著者

岩本 太郎 板井 雄大 白山 幸治 永野 顕法

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.27, no.10, pp.1154-1159, 2009 (Released:2011-11-15)

参考文献数

16

被引用文献数

1 1

---

A conceptional idea of the pseudo mechanism is proposed. This concept means that a different mechanical feature from the natural one appears on the mechanism by means of control method. For example, a worm gear behaves like an one-way clutch. Generally, worm gears cannot be driven by load torque because of its mechanical stop feature. But the worm gear of this concept can be driven by load in specified direction, and the rotation to the other direction is prohibited. This asymmetrical motion is achieved by a switching operation of a force feedback control. The applied load torque is detected and fed back positively to a position servo control system in order to achieve power assist control. The worm gear seems to be driven by the load torque and it resembles to a spring motion. If the force feedback line is cut off, the drive system cannot be driven by a load. The switching operation of the force feedback line causes to a selection of back drivable feature or mechanical stop feature. The switching condition is set by a direction and threshold value according to the required mechanical feature. The pseudo mechanical worm gear also pretends as a torque limiter or a ratchet.

著者

矢口 裕明 長谷川 貴巨 長濱 虎太郎 稲葉 雅幸

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.36, no.10, pp.693-702, 2018 (Released:2019-01-15)

参考文献数

17

被引用文献数

4

---

In this paper we propse a construction method of autonomous tomato harvesting robot. For tomato harvesting we focus to harvesting device and visual recognition method. We propose 2 types of harvesting method; cutting scissor and rotational plucking gripper. For recognition, we compare different 3 types of 3D camera, then we construct tomato fruit recognition method using color detection and sphere shape fitting, and also propose tomato pedicel detection method by robust estimation using direction from center of fruit to pedicel and gradient orientation of pedicel edge. Combining these elements, we construct some autonomous harvesting systems and evaluate harvesting of real tomatoes in the tomato robot competition and the real farming veniel house. According to evaluation results, both cutting and plucking has different advantage and disadvantage, it is important to select appropriate one for breed or individual. Also for recognition, pedicel recognition, which must be broken, increases reliability harvesting.

著者

鄭 龍振 倉爪 亮 岩下 友美 長谷川 勉

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.31, no.9, pp.896-906, 2013 (Released:2013-12-15)

参考文献数

31

被引用文献数

1 3

---

We proposed a global positioning technique in 3D environment using 3D geometrical map and a RGB-D camera based on a ND (Normal Distributions) voxel matching. Firstly, a 3D geometrical map represented by point-cloud is converted to ND voxels, and eigen ellipses are extracted. Meanwhile, ND voxels are also created from a range image captured by a RGB-D camera, and eigen ellipses and seven representative points are calculated in each ND voxel. For global localization, point-plane and plane-plane correspondences are tested and an optimum global position is determined using a particle filter. Experimental results show that the proposed technique is robust for the similarity in a 3D map and converges more stably than a standard maximum likelihood method using a beam model.

著者

秋下 貞夫

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.9, no.2, pp.203, 1991-04-15 (Released:2010-08-25)

著者

溜井 美帆 山田 雅宏 渡辺 義浩 石川 正俊

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.31, no.7, pp.712-719, 2013 (Released:2013-10-01)

参考文献数

16

被引用文献数

3 1

---

In recent years, there has been an increasing demand to digitize a huge number of books. A promising new approach for meeting this demand, called Book Flipping Scanning, has been proposed. This is a new style of scanning in which all pages of a book are captured while a user continuously flips through the pages without stopping at each page. Although this new technology has had a tremendous impact in the field of book digitization, page turning is still done manually, which acts as a bottleneck in the development of high-speed book digitization. Against this background, this paper proposes a newly designed high-speed, high-precision book page turner machine. Our machine turns the pages in a contactless manner by utilizing the elastic force of the paper and an air blast. This design enables high-speed performance that is ten times faster than conventional approaches and, in addition, causes no obstruction in the digitization process. This paper reports the evaluation of the proposed machine using various types of paper with different qualities. Our machine achieved high success rate when turning pages at around 300 pages/min, showing that it is a promising technology for turning pages at high-speed and with high precision.

