著者
嶋地 直広
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.659-662, 2016 (Released:2017-01-15)
参考文献数
6
被引用文献数
1 1
著者
小野 栄一
出版者
The Robotics Society of Japan
雑誌
日本ロボット学会誌 (ISSN:02891824)
巻号頁・発行日
vol.9, no.3, pp.383-388, 1991-06-15 (Released:2010-08-25)
参考文献数
10
著者
上野 祐樹 今冨 亜樹絵 増田 光敏 松尾 芳樹
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.40, no.3, pp.231-239, 2022 (Released:2022-04-22)
参考文献数
18

A mobile robot used in homes and offices are required to be able to move around without getting stuck in an environment with various obstacles such as people and furniture, in addition, not to hurt or damage them if it strikes against them. A robot with a spherical body is an effective means to fulfill these requirements. In this study, such a spherical mobile robot that drives a spherical shell with an internal drive unit and can move in all directions is considered. The authors' have proposed a spherical mobile robot driven by an internal unit with three omni-wheels in the past studies. First, this paper describes the structure of a newly developed experimental spherical mobile robot of the proposed scheme employing three omni-wheels in a specific layout. Second, a kinematic model is derived so that the internal unit can transmit the driving force without slipping with respect to the spherical shell. Third, in order to realize vibration suppression control and velocity control of the sphere, a dynamic model and its analysis, a vibration suppression control method, and a feedback control method of the moving direction and the velocity of the sphere shell are described. The proposed model and the methods were examined using the newly developed spherical mobile robot, and these usefulness and effectiveness are confirmed from experimental results.
著者
福地 伸晃 千葉 直也 橋本 浩一
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.36, no.5, pp.368-375, 2018 (Released:2018-07-15)
参考文献数
21

Bin picking robot plays an important role in automated manufacturing in industries. One of the most important techniques of bin picking robot is object detection or pose estimation in bin scene, and recently various methods reported good performance. Some industrial parts have its 3D CAD model that can represent whole shape of those parts; hence these methods are based on comparing the model of target object with the scene measured by camera or 3D sensors. However, almost all foods handled at factory do not have fixed shape against the recent demand of automating pick and place task. Therefore model-based techniques cannot be applied. In this paper, we propose a method of object detection without its 3D CAD model by utilizing target surface area information and concavity of boundaries between respective individuals. We evaluate proposed method against some foods and show the effectiveness of the method.
著者
神田 崇行 石黒 浩 石田 亨
出版者
The Robotics Society of Japan
雑誌
日本ロボット学会誌 (ISSN:02891824)
巻号頁・発行日
vol.19, no.3, pp.362-371, 2001-04-15 (Released:2010-08-10)
参考文献数
17
被引用文献数
19 31

For realizing robots working in human society, interaction between people and robots is one of the important issues. We have developed a robot that behaves based on visual information and interacts with people. The robot controls its gazing direction for representing the internal states. By using the robot, we have evaluated impressions given by the robot based on psychological methods. SD method and factor analysis have been applied to evaluate the impressions. As a result of the experiments, impressions of the robot principally consisted of 4 factors: familiality, enjoyment, activity, and performance evaluation, and these have been effected by computer skills of subjects. In addition, we have verified that gazing direction control promotes interactions between people and the robot.
著者
小島 航 和田 正義
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.40, no.6, pp.550-553, 2022 (Released:2022-07-20)
参考文献数
4

In this study, we evaluated the effect of the parameter of interest on the dynamic characteristics of the electric wheelchair thorough the automatic running experiment excluding the influence of human maneuvering and the mathematical stability analysis with the aim of investigating the cause of the low straightness of the front-drive electric wheelchair. Furthermore, from the experimental results, it was clarified that it is possible to effectively improve the straightness of the front-wheel drive wheelchair by using a control method that cancels the influence of centrifugal force.
著者
武田 賢成 橘 完太
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.40, no.6, pp.519-527, 2022 (Released:2022-07-20)
参考文献数
20

