著者
山根 章生 武信 誠一 井上 大輔 吉田 誠一 小崎 昌義 藤本 洋介 伊与田 健敏 崔 龍雲 久保田 譲 渡辺 一弘
出版者
一般社団法人日本機械学会
雑誌
ロボティクス・メカトロニクス講演会講演概要集
巻号頁・発行日
vol.2003, pp.65-66, 2003

汎用超音波トランスデューサは, その周波数特性より中心周波数40kHzより±5kHzで約20dBの減衰が生じる。これらの送受信器特性を考慮し, スペクトル拡散音波の信号伝搬特性を実験より求め, 拡散要素である設定について検討を行う。
著者
小柳 玲乃 仰木 裕嗣
出版者
一般社団法人日本機械学会
雑誌
ジョイント・シンポジウム講演論文集 : スポーツ工学シンポジウム : シンポジウム:ヒューマン・ダイナミックス : symposium on sports engineering : symposium on human dynamics
巻号頁・発行日
vol.2009, pp.401-404, 2009-12-02

The purpose of this research is to estimate the angular velocity and direction of the rotational axis of the flying disc by a tri-axial accelerometer. A subject performed throwing by using the flying disc attached the accelerometer. The closed up release and catching point images were acquired using the high speed cameras. The angular velocity was estimated from the centrifugal and angular acceleration. Estimated angular velocity was compared to the calculated angular velocity by the high speed cameras. The angular velocity estimated by both the accelerometer and the high speed cameras were quite similar.
著者
河村 隆 山藤 和男 小林 剛
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.57, no.544, pp.3895-3900, 1991-12-25
被引用文献数
4

The authors developed a 3D moving robot 'ROBOT CAT' which could control its posture in the air and could perform soft landing. This paper describes the control method of the ROBOT CAT and the experimental results. An animal cat can control its body by turning motion when released upside down from a high place. In order to realize this turning motion, the ROBOT CAT was consisted in two parts (anterior and posterior body) connected with a flexible backbone which has two degrees of freedom of motion. The backbone proposed in this paper operates on two pairs of artificial rubber muscles driven by compressed air. It is possible that this motion is applied to the posture control of astronauts and space structures.
著者
米津 啓子 佐々木 博幸 長尾 剛司 中尾 潤一 西原 雄次 正木 伸城 黒木 聖司
出版者
一般社団法人日本機械学会
雑誌
年次大会講演論文集
巻号頁・発行日
vol.2003, pp.353-354, 2003

This paper reports about CubeSat that is developing at SokuUniversity. Shooting the photos of earth and transmission of our song to ground station are the main mission. The operating frequency is in the amateur communication band. A UHF (f=430MHz) band will be used for the downlink, and a VHF (f=144MHz) will be used for the uplink. We've already developed TNC (Terminal Node Controller) for downlink at ARLISS2002. Feature of the Soka University Satellite is using FPGA (Field Programmable Gate Array) for control equipments. Advantages of using FPGA are design flexibility, small size, high speed processing and flight proven. You can have almost any logics in FPGA. Also you can have CPU in FPGA. There are reasons why we selected it for our CubeSat.
著者
緒方 正則 下間 頼一 塩津 宣子
出版者
一般社団法人日本機械学会
雑誌
公開研究会・講演会技術と社会の関連を巡って : 技術史から経営戦略まで : 講演論文集
巻号頁・発行日
vol.2006, pp.51-54, 2006-12-01

