Search results for: Keigo Watanabe

Items from 1 to 20 out of 196 results

article

Defect detection method using deep convolutional neural network, support vector machine and template matching techniques

Fusaomi Nagata, Kenta Tokuno, Kazuki Mitarai, Akimasa Otsuka, more

Artificial Life and Robotics > 2019 > 24 > 4 > 512-519

In this paper, a defect detection method using deep convolutional neural network (DCNN), support vector machine (SVM) and template matching techniques is introduced. First, a DCNN for visual inspection is designed and trained using a large number of images to inspect undesirable defects such as crack, burr, protrusion, chipping, spot and fracture phenomena which appear in the manufacturing process...

article

An improvement of flight performance in the level flight of tilted quadrotors by attaching a fixed-wing

Yoshikazu Nakamura, Atsushi Arakawa, Keigo Watanabe, Isaku Nagai

Artificial Life and Robotics > 2019 > 24 > 3 > 396-403

Wide range information is required to be collected by unmanned aerial vehicles (UAVs) and the area for its take-off and landing is limited in the event of a disaster. Therefore, research on the development of a specific UAV, which has two functions of a long distance flight like a fixed-wing aircraft and of a hovering like a rotorcraft, is drawing attention recently. In this study, we focus on a hybrid...

article

Iterative curved surface fitting algorithm using a raster-scanning window

Fusaomi Nagata, Akimasa Otsuka, Takeshi Ikeda, Hiroaki Ochi, more

Artificial Life and Robotics > 2018 > 23 > 3 > 359-366

In this paper, an iterative curved surface fitting method using a small sliding window is first proposed to smooth the original organized point cloud data (PCD) with noise and fluctuation. Samples included in a small sliding window positioned in PCD are successively fitted to a quadratic surface from upper left to lower right using a least squares method. In the iterative process, outliers of samples...

article

Mission planning of iOS application for a quadrotor UAV

Zeming Lu, Fusaomi Nagata, Keigo Watanabe

Artificial Life and Robotics > 2018 > 23 > 3 > 428-433

Development of civilian UAV (unmanned aerial vehicle) applications has become possible with the progress of electronics and information technologies. In addition, smartphones have rapidly gained popularity and become very important due to the simple operability and mobility. Under such a background, there is a need to have an easy and flexible way to control a UAV using such a smartphone. The authors...

article

Development of post-processor approach for an industrial robot FANUC R2000iC

Fusaomi Nagata, Yusaku Yamane, Yudai Okada, Takamasa Kusano, more

Artificial Life and Robotics > 2018 > 23 > 2 > 186-191

In this paper, a post-processor for the industrial robot FANUC R2000iC is introduced. Without going through the conventional teaching process, the post-processor regularly generates a rigorous robotic program from cutter location source data called CLS data. The CLS data are easily made through the main process of CAD/CAM, so that a promising data interface is realized between the industrial robot...

article

Machining robot with vibrational motion and 3D printer-like data interface

Fusaomi Nagata, Keigo Watanabe, Maki K. Habib

International Journal of Automation and Computing > 2018 > 15 > 1 > 1-12

In this paper, a vibration motion control is proposed and implemented on a foamed polystyrene machining robot to suppress the generation of undesirable cusp marks, and the basic performance of the controller is verified through machining experiments of foamed polystyrene. Then, a 3 dimensional (3D) printer-like data interface is proposed for the machining robot. The 3D data interface enables to control...

chapter

An improved method for the kinodynamic motion controller in a two-wheeled drive mobile robot

Kimiko Motonaka, Keigo Watanabe, Shoichi Maeyama

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society > 6247 - 6251

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

A robot with two independent driving wheels is used popularly as a service robot. Therefore, there is a lot of research on the autonomous locomotion. The robot with two independent driving wheels has a nonholonomic constraint in its model, so that it needs a specific control method when controlling it. In this research, we use an invariant manifold for solving such a nonholonomic constraint. The controller...

chapter

Curved surface fitting method using a raster-scanning window and its application to stereolithography-based reverse engineering

Fusaomi Nagata, Norifumi Horie, Hiroaki Ochi, Keigo Watanabe, more

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society > 6258 - 6263

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

In this paper, a curved surface fitting method using a raster-scanning window is proposed to smooth the original organized point cloud data (PCD) and extract the original features in the presence of noise. The method allows PCD to be smoothed while keeping its own original features. Then, a Stereolithography (STL) generator is proposed to produce triangulated patches from smoothed PCD, and this helps...