著者

大西 献 時岡 淳 大西 典子 弘津 健二 大道 武生 白須 勲

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.18, no.1, pp.55-56, 2000-01-15 (Released:2010-08-25)

参考文献数

15

被引用文献数

2 1

著者

米澤 浩

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.27, no.3, pp.272-273, 2009 (Released:2011-11-15)

参考文献数

4

被引用文献数

2 2

著者

川妻 伸二 淺間 一

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.34, no.8, pp.552-557, 2016 (Released:2016-11-15)

参考文献数

10

被引用文献数

1 1

---

There was not a guideline available for researchers, developers or users for robots or heavy construction machines on the evaluation of radiation tolerance and management method of robots and heavy construction machines using semiconductors, like as CPUs on the shelf, under radiation condition, when Fukushima daiichi NPPs accidents occurred on March 11th, 2011. The evaluation and the management method became necessary, in order to deploy robots like as QUINCE developing for big city accidents or unmanned heavy construction machines for landside disaster. According to “radiation tolerance data base on parts or materials” developed in 1980's to 1990's by Japan Atomic Energy Agency (JAEA), a guideline, for robots and unmanned heavy construction machines, was tentatively developed.

著者

石井 啓範

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.30, no.6, pp.582-584, 2012 (Released:2012-08-15)

参考文献数

5

被引用文献数

2 3

著者

尾形 邦裕 國吉 康夫

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.31, no.4, pp.390-400, 2013 (Released:2013-06-15)

参考文献数

27

---

Humanoid robots should be able to handle independently human bodies. In previous studies, robots manipulated human bodies using brute force, but this does not accurately reflect a human's action. Yoshinori Kouno, who has studied several skills related to physical exertion, including martial arts and nursing-care motions possesses, as the subject, we studied these motions and analyzed the techniques that were superior to other body dynamics. In this study, we focused on the pushing action of human, and aimed to understand the body's dynamics. The zero moment point (ZMP) trajectories of the actor varied around the center of gravity (COG), and the actor used the falling momentum to push the recipient's body. Kouno reported that the position of the fingers enabled him to control his arm movements. Hence we analyzed the electromyogram signals of the whole body. Analysis of the recipient's resistance based on the ZMP and COG, suggests that the recipient can predict the attack by the actor of the action and braces him/herself for the impact. Thus, the actor needs to confound the recipient's prediction to realize human pushing motions with less effort. The falling momentum strategy and change in the arm's force play an important role to in confusing the prediction. We confirm the effectiveness of these body dynamics using numerical simulation. Finally, we conclude that the “knack” of the pushing motion is due to a special pose of fingers.

著者

尾形 邦裕 國吉 康夫

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.33, no.6, pp.470-480, 2015 (Released:2015-08-15)

参考文献数

34

---

It is so difficult for many people to handle other's body. Japan's aging population, the skill of lift-up motion and transfer motion is needed in the nursing care field. Utilizing self body dynamics and understanding other's movement are important to these nursing-care motions. Yoshinori Kouno, who has studied several skills related to physical, including martial arts and nursing-care motions, as the participant, we studied these motions and analyzed the techniques that were superior to other motion skills. From measurement result of pulling-up motion, we find acceleration of center of mass increases sharply by discontinuous change of zero moment point, Kouno pulled other's body up using the instantaneous. To pull the standing other's body, Kouno uses strategy of ``falling momentum,'' and Kouno constrains the movement of his arms. Therefore, we conclude that knacks of pulling-up motion are the changing ZMP by the stepping motion and constraining the arm joints. Based on these analysis result, we construct the dynamics model and control strategies, confirmed by numerical analysis and dynamic simulation. Then, to confirm the effectiveness of these skills, we perform the validation experiments on general participants instructed with these knacks.

