電気学会論文誌C(電子・情報・システム部門誌)
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
137 巻, 11 号
選択された号の論文の16件中1~16を表示しています
特集:電気関係学会関西連合大会
特集論文
<情報通信工学>
  • 西川 久, 山口 裕之, 西橋 毅, 田中 亜実, 道関 隆国
    2017 年 137 巻 11 号 p. 1435-1442
    発行日: 2017/11/01
    公開日: 2017/11/01
    ジャーナル フリー

    This paper presents a method of wireless-power transmission to devices which move from close distance to far area from transmitting antenna. UHF range, specifically 430 MHz, was selected in this study so that both of the near-field and the electro-magnetic energy would exist in the applicable distance and the rectenna would be small enough. The resulting hardware is compact and light enough to be installed on a moving target with only minor sacrifices in size and weight. As a demonstration of this concept, a rectenna and two driving motors were embedded in each of the four rotors of a quadcopter. The rotor assembly (rotor, antenna, rectifier, two motors) is powered by UHF waves and rotates around a mechanically fixed shaft. Successful test flights of the quadcopter demonstrate the feasibility of wireless power transmission to mobile targets.

特集研究開発レター
<システム・計測・制御>
論文
<情報通信工学>
<生体医工学・福祉工学>
  • 島田 尊正, 深見 忠典, 今野 紀子, 宮保 憲治
    2017 年 137 巻 11 号 p. 1472-1478
    発行日: 2017/11/01
    公開日: 2017/11/01
    ジャーナル フリー

    Pictures of four kinds of filled shapes (circle, equilateral triangle, square and regular pentagon) colored by red, green, blue and corresponding grays were prepared. As a typical brain-computer interface (BCI) paradigm using P300, pictures were presented in an oddball paradigm. Target stimulus was selected from four filled shapes of specific color and non-target stimuli were the other filled shapes of the same color. Twelve experiments (twice for each color) were implemented. Subjects counted whenever targets were detected. For each color, the P300 peak amplitude for target minus that for non-target which relate to signal-to noise ratio (S/N) were calculated. S/N for red and blue were larger than those for the corresponding grays. Correct rates of BCI calculated by the statistical method for red, green and blue were higher than those for the corresponding grays. Peak latency for red was shorter than that for the corresponding gray. These results showed the probability of improvement of noise proof property, correct rate and rapidity of BCI by using effects of colors.

<システム・計測・制御>
  • 西村 典大, 福山 良和, 松井 哲郎
    2017 年 137 巻 11 号 p. 1479-1487
    発行日: 2017/11/01
    公開日: 2017/11/01
    ジャーナル フリー

    This paper proposes dependable parallel differential evolutionary particle swarm optimization (DEEPSO) for on-line optimal operational planning of energy plants. The planning can be formulated as a mixed integer nonlinear optimization problem (MINLP). When optimal operational planning of numbers of energy plants are calculated simultaneously in a data center, it is required to generate optimal operational planning as rapidly as possible considering control intervals and numbers of treated plants. One of the solutions for this challenge is speed-up by parallel and distributed processing (PDP). However, PDP utilizes numbers of processes and countermeasures for various faults of the processes should be considered. On-line optimal operational planning requires successive calculation at every control interval for keeping customer services. Therefore, sustainable (dependable) calculation keeping quality of solutions are required even if some of the calculation results cannot be returned from distributed processes. Using the proposed dependable parallel DEEPSO based method, calculation time becomes about 3 times faster than that by a sequential calculation, and high quality of solutions can be kept even with high fault probabilities.

<音声画像処理・認識>
<情報システム,エレクトロニック・コマース>
<情報処理・ソフトウェア>
研究開発レター
<電気回路・電子回路>
部門記事
 
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