Tetsushi Kamegawa

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Reinforcement learning is very effec#ive for robot learning. Because it does not need prior knowledge and has higher capability of reactive and adaptive behaviors. In our previous works, we proposed new reinforce learning algorithm: "Q-learning with Dynamic Structuring of Exploration Space Based on Genetic Algorithm (QDSEGA)". It is designed for complicated(More)
To search victims in the narrow space at the disaster site, we have developed the snake-like rescue robot called "KOHGA". The robot is constructed by connecting multiple crawler vehicles serially by active joints. KOHGA has a problem that obstacles are caught to the joints and then the robot is stuck. To solve this problem, we developed an unit assembled(More)
A snake robot would be applied to a machine that goes into a narrow space to investigate the inside of a structure. Recently, multiple locomotion modes of snake robots have been realized. In the previous study, we also achieved some kind of locomotion modes such as undulatory locomotion mode, sidewinding locomotion mode, lateral rolling locomotion mode and(More)
Robots are useful for search and detection missions for trapped victims after disasters due to their abilities enter places where human rescuers cannot go without risking their own lives. We have experienced and found much knowledge about rescue robots while participating in the RoboCup Rescue Competitions. In this paper we introduce examples of "effective(More)
In this paper, EARLI (Extended Asymmetrical Reverse Lateral Inhibition) is proposed for the snake robot's obstacle aided locomotion and behavior. The idea of EARLI starts with an original idea of lateral inhibition; although joints rotate in reverse direction compared with the original lateral inhibition; and information of contact affects not only adjacent(More)
Recently, multiple locomotion gaits of snake have been realized by snake robots. However, previous locomotion gaits are mainly limited on two-dimensional plane. In this study, we make a snake robot that can move in three-dimensional space by connecting several units serially. The each unit is composed by assembling one pitch axis and one yaw axis, and it(More)