著者

中岡 慎一郎

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.226-231, 2013 (Released:2013-05-15)

参考文献数

14

被引用文献数

2 3

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

株式会社安川電機 九州電力株式会社

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.15, no.1, pp.47-48, 1997-01-15 (Released:2010-08-10)

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.

著者

本橋 優俊 久保田 孝

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.5, pp.441-444, 2022 (Released:2022-06-18)

参考文献数

11

---

This paper presents a method to select behavior modes autonomously for a planetary rover. In the conventional methods, the behavior modes of a rover are selected by operators. Once the environment changes, however, it takes a long time to drive to the destination, because the intervention by operators is needed. Therefore, autonomous behavior mode selection is required to improve the exploration efficiency. The key idea of the proposed method is to understand the environmental map by deep learning so that a rover can select appropriate behavior mode according to the environment. The simulation study has been conducted to show the validity of the proposed method. The proposed method successfully demonstrates the capability to select behavior modes and to improve the traverse efficiency.

著者

妻木 俊道 玉田 守

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.35, no.6, pp.486-493, 2017 (Released:2017-08-15)

参考文献数

14

---

We introduce the stable walking system for the large 6 legged walking machine. The machine was developed to realize a solid and reliable walking vehicle for practical uses in forestry steep terrain with spread mechanical elements those are used in usual construction machines. It weighs about 4,000[kg] including the working machine. Owing to a mounted diesel engine and hydraulic drive system, it can walk around on the soft soil terrain and climb the steep slope of inclination up to about 30 degrees, and walk along contour line of lateral inclination up to about 41 degrees. Finally it walked well, despite it was tested on severe steep terrain where a lot of shrubs and stumps exist. We tested and evaluated the machine mainly about its significant walking method, hydraulic motion control system for walking and real-time inclination correcting system.

著者

村上 俊之 中村 亮 郁 方銘 大西 公平

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.5, pp.765-768, 1993-07-15 (Released:2010-08-25)

参考文献数

6

被引用文献数

21 68

---

The paper describes a force sensorless control in multi-degrees-of-fredom robot. In the active com-pliant control, force sensor is attached to the robot to detect the reaction force. However it makes a structure of the robot system complicated. To improve this problem, we propose the force sensorless control strategy based on disturbance observer.First, a basic structure of the dusturbance observer is shown. Then the calculation process of the reaction force is also introduced. Second, the force sensorless compliant controller is constructed. The experimental results are also shown to confirm the validity of the proposed method.

著者

岸波 華彦 糸山 克寿 西田 健次 中臺 一博

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.40, no.4, pp.351-354, 2022 (Released:2022-05-20)

参考文献数

12

---

This paper addresses reconstruction of visual scenes based on echolocation, aiming to develop auditory scene understanding for robots and systems. Although scene understanding technology with a camera and a LIDAR has been studied well, it is prone to changes in lighting conditions and has difficulty in detecting invisible materials. Ultrasonic sensors are widely used, but their use is limited to distance estimation. There is an unavoidable risk of ultrasonic exposure since most ultrasonic power exists in inaudible frequency ranges. To solve these problems, we propose a framework for echolocation-based scene reconstruction (ELSR). ELSR can reconstruct a visual scene using the transmitted/received audible sound, and it exploits a Generative Adversarial Network (GAN) to learn translation from input sound to a visual scene. As GAN is originally designed for image input, we carefully considered the difference between image and sound input and propose introducing cross-correlation and trigonometric function-based features to input audio features. The proposed framework is implemented based on pix2pix, a kind of conditional GAN, and a dataset for ELSR consisting of 10,800 pairs of input sound and depth images recorded at 28 indoor locations was newly created. Experimental results using the dataset showed the effectiveness of the proposed framework ELSR and audio features.

