著者
松野 文俊 神澤 貴雄
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.5, pp.789-794, 1997-07-15
被引用文献数
1

In this paper, stability analysis and robust control of a force-controlled arm having a rigid tip body, of which the mass centerr lies on the central axis of the arm. We consider link flexibility as uncertainty and derive dynamic equations of the force-controlled arm. As the obtained boundary condition is nonhomogeneous, we introduce a change of variables to derive homogeneous boundary conditions. On the basis of a finite-dimensional modal model of distributed-parameter systems, stability of the force feedback is analyzed by using the root locus technique, and an optimal controller with low-pass property as a robust controller is constructed. Simulations have been carried out.
著者
唐 立新 油田 信一
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.21, no.8, pp.883-892, 2003-11-15
被引用文献数
7 2

This paper presents a method of mobile robot's autonomous navigation in indoor environments by a teaching and playing-back scheme using memories of an ounri-directional image sequence and robot's motion. The robot memorizes a sequence of environmental images and robot's poses during a teaching stage. And in the course of a playing-back stage. itt calculates the robot's position difference from the memorized and currently taken images, and then decides a trajectory to track the taught route, so that it can navigate autonomously to follow the given path to the destination. An omni-directional image sensor is used, and vertical edges arc extracted as feature lines in the environment for calculation of robot's position difference. The experimental results show the effectiveness of this method in corridors of bulidings.
著者
上川 健司 新井 健生 前 泰志 田窪 朋仁 井上 健司
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.28, no.2, pp.231-240, 2010 (Released:2012-01-25)
参考文献数
16
被引用文献数
1 3

This paper proposes a new locomotion algorithm of narrow scaffold. We have developed a limb-mechanism robot. The limb can move on a large working area, it can be used as an arm and a leg. ASTERISK Robot system has six limbs that radiate out in six directions. This robot system has the rotational symmetry, therefore, the posture is equivalent even if the robot body rotates. By using this feature, we propose a new movement algorithm “rotational gait” that the robot rotates like a wheel. The rotational gait can be applied to the robot that hanging on a cable, moving on narrow shelf of a cliff, and walking in a narrow space by the same algorithm. The operation and effectiveness of these algorithms were verified by the experiment. The movement algorithm is easy pattern operation that keeps stable state at all periods. And the robot can move without doing a high-speed real-time processing.
著者
稲垣 克彦 小林 尚登
出版者
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.13, no.8, pp.1122-1129, 1995-11-15 (Released:2010-08-10)
参考文献数
9

Autonomous walking machines are generally required in dangerous situation in which humankind cannot step. Thus, walking machines have to return to the base position by themselves, even if a leg is injured by some accidents. In such a case, hexapod walking machine has advantages, because it can keep walking by remained five legs. This paper proposes a new gait rule named injury-adaptive wave gait. The new gait is available for not only normal hexapod walking, but also injured hexapod walking. Additionally, to apply the new gait rule smoothly, we propose a new control strategy for leg motion control. The strategy uses a notion of distributed control to realize synchronized motion among six legs. By combination of the gait rule and the control strategy, walking machine can realize suitable gait for its walking condition.
著者
岡田 昌史 茂木 祐一 山本 江
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.32, no.1, pp.45-54, 2014 (Released:2014-02-15)
参考文献数
13

In this paper, we develop a model of the behavior of visitors in an exhibition space, and design an amenity space to reduce congestion. Because the flow of visitors depends on the space layout, it is possible to reduce the congestion by changing the layout of exhibits. To deal with the congestion, a macro model of visitors is required. The flow of visitors is modeled by two-dimensional vector field and the individual behavior is represented by the dynamic model including collision avoidance of individuals. To model walking and stopping behaviors, we introduce an extended dimensional space where the extra coordinate represents the viewing time of each exhibition. The parameters in the proposed model are identified from the measured data of human flow line. To reduce the congestion, the layout of exhibits is optimized based on the proposed model by minimizing the collision avoidance vector. The proposed method is verified by simulations and experiments using swarm robots, which consist of autonomous mobile robots and radio controlled robots.
著者
山崎 将史 竹内 栄二朗 大野 和則 田所 諭
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.8, pp.702-709, 2011 (Released:2011-11-15)
参考文献数
13
被引用文献数
5 4

This paper describes method to improve the accuracy of localization of mobile robot using GPS with particle filter. This method improves the accuracy of localization by removing multipath of GPS measurement data with 3D-Map. This approach analyzes area that cannot receive direct wave from GPS satellite with 3D-Map about each satellite. The particles in that area are assumed to be receiving GPS data including the multipath error. And particle's likelihood is calculated considering the multipath error. This method is useful for localization and navigation of mobile robot between buildings.
著者
中村 庸郎 川嶋 稔夫 青木 由直
出版者
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.8, no.2, pp.152-159, 1990-04-15 (Released:2010-08-25)
参考文献数
15
被引用文献数
2

To realize intelligent robot, it is necessary to establish an effective method for visual and tactile recognition. Much of the existing work on tactile recognition has assumed that tactile sensors derive only data on object surfaces so as to generalize recognition algorithm. With tactile sensors which provide local features of contact areas, e. g, vertex, edge, etc., it is possible to prune inconsistent interpretations more effectively than existing methods.This paper proposes a method for object identification using local feature sensors. In the method, interpretations at each step of identification process are represented as a set of subsets of 3-D space where a sensor to be located. With the progress of identification process, the set will be narrower. Consequently local constraints become strict and inconsistent interpretations will be efficiently pruned. In the pruning, local constraints are compared considering the error bounds of measurement in sensor data.
著者
福井 類 勝代 雅行 森下 広 森 武俊 佐藤 知正
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.28, no.7, pp.841-852, 2010 (Released:2012-01-25)
参考文献数
32
被引用文献数
1 1

This paper proposes a system configuration method to realize a robot system which can perform daily-use object storage and management service in a living space. In the method, compliant mechanisms are utilized proactively to overcome position/posture errors and deviations in measurement or control phases. To validate the proposed system configuration method, we developed a home-use container transfer robot that is installed with (1) robust container handling mechanisms implemented by crank shafts and (2) passive compliant mechanisms for horizontal and inclination misalignment. The robot was integrated with a container position measurement system to perform experiments. Experiments confirmed that a robust container transfer motion can be realized without complex feedback measurement and control processes. Several key design points are also described to leverage mechanical compliance.
著者
稲邑 哲也 中村 仁彦 戸嶋 巌樹 江崎 英明
出版者
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.22, no.2, pp.256-263, 2004-03-15 (Released:2010-08-25)
参考文献数
22
被引用文献数
10 15

During the behavior imitation, human being doesn't practice simple coordinates transformation, but acknowledge the others' behavior, understands the behavior after abstraction into symbol information, and generates one's self behavior. A framework “Mimesis” in cognitive science and “mirror neuron” found in biology field show that the behavior generation process isn't independent of behavior cognition process, but generation and cognition process have close relationship each other. Focusing on these facts, we propose a new method which carry out the behavior cognition process and behavior generation process at the sanie time, and co-evolve these two processes using the proto-symbol and mimesis framework. We also propose a mathematical model based on Hidden Markov Models in order to integrate the behavior cognition and generation process, which has an advantage that the model have three functions; 1) behavior memorization, 2) behavior recognition, and 3) self behavior generation, by itself. Finally, feasibility of this method is shown through experiment in a humanoid simulator.
著者
長谷川 勉 坂根 茂幸 佐藤 知正
出版者
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.1, pp.112-121, 1991-02-15 (Released:2010-08-25)
参考文献数
31
被引用文献数
9