chapter

Attitude control of a camera mounted-type tethered quadrotor for infrastructure inspection

Keigo Watanabe, Nao Moritoki, Isaku Nagai

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society > 6252 - 6257

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

Use of unmanned aerial vehicles is considered as one of the means which performs infrastructure inspection. Since the operation from GPS or the outside is not needed but the method by a quadrotor with a tether can perform the position control of the airframe, it can be used for the inspection of infrastructures, such as a tunnel and a bridge. In this research, it aims to develop and control a camera...

chapter

Acquisition of optical flow considering the pitching motion to estimate the self-position of a manta robot

Masaki Ikeda, Kota Mikuriya, Keigo Watanabe, Isaku Nagai

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE) > 182 - 185

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE)

The development of underwater exploration robots is expected for the biological research of aquatic life. In particular, biomimetic robots are possible to investigate aquatic organisms without affecting them seriously. A Manta robot has been already developed by mimicking the pectoral fin of the manta ray. Note however that it is difficult to obtain the self-position data, because small AUVs like...

chapter

Curved surface fitting using a raster-scanning window for smoothing PCD

Fusaomi Nagata, Norifumi Horie, Keigo Watanabe, Maki K. Habib

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE) > 172 - 175

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE)

Although point cloud data (PCD) are easily measured using a RGB-Depth sensor such as Kinect and Xtion, measured PCD have undesirable noise and fluctuation of values. In this paper, a curved surface fitting method using a raster-scanning window is proposed to smooth original organized PCD with noise. The method allows PCD to be fitted to numerous small quadratic curved surfaces and to be smoothed while...

chapter

Flight simulations of kinodynamic control using the information around a quadrotor

Kimiko Motonaka, Keigo Watanabe, Shoichi Maeyama

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE) > 176 - 179

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE)

The autonomous control of the quadrotor has received attention. In the previous research, we proposed the kinodynamic control using a harmonic potential field (HPF), which is a method to design a control input by considering kinematic constraints and dynamic constraints simultaneously. However, it was assumed that the environment was already known and the HPF of the environment was prepared in advance...

chapter

Improvements of one-wheel driven personal mobility for use on a public road

Takanori Sakata, Isaku Nagai, Keigo Watanabe

2017 IEEE International Conference on Mechatronics and Automation (ICMA) > 525 - 530

2017 IEEE International Conference on Mechatronics and Automation (ICMA)

As a daily means of transportation, Personal Mobility (PM) attracts attention due to its high environmental performance. One of the representative PMs is Segway. However, it is expensive and unavailable to use freely on a Japanese public road because of Road Traffic Act. Therefore, our laboratory developed a one-wheel driven and standing ride type PM for the purpose of low production cost and using...

chapter

Design and development of steered active wheel casters and its application

Yutaro Ueno, Keigo Watanabe, Isaku Nagai

2017 IEEE International Conference on Mechatronics and Automation (ICMA) > 507 - 512

2017 IEEE International Conference on Mechatronics and Automation (ICMA)

Recently, omnidirectional powered-wheelchairs that have high mobility at a narrow space or a place with many obstacles are studied actively. Many of conventional omnidirectional mechanisms use special wheel mechanisms, such as a mecanum wheel etc. However, this mechanism is unsuitable for use in powered-wheelchairs, because of having problems, such as serious vibrations while moving, low loadability,...

chapter

Post processor for industrial robots — Circular arc interpolation of CLS data to generate FANUC robotic program —

Fusaomi Nagata, Yudai Okada, Akimasa Otsuka, Takeshi Ikeda, more

2017 IEEE International Conference on Mechatronics and Automation (ICMA) > 519 - 524

2017 IEEE International Conference on Mechatronics and Automation (ICMA)

In this paper, a post processor for an industrial robot FANUC R2000iC is introduced. Without conventional teaching process, the post processor regularly generates a robotic program written in LS format from cutter location source data called CLS data. The CLS data supporting “GOTO” and “CIRCLE” statements for linear and curved motions are easily made through the main process of CAD/CAM, so that a...

chapter

Development of iOS application handlers for quadrotor UAV remote control and monitoring

