捲等に對し,六ケ數條件を用ひずとも方一寸の紙で解決したものである。たゞ捲線實施の條件としてスロツト數が單層捲は「2m」,二層捲は「m」で割れさへすればよい。

著者

稲田 脩二 梶原 祐輔 島川 博光

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.135, no.9, pp.1149-1150, 2015-09-01 (Released:2015-09-01)

参考文献数

3

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The evaluation of past processes of production from farming records enables job-changing middle or advanced farmer to work more effectively. The paper proposes a method to discriminate farm works from viewpoint videos, reducing the load of farmers. In this method, farmers wear a camera embedded in a glasses to acquire viewpoint videos during their farm works. To confirm the effectiveness of the method, it is applied to the discrimination of watering, plowing, adding fertilizer, disbudding, and seeding. As a result, the method has discriminated watering and plowing with high accuracy using routing information of farm works. In addition, this paper has discussed important factor for farm-works discrimination and the problem of viewpoint video.

著者

酒井 茂

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.111, no.8, pp.626-632, 1991-08-20 (Released:2008-12-19)

参考文献数

4

著者

若林 整

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.121, no.6, pp.590-590, 2001-06-01 (Released:2008-07-15)

著者

大崎 博之

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.4, pp.211-213, 2016

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1.LDIAの成り立ち 産業用リニアドライブ国際シンポジウム (International Symposium on Linear Drives for Industry Applications: LDIA) は,電気学会産業応用部門主催でスタートした日本発祥の国際シンポジウムであり,リニアモータ,リニアアクチュエータ,磁気浮上などの技術とそれらの産業応用

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.103, no.12, pp.1239-1239, 1983 (Released:2008-11-20)

著者

小川 徹

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.927, pp.1962-1965, 1965-12-01 (Released:2008-11-20)

参考文献数

4

著者

上岡 善信

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.788, pp.589-596, 1954-05-01 (Released:2008-11-20)

参考文献数

14

著者

萩原 朋道 荒木 光彦

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.110, no.4, pp.235-244, 1990-04-20 (Released:2008-12-19)

参考文献数

5

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This paper studies properties of limiting zeros, which are defined as zeros of sampled-data systems resulting from continuous-time scalar systems preceded by zero-order hold with sufficiently small sampling period. Firstly, the regions are clarified in which the limiting zeros corresponding to the zeros of the original continuous-time system should exist. Secondly, other limiting zeros are studied, which are always yielded when the relative degree of the original continuous-time system is greater than or equal to 2 and do not have any counterpart of the original continuous-time system. To be specific, stability of such a zero is studied for the case where the relative degree of the original continuous-time system is 2. Using the above two results, a condition is derived on which all the limiting zeros are stable.Furthermore, relating to strong stabilizability of sampled-data systems, which is defined as possibility of being stabilized by a stable controller and is equivalent to the parity interlacing property (a condition on the location of real zeros and real poles), some criteria are given with which to examine whether limiting zeros are real or not.

著者

開道 力 竹田 和年 脇坂 岳顕 溝上 雅人

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.119, no.7, pp.1010-1015, 1999-07-01 (Released:2008-12-19)

参考文献数

3

被引用文献数

1 4

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Magnetic and mechanical characteristics of adhesive coating non-oriented electrical steel sheet cores were measured in the conditions of motor, comparing with those of welded cores. The deteriorations of iron losses and exciting currents by adhesion are less than those by welding. The noise levels and vibrating levels of adhesive coating cores are about 10dB lower than welded cores. The results of modal analysis of adhesive coating core and welded one support the results of noise and vibration tests. The heat conductivities of adhesive coating cores in lamination direction are higher.

著者

船石 吉平

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.60, no.622, pp.176-184, 1940-05-10 (Released:2008-11-20)

著者

高野 富裕 松本 啓之亮 大木 功 大橋 敏明

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.115, no.7, pp.795-802, 1995-06-20 (Released:2008-12-19)

参考文献数

8

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The authors have proposed a new framework of automatic knowledge acquision method and its prototype system has been reported at(6), which has generated switching sequences for substations. This paper will present its application to instruction table generation for local load dispatching offices. In the case of dispatching office the huge number and individual particularity are the points at issue. The office has to deal with hundreds of substations and transmission lines, and make a few hundreds of switching instruction tables a month. Generating tables is one of the most difficult tasks because the uniqueness of substations such as structural differences and particular management rules have prevented us from completing knowledge base which will contain thousands of rules. Our approach concerns the point for easy knowledge acquisition of the expert system, using an original learning algorithm named HCL (Hierarchical Concept based Learning). The HCL generates operational knowledge from cases in the past. This paper will discuss the fundamental problems of instruction table generation for dispatching offices and the solution to it by our approach. The method will be shown to construct and update its knowledge base automatically, using an actual network and operational cases of a dispatching office.

著者

北山 哲士 安田 恵一郎

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.125, no.5, pp.813-820, 2005 (Released:2005-08-01)

参考文献数

24

被引用文献数

4 8

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Particle Swarm Optimization (PSO) for mixed integer programming problems is proposed. PSO is mainly a method to find a global or quasi-minimum for a nonlinear and non-convex optimization problem, and few researches about optimization problems with discrete decision variables have been studied. In this paper, we present the treatment of discrete decision variables. To treat discrete decision variables as a penalty function, it is possible to treat all decision variables as a continuous decision variable. As a result, the penalty parameter for the penalty function is needed. In this paper, we also present how to determine the penalty parameter for the penalty function. Through mathematical and structural optimization problems, we examine the validity of PSO for the mixed decision variables.

著者

賀屋 和昭

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.107, no.5, pp.569-569, 1987-05-20 (Released:2008-12-19)

著者

田村 宏樹 唐 政 石井 雅博

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.123, no.10, pp.1822-1829, 2003 (Released:2004-05-28)

参考文献数

10

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Constraint satisfaction problem consists of the combination of some constraints, and it is a very difficult problem. The neural network is used as a method of solving constraint satisfaction problems. In this research, we proposed a method of solving constraint satisfaction problems by neural network having self-feedback. The feature of this proposed method is simplifying constraint satisfaction problems. It becomes easy to search an optimum solution by this proposed method. This proposed method was applied to N-queen problem and four-color problem which are constraint satisfaction problems. From Simulation result, this proposed method can solve the N-queen problem and four-color problem at high speed and high performance.

著者

仲上 稔 宮 憲一

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.59, no.617, pp.710-710, 1939-12-10 (Released:2008-11-20)

著者

田澤 昌孝

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.36, no.339, pp.739-797, 1916 (Released:2008-11-20)