Authors assumed that the origin of the standard gauge of the railway is in the interval of wheel tracks of ancient carriages such as war chariots, two-wheeled carts and four-wheeled wagons. Basing on the assumption, authors have measured the interval of wheel track at ancient ruins and ancient highway of the Eurasian Continent and the African Continent for long years. On the other hand, the oldest vehicle that exists in the world is chariot of Tut-ankh-Amen who was the Pharaoh of ancient Egyptian of the 18th New Dynasty before 3,500 years and another two chariots of the former dynasty. Authors visited at the Egyptian Museum in Cairo for four times till now and observed six chariots in detail that were displayed inside the glass case. Considering findings of the interval of wheel tracks, authors report the specifications of Tut-ankh-Amen's chariots in this paper.
著者
松平 精
出版者
一般社団法人日本機械学会
雑誌
日本機械学会誌 (ISSN:00214728)
巻号頁・発行日
vol.77, no.667, pp.624-627, 1974-06
被引用文献数
2
著者
濱島 京子 柿倉 正義
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.63, no.607, pp.967-974, 1997-03-25
被引用文献数
14

Research on labor saving and automation of housework by robots is proceeding rapidly due to the increasing population of aged persons and improved electronics in houses. The special problems concerning housework robots are the enormous complexity of the working environment and huge number and variety of objects in a house. Therefore the recognition function of the robot is desired to be highly independent of the working environment. Moreover, the robot should be able to treat various kinds of "nonsolid-form objects" in a house. The object of this research is to develop the technology by which a robot can handle nonsolid-form objects, particularly clothes. The final goal of the research is the creation of a housekeeping robot which can put unarranged clothes into order at a specified place. Some of the concrete subtasks of this job are taking out one form of clothes and expanding, classifying, folding and putting it in the specified place. In this paper we propose a planning strategy for the task of the unfolding clothes.
著者
野島 武敏
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.67, no.657, pp.1669-1674, 2001-05-25
被引用文献数
6 1

This paper describes the folding/wrapping methods of thin flat circular membranes by using folding patterns prescribed by combining two groups of equiangular spirals. By using both folding conditions at nodes and continuous conditions of equiangular spiral type folding lines in the membranes, 2 kinds of folding patterns have been analytically designed ; (1)folding patterns consisting of pseudo equiangular spiral (zigzag type spiral) and equiangular spirals, and (2) folding patterns consisting of two groups of equiangular spirals. The availability of present folding/warpping methods of thin circular membranes has been verified by manufacturing paper and very thin metal sheet samples.
著者
鈴木 孝 柿 賢一 高橋 豊弘 中西 正義
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.74, no.746, pp.2403-2410, 2008-10-25
参考文献数
22

Hitachi Aero Plane Co. former Tokyo Gas Electric Industry Co. (Gas-Den), who also predecessor of Hino Motors, Ltd. developed an unique radial 22 cylinder aero-engine "HA51" by order of imperial army at the time of later period of the World War II. Although the engine could not be applied to test flight due to the end of the war, it has some advanced design features. For searching the design and the philosophy of this engine, brief history of the Gas-Den aero-engines was described in first part on this paper. That includes Japanese first own designed unique Shimpu (or Jimpuu) in 1928, Tempu (or Amakaze) and also Military Tank engine and others. The "HA51" engine was compared with "Homare" one of the Japanese high power engine and American P & W R2800. Unfortunately, some hypothesizes have to made on the engine, because it was missing at the war's end.
著者
土屋 喜一
出版者
一般社団法人日本機械学会
雑誌
日本機械学會誌 (ISSN:00214728)
巻号頁・発行日
vol.90, no.818, pp.10-11, 1987-01-05
被引用文献数
1
著者
佐藤 貴英 八重樫 和之 鈴木 翔太 渡辺 裕喜 平井 明礼 加納 剛史 石黒 章夫
出版者
一般社団法人日本機械学会
雑誌
ロボティクス・メカトロニクス講演会講演概要集
巻号頁・発行日
vol.2012, pp."2A1-K03(1)"-"2A1-K03(3)", 2012-05-27

Autonomous decentralized control is a key concept for building robots capable of exhibiting adaptive behavior under unpredictable real world constraints. However, it is still unclear how to generate non-trivial macroscopic functionalities of an entire system using only locally available information. In this study, we focus on the slithering locomotion of snake-like robot as a case study, and show an answer to this problem based on variational principle and reaction-diffution equation.