著者
鈴木 智 田原 誠 中澤 大輔 野波 健蔵
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.26, no.6, pp.626-634, 2008-09-15 (Released:2010-08-25)
参考文献数
14
被引用文献数
11 16

In this paper, we propose the attitude estimation algorithm under the dynamic acceleration environment. Generally, an attitude sensor has biaxial or triaxial accelerometer in order to measure the direction of gravity. In this configration, the attitude sensor has serious error under the dynamic acceleration environment, because of the measurement error of gravity that is caused by the dynamic acceleration. When we put the attitude sensor on a movable body like an UAV (Unmanned Aerial Vehicle), this kind of error is fatal for the sensor. So, we apply the extended kalman filter algorithm to reduce the estimation error. Firstly, we derive the process model for the kalman filter which is based on quaternion kinematics. Secondly, we design the extended kalman filter by using the process model. Lastly, we show the simulation and experiment result of the estimation algorithm.
著者
柴田 智広
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.14, no.3, pp.335-336, 1996-04-15 (Released:2010-08-25)
参考文献数
1
被引用文献数
1 1
著者
高玉 圭樹 中谷 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.21, no.5, pp.488-493, 2003-07-15 (Released:2010-08-25)
参考文献数
13
被引用文献数
1 1
著者
但馬 竜介 菅 敬介
出版者
The Robotics Society of Japan
雑誌
日本ロボット学会誌 = Journal of Robotics Society of Japan (ISSN:02891824)
巻号頁・発行日
vol.25, no.6, pp.860-866, 2007-09-15
参考文献数
15
被引用文献数
3 2

In the present paper, we introduce a new method by which to generate motions having flight phases such as jumping or running. Such motions are expected to expand the speed and stability of legged robots. Motions with flight phases are examined with respect to jumping, stability and implementation. A novel method of determining the Center of Mass (COM) and foot locations is proposed that is independent of the target robot actuators or assignments of joints. Moreover, the proposed method allows an on-line system to be built easily and is useful for actual robots. A one-legged jumping robot having a toe joint is built in order to demonstrate the feasibility of this method. Using the toe joint of the robot, the proposed method can reduce the angular velocities of the joints remarkably. Experiments are conducted to investigate the control of the direction, velocity and turning of the robot.

2 0 0 0 OA 脳の運動学習

著者
川人 光男
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.1, pp.11-19, 1995-01-15 (Released:2010-08-25)
参考文献数
27
被引用文献数
3 6
著者
小俣 透
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.2, pp.217-224, 2001-03-15 (Released:2010-08-25)
参考文献数
11

This paper analyzes the motion of a multi-limbed robot in contact with other objects or the ground at multiple points. A limb is defined as a serial link mechanism, such as an arm, a leg, a finger. The motion of the robot is restricted if the multiple contact points are held stationary. In general there are singular postures at which the motion of the robot has an additional degree of freedom. Contact at multiple points also causes the restriction on their sliding directions when they slide. This paper proves that when the robot is at the singular posture, the sliding directions are more restricted. We also show that the closer the robot approaches the singular posture, the more difficult the contact points slide in the directions infeasible at the singular posture. Sliding analysis is important not only for sliding control but also position and force controls of the limbs. We developed a quadruped robot which can take various postures, e.g. lying on the ground and standing on the knees. The motion of the quadruped robot is analyzed as an example of a multi-limbed robot in multi-point contact.
著者
黒田 洋司
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.5, pp.477-479, 2003-07-15 (Released:2010-08-25)
被引用文献数
1 2
著者
松島 俊明 金森 克洋 大照 完
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.3, no.4, pp.354-361, 1985-08-15 (Released:2010-08-25)
参考文献数
10
被引用文献数
1 4

早稲田大学のプロジェクトチームは, 楽譜を読み, 10本の指と両足で電子オルガンを演奏する知能ロボットWABOT-2を開発した.このロボットは, 人間と人工の声で会話することができる.この論文では, 楽譜のデータ構造に基づいた高速の専用ハードウエアによる検出と, 楽譜の知識を利用したアルゴリズムを用いて, 印刷楽譜だけでなく, インスタント・レタリング楽譜も約15秒で認識できる本ロボットの視覚システムについて報告する.印刷楽譜の自動認識については, すでに幾つかの報告があるが, ロボット肩上に設置されたカメラで, 譜面台上に無造作に置かれて湾曲・変形した楽譜を実時間で読み取らなければならないという演奏ロボットの目として十分に使用できるシステムはない.視覚系の出力はロボットの手に直接渡されるため, 演奏不能な不正データの出力は許されない.したがって本システムでは楽曲規則および楽譜のもつ冗長性を利用して, 識別結果の矛盾と不協和音の検査をすると共に, その誤り訂正および補間を行い, 音楽的により正しい認識結果を得ている.3パートからなる童謡程度の市販エレクトーン楽譜1枚について, 処理速度15秒以内, 認識率ほぼ100%の結果を得ており, 実時間演奏ロボットの視覚系としての機能を充分達成することができた.
著者
山本 喜多男
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.6, pp.780-783, 1995-09-15 (Released:2010-08-25)
参考文献数
3
著者
藤井 亮暢 石黒 章夫 Peter Eggenberger Hotz
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.4, pp.478-484, 2004-05-15 (Released:2010-08-25)
参考文献数
19
被引用文献数
1 1

In order to create agile locomotion for legged robots, so far various methods have been proposed with the concept of neural circuits, or so-called Central Pattern Generator (CPG) . In contrast to these approaches in which monolithic CPG neural circuits are employed to control locomotion, this paper focus on a polymorphic CPG neural circuit. This allows us to dynamically change the properties of CPG circuit according to the current situation in real-time. To this aim, the concept of neuromodulation mechanism is introduced to modulate a CPG circuit. To verify the feasibility of this approach, this concept is applied to the control of a 3-D biped robot which is intrinsically unstable. In order to explore the parameters of the CPG circuit with a neuromodulation mechanism, an evolutionary algorithm is employed in this study. Simulation results show that the neuromodulation mechanism dynamically changes synaptic weights of the CPG circuit. This synaptic change leads to creating different behaviors, such as walking behavior and stepping behavior, from the same circuit.
著者
開 一夫
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.17, no.1, pp.11-15, 1999-01-15 (Released:2010-08-10)
参考文献数
16
著者
矢野 雅文
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.10, no.4, pp.468-473, 1992-08-15 (Released:2010-08-10)
参考文献数
3
被引用文献数
1
著者
井出 英人 内田 雅文 横山 修一
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.12, no.5, pp.28-32, 1994-07-15
被引用文献数
6 1

In this investigation, we studied the utilty of electric or mechanical stimuli as visual substitutes. We used mechanical and electric stimuli to present characters and colors respectively. For the reduction of learning time and the increase of recognition rate, we devised an apparatus which is connected to a microcomputer and can present Japanese sentences, including Chinese characters, with a 10 × 10 array of 100 vibrators.Color recognition is achieved by using electrical stimuli. Electric stimuli were given with two Ag-AgCl electrodes attached to the root of middle finger. Long pulse (feels warm) stands for red, short pulse (feels cold) stands for blue and a sequence of 10 pulses per second (feels like twitter) stands for green. The current value was 200 μA.<BR>In this investigation, we examined 25 subjects. The recognition rate was 100% for most three color (red, blue and green) .