Currently, autonomous driving on sailing vehicles attracting attentions. In our previous study, a set of control rules was proposed to reach the windward target point using the position information obtained at intervals of several seconds for a sailing vehicle on the water, which is more difficult to stop and steer than on land and is more likely to sway leeward. In this study, in addition to this previous study, we conduct and analyze actual experiments using two methods that apply an obstacle avoidance method proposed previously on land to sailing vehicle on the water. Method 1 aims at the middle direction between the avoidance direction and the target point direction, and Method 2 steers in the direction opposite to the obstacle. We conducted actual experiments of obstacle avoidance using a sailing robot. We confirmed that obstacle avoidance was possible with either of the two proposed methods, and we clarified the characteristics of the methods by analysis. In the experiments, the wind blew almost orthogonal to the two-point reciprocating course with the midpoint as the obstacle, so the obstacle and the target point were located upwind from the direction of travel in all three times of meet with the obstacle. In this situation, Method 1 steered upwind to soften the Leeway effect and prevent the path from bulging downwind. In Method 2, the time to avoid obstacles was shortened by turning the rudder in the leeward direction.
著者
堀江 竜太 金子 真
出版者
The Robotics Society of Japan
雑誌
日本ロボット学会誌 (ISSN:02891824)
巻号頁・発行日
vol.21, no.8, pp.940-946, 2003-11-15 (Released:2010-08-25)
参考文献数
17
被引用文献数
2 4

This paper proposes a tactile sensor capable of automatically adjusting its sensitivity, depending upon the contact information. Suppose a strain gauge based sensor, such as multi-axis force sensor and tactile sensor. One big issue for those sensors is the signal saturation due to large input for a particular direction. The proposed sensor system can automatically avoid such a situation with combination of Automatic Gain Control (AGC) . The sensor is composed of a controller and an analyzer. The analyzer provides with the contact force and the controller tunes up the amplitude of each frequency. We discuss the basic design relue where two theorems are introduced for guaranteeing the working principle of the sensor with AGC. Experimental results are also shown for validating the basic idea of the proposed sensor.
著者
小菅 一弘 川俣 裕行 福田 敏男 小塚 敏紀 水野 智夫
出版者
The Robotics Society of Japan
雑誌
日本ロボット学会誌 (ISSN:02891824)
巻号頁・発行日
vol.11, no.6, pp.849-855, 1993-09-15 (Released:2010-08-25)
参考文献数
17
被引用文献数
3 6

This paper proposes a method to calculate the forward kinematics of a Stewart Plaftorm type of parallel link manipulators. The Stewart Platform consists of a base platform, a moving platform, and linear actuators connecting the both platforms. First we introduce a virtual parallel link mechanism, having the same kinematic structure as the original parallel mechanism. We assume that the moving platform of the virtual mechanism is directly driven by actuators and the limbs connecting both platforms have no actuators. A trajectory tracking control system is designed for this virtual mechanism based on the resolved motion rate control, so that the displacements of limbs are controlled by the actuators driving the moving platform. We calculate the forward kinematics by numerical simulation of the control system ; the position and orientation of the moving platform of the virtual mechanism is a solution for given displacements of limbs, when the tracking error of limbs converges to zero. The method is effective for a time varying displacements of limbs as long as the displacements are differentiable about time. The position and orientation of the moving platform is obtained without error, once the tracking error converges to zero. The simulation results illustrate the method.
著者
川崎 宏治 趙 漠居 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.33, no.4, pp.285-291, 2015 (Released:2015-06-15)
参考文献数
12
被引用文献数
1

In our research, we focus on the information collection in multi-field by aerial vehicle. We develop hardware mechanism generating more efficient lift power to achieve the ability to tilt with continuous and infinite rotation and keep arbitrary tile angle while flying. In this work, we propose a new mechanism for aerial robot including four propellers separated to two mutually connected bi-copter modules. We call this new aerial robot Bi2Copter. With the proposed mechanism, we are able to realize take-off, landing and flight under vertical orientation of body, leading to the feasibility of image capture with full 360° spherical coverage as well as exploration and measurement parallel to the target surface of which curvature changes continuously. This paper presents the motivation to this new aerial robot, the design of proposed mechanism and flight control accompanied with experiment results.