著者
梯 百合子 伊沢 多聞 白井 琢磨 中西 雄飛 岡田 慧 稲葉 雅幸
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.2011, pp."2P2-Q10(1)"-"2P2-Q10(4)", 2011-05-26

Many types of humanoid robots have been developed, but it is hard to find one with supple spine structure. To act in a proper manner with natural, human-like motions, we believe that humanoid robots should have and use their spines effectively. To find out how to use the spine flexibly and elegantly, we focused on dancing, the art of beautiful movements. Dancing demands you to develop flexible and well coordinated movements of the torso, so we decided to pick up a movement of the sort and realize it by a robot, in order to understand the basics of dancing. This paper describes a way of realizing hula hooping by an exclusive hula-hooping robot as the first step toward dancing humanoids.
著者
小黒 芳男
出版者
一般社団法人日本機械学会
雑誌
日本機械学会論文集 C編 (ISSN:03875024)
巻号頁・発行日
vol.51, no.464, pp.p893-900, 1985-04

5名の男子被験者に運搬物の重量の違う7通りの歩行を伴う肩かつぎ形運搬作業を行わせ,歩幅,遊脚時間および歩行速度について,運搬物の重量の違いとの関係を明らかにした.一般的には,運搬物の重量が増せば,1歩当たりの歩幅は短かくなり,歩行速度も遅くなる.また,1歩当たりの遊脚時間値は相対的に影響を受け難いが,同一歩行距離に対する歩行数は,1歩当たりの歩幅が短かくなった分だけ多くなるので所要時間値は増加する.
著者
池井 寧 山崎 一夫 古賀 章浩 森川 恒 福田 収一
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.60, no.579, pp.3618-3624, 1994-11-25

The present paper describes a new design of a fluid driven microactuator which comprises a planar piston, a four-way control valve, and a mechanical feedback system that controls the output in accordance with an input displacement. Fabrication processes of the microactuator include bulk micromachining of two sheets of silicon substrate and their assembly by electrostatic bonding to glass plates. The output characteristics were measured supplying the compressed air. Generated output force was partially linear to supplied pressure and to valve displacement. However, the magnitude was asymmetric in terms of driven directions, which results from geometrical configuration essentially introduced by an anisotropic etching of the silicon. The position of the output shaft was sufficiently controlled with a designed magnification factor multiplied to the input displacement in both static and dynamic senses.
著者
関谷 壮 斉藤 渥 山田 重雄
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 (ISSN:00290270)
巻号頁・発行日
vol.19, no.83, pp.17-23, 1953-07-20

Expressing the distribution of load, on a circular plate with a hole at the center under a concentrated load, by means of δ-function, and performing the integral of particular solution by the property of δ-function, we reduced the differential equation for the bending of the plate to a plane biharmonic equation. Expressing the solution of this biharmonic equation and boundary conditions by Fourier series and comparing the coefficients of both sides of the equations, we derived the exact solution of the deflection for the following cases ; (i) Both boundaries are clamped, (ii) One boundary is clamped and the other is free supported, (iii) Both boundaries are free supported, (iv) One boundary is clamped and the other is a free edge, (v) One boundary is free supported and the other is a free edge.
著者
相良 慎一 壇上 孝博 田村 正和
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.2002, 2002

著者らは, これまでにベースにアクチュエータを搭載した水平駆動式の浮遊型2リンク水中ロボットマニピュレータに対して, 動力学モデルの導出および制御系の構成を行い, 計算機シミュレーションによりそれら有効性を確認している。ここでは, ベースにスラスタを有する水平駆動式の浮遊型2リンク水中ロボットマニピュレータを試作し, 分解加速度制御系を構成して手先位置およびベース位置・姿勢の制御実験を行い, 構成した制御系の有効性を示す。
著者
野島 武敏
出版者
一般社団法人日本機械学会
雑誌
日本機械学会論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.66, no.647, pp.2463-2469, 2000-07-25
参考文献数
8
被引用文献数
9 3

The aim of this paper is to invent foldable (or developable) conical shells in their axial direction. Foldable conical shells with several different types of folding patterns have newly been designed by geometrical considerations with the help of Origami concept. By using thin polypropylane sheet as well as papers, the designed conical shells with prescribed folding lines were actually manufactured, and it was verified that the shells are fully folded as expected. The designed models will make it possible to construct foldable/developable structures such as tents and dome-roof or to manufacture new types of industrial products.
著者
江上 登 加賀谷 忠治 井上 宣之 竹下 弘秋 水谷 肇
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. A編 (ISSN:03875008)
巻号頁・発行日
vol.66, no.650, pp.1936-1942, 2000-10-25
被引用文献数
12 21 7

This study examines the effect of hybrid surface modification by vacuum carburizing and fine particle peening on fatigue strength behaviors of SCM 415 material. We used quenched vacuum carburized and hybrid, vacuum carburized and fine particle peened, specimen made of SCM 415 and measured their hardness distribution, mechanical properties, fatigue strength and crack propagation. In terms of the fatigue behaviors, we investigated the relationship between the crack propagation rate da/dN and stress intensity factor range △K, da/dN and effective stress intensity factor range △K_eff, as well as the fatigue crack initiation life N_i and crack failure life N_f of specimens. The results show specimens with hybird surface modification are effective in the prevention of fatigue crack initiation and fatigue crack propagation.
著者
中島 正博 アハマド モハメド リズワン 申 亞京 小嶋 勝 本間 道夫 福田 敏男
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.2010, pp."2P1-A30(1)"-"2P1-A30(3)", 2010

In this paper, the novel evaluation of local stiffness distribution for biological organism is presented using comb-nanoprobes. The local stiffness values are important to reveal and evaluate the cell condition depending on health, diagnosis, growth phase, and so on. We have been developed the nanorobotic manipulation system inside an Environmental-Scanning Electron Microscope (E-SEM). The deformation of the biological organism can be observed by E-SEM with real-time imaging. In this paper, the local stiffness distribution of Caenorhabditis elegans (C. elegans) is evaluated using comb-nanoprobes. We fabricated the comb-type silicon nanoprobes to measure the local stiffness distribution in each C. elegans. We also test the viability of C. elegans inside E-SEM from the motion of C. elegans before and after setting inside the E-SEM.
著者
前田 太佳夫 鎌田 泰成 藤岡 秀康 鈴木 潤
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 : JSME annual meeting
巻号頁・発行日
vol.2007, no.2, pp.357-358, 2007-09-07

In the actual wind turbine operated in the field, the wind direction changes with time. So, the turbine is operated with yaw miss alignment in most of time. To grasp the flow around wind turbine is important for evaluating the rotor performance. This paper shows the results of the velocity field measurement around a horizontal axis wind turbine in case various yawed operation. The experiments are carried out in a wind tunnel with 2.4m-diameter test rotor with 2-dimensional laser Doppler velocimeter. In the measurements the power curve and velocity distribution are measured for each yaw angle. Increasing of yaw angle, the power coefficient of the rotor decreases. The flow around turbine under yawed condition expands as non-yaw operation, but the flow pattern is not asymmetry with rotational axis. There is a large low-speed wake area in downstream of the blade placed upward. And flow around the blade placed downward has a large radial velocity component.