著者

佐藤 彰

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.34, no.2, pp.113-115, 2016 (Released:2016-04-15)

参考文献数

12

被引用文献数

1 4

著者

奥村 光平 奥 寛雅 石川 正俊

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.29, no.2, pp.201-211, 2011 (Released:2011-04-16)

参考文献数

19

被引用文献数

12 8

---

The purpose of our study is to realize an active vision capable of casting its gaze in any desired direction in ms-order. It is, however, difficult even if a vision sensor itself is controlled directly by high-speed actuators. Therefore, we propose a high-speed gaze control subsystem, called “Saccade Mirror.” Using this system and a high-speed vision, image sequences that each image has different direction of gaze in msorder has been successfully obtained. Measuring the frequency response of the gaze control, this result has exceeded the preceding study. That is to say, the utility of our proposal has been ascertained.

著者

水内 郁夫 藤本 純也 袖山 慶直 山本 邦彦 岡田 慧 稲葉 雅幸

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.30, no.9, pp.889-898, 2012 (Released:2012-12-15)

参考文献数

18

被引用文献数

7

---

We have developed a kitchen in which a robot arm with a hand is incorporated. The robot was made for assisting with our work in kitchen. Manipulation of a variety of dishes is the main problem for the purpose. For realizing the manipulation, we developed a one-DOF hand equipped with multiple sensors. In this paper, we present the robot system estimating aproximate position and shape of dishes using these sensors based on sensor-based tracing. We also present a method of manipulating dishes grasplessly to deal with difficult setting of dishes. In the following experiment, we demonstrate the robot clears away basic three types of dishes by picking them off a tray and placing them into a dish washer.

著者

高橋 隆行

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.17, no.2, pp.190-191, 1999-03-15

著者

小松原 剛志 塩見 昌裕 神田 崇行 石黒 浩 萩田 紀博

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.33, no.10, pp.789-799, 2015 (Released:2016-01-15)

参考文献数

21

被引用文献数

2 3

---

This paper reports a robot which interacts with children semi-autonomously in a science room of an elementary school to help children's understanding of science classes. The robot asked children questions related to their science classes during breaks between science classes; children could freely interact with it during experiment periods. We implemented a personal identification function to the robot by using a face recognition system with robot's camera and a human tracking system with environmental sensors. Still, speech recognition is difficult in noisy elementary school environment; therefore we decided to take over speech recognition function by the operator. In this study our result did not show significant effects of the robot existence for helping children's understanding, but we found that children who joined to the robot's quiz more than a certain time increased understanding toward a specific unit.

著者

北川 秀夫 大野 貴 三好 孝典 寺嶋 一彦

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.27, no.3, pp.343-349, 2009 (Released:2011-11-15)

参考文献数

14

被引用文献数

2 2

---

Holonomic omnidirectional mobile robot is useful with its high mobility in narrow or crowded place, and omnidirectional robot equipped with normal tires is desired for difference excess, vibration suppression and riding comfort. Caster-drive mechanism using normal tire has been developed to realize a holonomic omnidiredctional robot, however, there remains some problems. This paper presents effective systems to control the caster-drive wheels of omnidirectional mobile robot. Two kinds of Differential-Drive Steering System (DDSS) are proposed to improve the operation ratio of motors. One is using bevel pair gear and the other is using planetary gear to generate driving and steering torque effectively from two motors. Simulation results show the proposed system is effective for holonomic omnidirectional mobile robots.

著者

小川 宏人

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.34, no.10, pp.685-689, 2016 (Released:2017-01-15)

参考文献数

32

被引用文献数

1

著者

妹尾 拓 高野 光浩 石川 正俊

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.31, no.3, pp.301-309, 2013 (Released:2013-05-15)

参考文献数

16

---

In this paper, dynamic biped locomotion is considered with the goal of achieving fast and dexterous leg motion. We propose a new movement principle for legged robots, which produces propulsive force using frictional asymmetry. The dynamic locomotion consists of sliding motion based on the kinematic constraint and jumping motion which enables to keep the maximum horizontal velocity. The dynamics of the 2-DOF biped robot is analyzed to obtain motion characteristics for developing a motion strategy. Experimental results are also shown in which a 2-DOF biped robot takes fast short steps repetitively with compensation of the landing time by high-speed vision.

著者

大西 公平

出版者

一般社団法人 日本ロボット学会

雑誌

日本ロボット学会誌 (ISSN:02891824)

巻号頁・発行日

vol.11, no.4, pp.6-13, 1993-05-15

参考文献数

19

被引用文献数

153 220