著者

森岡 一幸 李 周浩 橋本 秀紀

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.22, no.1, pp.103-111, 2004-01-15 (Released:2010-08-25)

参考文献数

17

被引用文献数

5 5

---

In the environment that human and robots coexist, mobile robots have to approach human as much as possible in order to provide human with physical services. For friendly interaction with human, the robots should be able to afford human-affinitive movement. In this paper, human following, as one of human-affinitive movements, of robot is achieved. The human following robot requires several techniques; the recognition of the target human, the recognition of the environment around the robot, and the control strategy for stable human following. In this research, Intelligent Space, where many sensors and intelligent devices are distributed, is used for the recognition of the target human and the environment around the robot. The control law based on the virtual spring model is proposed to mitigate the difference of movement between the human and the mobile robot. The proposed control law is applied to Intelligent Space and its performance is verified by computer simulation and experiment.

著者

村上 陽一郎

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.16, no.1, pp.6-7, 1998-01-15 (Released:2010-08-25)

被引用文献数

2

著者

市川 誠

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.13, no.2, pp.213-218, 1995-03-15 (Released:2010-08-25)

参考文献数

6

著者

鄭 育昌

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.191-194, 2022 (Released:2022-04-22)

参考文献数

10

著者

田中 宏和

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.35, no.7, pp.500-505, 2017 (Released:2017-10-01)

参考文献数

17

著者

木本 充彦 飯尾 尊優 塩見 昌裕 タネヴ イヴァン 下原 勝憲 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.35, no.9, pp.681-692, 2017 (Released:2017-12-15)

参考文献数

24

被引用文献数

2 1

---

This paper proposes a multimodal interactive approach to improving recognition performance of objects a person indicates to a robot. We considered two phenomena in human-human and human-robot interaction to design the approach: alignment and alignment inhibition. Alignment is a phenomenon that people tend to use the same words or gestures as their interlocutor uses; alignment inhibition is an opposite phenomenon, which people tend to decrease the amount of information in their words and gestures when their interlocutor uses excess information. Based on the phenomena, we designed robotic behavior policies that a robot should use enough information without being excessive to identify objects so that people would use similar information with the robot to refer to those objects, which would contribute to improve recognition performance. To verify our design, we developed a robotic system to recognize the objects to which people referred and conducted an experiment in which we manipulated the redundancy of information used in the confirmation behavior. The results showed that proposed approach improved recognition performance of objects to which referred by people.

著者

星 義克 三平 満司 古賀 雅伸

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.18, no.8, pp.1133-1140, 2000-11-15 (Released:2010-08-25)

参考文献数

13

被引用文献数

5 4

---

In this paper, we discuss an autonomous locomotion control of a snake-like robot which is modeled by some links with passive wheels. When the robot locomotes windingly, it should always keep the high locomotable shape, because its locomotability depends on its own shape. Then, we utilized a notion of manipulability to evaluate the locomotability, and proposed a controller to make it autonomously locomote in a desired direction without decreasing the manipulability. In this method, the robot spontaneously generates its gait, so we don't need to design any gaits. Moreover, by some simulations, it was proved that the method realizes the autonomous locomotion without taking singular postures.

著者

西村 陽樹

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.2, pp.117-120, 2022 (Released:2022-03-17)

参考文献数

12

著者

玉本 拓巳 佐山 和宏 小金澤 鋼一

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.33, no.9, pp.689-695, 2015 (Released:2015-12-15)

参考文献数

9

---

This paper proposes a multi-joint-gripper that achieves envelope grasping for unknown shape objects. The proposed mechanism is based on a chain of Differential Gear Systems (DGS) controlled by only one motor. It also equips a Variable Stiffness Mechanism (VSM) that controls joint stiffness to relieve interferences suffered from external environment and to achieve a dexterous grasping. The experiments elucidated that the developed gripper achieves envelop grasping; the posture of the gripper automatically fits the shape of the object with no sensory feedback. And they also showed that the VSM effectively works to relieve external interferences. This paper shows the mechanism and experimental results of the second test machine that was developed inheriting the idea of DGS used in the first test machine but has a completely altered VSM.