Zeming Lu, Fusaomi Nagata, Keigo Watanabe

2017 IEEE International Conference on Mechatronics and Automation (ICMA) > 513 - 518

2017 IEEE International Conference on Mechatronics and Automation (ICMA)

With the progress of electronics technology, the development of civilian UAV (Unmanned Aerial Vehicle) applications becomes possible. Also, smartphones have rapidly gained popularity and become very important due to the simple operability and mobility. Hence, there is a need to have an easy and flexible way to control a UAV by using such technology. In this paper, a remote control and monitoring system...

chapter

Development and control of tilt-wings for a tilt-type Quadrotor

Ryuta Takeuchi, Keigo Watanabe, Isaku Nagai

2017 IEEE International Conference on Mechatronics and Automation (ICMA) > 501 - 506

2017 IEEE International Conference on Mechatronics and Automation (ICMA)

The application of unmanned aerial vehicles (UAVs) is being actively studied as one of ways for collecting of information and supporting of rescue activities etc., under a catastrophic disaster. There are roughly two types of UAVs: one is rotorcraft type UAVs that have ability for vertical takeoff and landing (VTOL) and the other is fixed-wing type UAVs that are superior in terms of flying-range and...

chapter

A detection method using ultrasonic sensors for avoiding a wall collision of Quadrotors

Kenjiro Niwa, Keigo Watanabe, Isaku Nagai

2017 IEEE International Conference on Mechatronics and Automation (ICMA) > 1438 - 1443

2017 IEEE International Conference on Mechatronics and Automation (ICMA)

Unmanned aerial vehicles (UAVs) can be applied as an inspection method for infrastructures such as tunnels, bridges, etc. In particular, UAVs being capable of vertical takeoff and landing (VTOL) are suitable for photographing inspection sites using cameras, because it need not use a runway and can hover. Among such VTOL type UAVs, those having four rotors are called Quadrotors. When using a Quadrotor...

article

iOS application for quadrotor remote control

Zeming Lu, Fusaomi Nagata, Keigo Watanabe, Maki K. Habib

Artificial Life and Robotics > 2017 > 22 > 3 > 374-379

With the progress of electronics technology, the development of civilian UAV (unmanned aerial vehicle) applications becomes possible. In addition, smartphones have rapidly gained popularity and become very important due to the simple operability and mobility. Hence, there is a need to have an easy and flexible way to control a UAV using such technology. In this study, a remote controller using an...

article

Influence on the propulsive performance due to the difference in the fin shape of a robotic manta

Masaaki Ikeda, Kota Mikuriya, Keigo Watanabe, Shigeki Hikasa, more

Artificial Life and Robotics > 2017 > 22 > 2 > 276-282

This paper experimentally investigates the influence on the propulsive performance by the difference in the fin shape of a robotic manta. Five kinds of fin shapes, i.e., a rectangle, a triangle, a trapezoid, and two right triangles, are used in experiment to measure the forward speed of the robot, where two types of right triangle are discriminated, depending on the arrangement of the right angle...

