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Robotics technology brings innovation for agriculture industry. In order to solve the grain issue and the labor force issue in the world, the smart agriculture is an important approach at present and in the future. In this paper, a new path planning method based on wind direction is proposed for agricultural unmanned boat which is susceptible to the effect of wind. This method could be utilized in...
We have been working on high power joint mechanism which is expected to improve robot functionality and the activities in various working environment. In general, the performance of joint mechanisms depends on actuators performance, and the power mass ratio of actuators is almost constant in the same type motors. Locusts whose length is about 50mm have powerful hind-leg to jump five times high (about...
One of important subjects for mobile robots is the vision based decision-making system with environmental recognition. In order to extract features from obtained images, how to realize color constancy by adjusting color property is the important technical issue. We have been working on color constancy vision algorithms using bio-inspired information processing methods as self-organizing map (SOM),...
In this paper an embedded computer based autonomous robot for pipe inspection is presented. Robot propulsion mechanism and power system and its protection system are designed. To avoid of getting stuck in pipe a new emergency release mechanism proposed. The practical field tests show that the robot performs well and can do pipe inspection properly and the robot moves gracefully not only at straight...
In this paper, we describe the concept, design and implementation of a series of autonomous mobile soccer robots, named ldquoMusashirdquo robot, which have safety design which is based on ISO and a mechatronics modular architecture, to participate in the RoboCup middle-size league. In modularity design methodology, we show that the selection of a proper moving mechanism, a suitable vision system and...
This paper investigates a communication model which explains what behaviors make humans think that they share information with a robot. We focus on the motion of a robotpsilas gaze which is synchronized with a humanpsilas gesture and a gaze direction, and propose a communication model for a robot to share real world information with a human. We have conducted a psychological experiment and reveals...
Recently, various mechanisms have been developed combining linkage mechanisms and wheels, especially, the combination of passive linkage mechanisms and small wheels is one of main research trends, because standard wheel type mobile mechanisms have difficulties on rough terrain movements. In our research, a 6-wheeled mobile robot employing a passive linkage mechanism has been developed to enhance maneuverability...
We show the dynamics computation employing Jacobian that relates the center of gravity (COG) to joints of link mechanisms, in this paper. COG Jacobian is used for the behavior planning and the control of humanoids. And, it usually expresses the relationship between the joints and COG of a robotpsilas whole body. However, in this scheme, itpsilas calculated regarding each link and not the robotpsilas...
A wheeled mobile mechanism with a passive and/or active linkage mechanism for rough terrain environment is developed and evaluated. In our previous research, we developed a switching controller system for wheeled mobile robots in rough terrain. This system consists of two sub-systems: an environment recognition system using self-organizing map (SOM) and an adjustable control system using neural network...
This paper proposes a new communication model based on synchronized behaviors. If people talk about real world information, they use non-verbal expressions to draw otherpsilas attention to the target. To achieve the reference to the information, we focus on behaviors which occur simultaneously. The simultaneous behaviors are the evidence that both humans share the same context in interaction. We employ...
Various kinds of robots have been developed parallel with the progress of computers and information processing technology, and the operations in the extreme environments, such as disaster areas, space and ocean, are getting one of the practical solutions for those hazardous missions. The underwater robots are one of the extreme environment robots and expected as one of solutions for underwater activities,...
Autonomous underwater vehicles (AUVs) have great advantages for activities in deep oceans, and are expected as the attractive tool for near future underwater development or investigation. However, AUVs have various problems which should be solved for motion control, acquisition of sensors' information, behavioral decision, navigation without collision, self-localization and so on. In order to realize...
Autonomous underwater vehicles (AUVs) are attractive tools to survey Earth science and oceanography, however, there exists a lot of problems to be solved such as motion control, acquisition of sensor data, decision-making, navigation without collision, self-localization and so on. In order to realize useful and practical robots, underwater vehicles should take their action by judging the changing...
Echo state networks (ESNs) use a recurrent artificial neural network as a reservoir. Finding a good one depends on choosing the right parameters for the generation of the reservoir, intuition and luck. The method proposed in this article eliminates the need for the tuning by hand by replacing it with a double evolutionary computation. First a broad search to find the right parameters, which generate...
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