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Keywords

ROBOT KINEMATICS (21)
MOBILE ROBOTS (14)
ROBOT SENSING SYSTEMS (13)
CAMERAS (11)
CAD/CAM (10)
FORCE CONTROL (8)
FUZZY REASONING (8)
ROBOTS (8)
FORCE (7)
FUZZY CONTROL (7)
INDUSTRIAL ROBOT (7)
LEGGED LOCOMOTION (7)
QUADROTOR (7)
SERVICE ROBOTS (7)
TRAJECTORY (7)
ATTITUDE CONTROL (6)
COMPUTER AIDED MANUFACTURING (6)
ROBOT VISION SYSTEMS (6)
CUTTER LOCATION DATA (5)
DESIGN AUTOMATION (5)
MACHINING ROBOT (5)
MANTA ROBOT (5)
MOBILE ROBOT (5)
NONHOLONOMIC MOBILE ROBOT (5)
NONLINEAR CONTROL (5)
OMNIDIRECTIONAL MOBILE ROBOT (5)
STABILITY (5)
SWITCHES (5)
SWITCHING CONTROL (5)
WHEELS (5)
CL DATA (4)
INVARIANT MANIFOLD (4)
NEURAL NETWORK (4)
NEURAL NETWORKS (4)
NEURONS (4)
NONHOLONOMIC SYSTEMS (4)
OBSTACLE AVOIDANCE (4)
POSITION CONTROL (4)
REVERSE ENGINEERING (4)
SIMULTANEOUS LOCALIZATION AND MAPPING (4)
SMOOTHING METHODS (4)
STICK-SLIP MOTION (4)
THREE-DIMENSIONAL DISPLAYS (4)
VEHICLES (4)
AUV (3)
CENTRAL PATTERN GENERATOR (3)
CLEANING ROBOT (3)
CLS DATA (3)
COLLISION AVOIDANCE (3)
EMOTION (3)
FEATURE EXTRACTION (3)
FUZZY LINGUISTIC INFORMATION (3)
GENERATORS (3)
GENETIC ALGORITHM (3)
GRAVITY (3)
HUMANS (3)
JOINTS (3)
KINEMATIC MODEL (3)
KINEMATICS (3)
MACHINING (3)
MANIFOLDS (3)
MANIPULATORS (3)
MOTION CONTROL (3)
NONHOLONOMIC MOBILE ROBOTS (3)
PD CONTROL (3)
PLANNING (3)
POSITION MEASUREMENT (3)
TIP-OVER (3)
TRAJECTORY TRACKING (3)
UNDERACTUATED CONTROL (3)
UNDERACTUATED MANIPULATORS (3)
VELOCITY CONTROL (3)
YTTRIUM (3)
ACTIVE DUAL-WHEEL CASTER (2)
ACTIVE VISION (2)
ACTOR-CRITIC ALGORITHMS (2)
ADAPTIVE CONTROL (2)
ARTIFICIAL NEURAL NETWORKS (2)
ASYMPTOTIC STABILITY (2)
BATTERIES (2)
BENEVOLENT AGENT (2)
BUOYANCY (2)
CLEANING (2)
CLIMBING ROBOT (2)
COLLEAGUE ROBOT (2)
COMPLIANT MOTION (2)
COMPUTER VISION (2)
CONTROL (2)
DATA ASSOCIATION (2)
DC MOTORS (2)
DESKTOP NC MACHINE TOOL (2)
DISTRIBUTED JOB (2)
DYNAMICAL MODEL (2)
EDUCATION (2)
EVOLUTIONARY COMPUTATION (2)
EVOLUTIONARY LEARNING (2)
EXPECTATION (2)
FACE (2)
FEEDBACK (2)
FIRE TRUCK ROBOT (2)
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Artificial Life and Robotics (44)
Journal of Intelligent & Robotic Systems (9)
Neural Computing and Applications (3)
Robotics and Computer Integrated Manufacturing (3)
Soft Computing (3)
International Journal of Automation and Computing (2)
Mechatronics (2)
Procedia Engineering (2)
Applied Soft Computing (1)
Autonomous Robots (1)
Chemistry – A European Journal (1)
IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics) (1)
IEE Proceedings D - Control Theory and Applications (1)
Information Sciences (1)
Journal of Control, Automation and Electrical Systems (1)
Journal of Manufacturing Systems (1)
Journal of the American Chemical Society (1)
Neurocomputing (1)
Tetrahedron Letters (1)
The International Journal of Advanced Manufacturing Technology (1)
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INFONA - science communication portal

Search results for: Keigo Watanabe

Defect detection method using deep convolutional neural network, support vector machine and template matching techniques

An improvement of flight performance in the level flight of tilted quadrotors by attaching a fixed-wing

Iterative curved surface fitting algorithm using a raster-scanning window

Mission planning of iOS application for a quadrotor UAV

Development of post-processor approach for an industrial robot FANUC R2000iC

Machining robot with vibrational motion and 3D printer-like data interface

An improved method for the kinodynamic motion controller in a two-wheeled drive mobile robot

Curved surface fitting method using a raster-scanning window and its application to stereolithography-based reverse engineering

Attitude control of a camera mounted-type tethered quadrotor for infrastructure inspection

Acquisition of optical flow considering the pitching motion to estimate the self-position of a manta robot

Curved surface fitting using a raster-scanning window for smoothing PCD

Flight simulations of kinodynamic control using the information around a quadrotor

Improvements of one-wheel driven personal mobility for use on a public road

Design and development of steered active wheel casters and its application

Post processor for industrial robots — Circular arc interpolation of CLS data to generate FANUC robotic program —

Development of iOS application handlers for quadrotor UAV remote control and monitoring

Development and control of tilt-wings for a tilt-type Quadrotor

A detection method using ultrasonic sensors for avoiding a wall collision of Quadrotors

iOS application for quadrotor remote control

Influence on the propulsive performance due to the difference in the fin shape of a robotic manta

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