著者
高木 健
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.36, no.9, pp.605-608, 2018 (Released:2018-12-15)
参考文献数
4
被引用文献数
1
著者
荒井 祐介 若林 憲一 吉川 雅英 奥 寛雅 石川 正俊
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.31, no.10, pp.1028-1035, 2013 (Released:2014-01-15)
参考文献数
16
被引用文献数
1 1

Recently, flagella and cilia have gathered attension since their important role in mammal cells and relation to genetic diseases of human were revealed. Chlamydomonas is one of the model organism of flagella and phototaxis research. The purpose of our research is to track a freely swimming individual Chlamydomonas cell to observe its flagella and whole body movement with dark field microscopy to investigate the phototactic reaction of Chlamydomonas. In this paper, a method for three-dimensional tracking of Chlamydomonas using high-speed visual feedback in dark field microscopy is proposed. The method was implemented to an existing microscope tracking system. It demonstrated successful three-dimensional tracking of a swimimng Chlamydomonas for several tens of seconds. The precisions of the 3D position measurement were estimated as ±1[μm] (XY) and ±10[μm] (Z).
著者
八木 秀明 星野 智史
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.39, no.3, pp.275-278, 2021 (Released:2021-04-28)
参考文献数
7

For autonomous mobile robot navigation, localization is a fundamental technique. For this purpose, environmental maps are usually given beforehand by using SLAM. In stead of SLAM, we use an existing geographical map. Since road and building information are already included in the map, we focus on the scan data of the actual road surface and buildings in the environment obtained from a 3D LiDAR. In the map, MCL technique enables a robot to estimate the position. In the experiments, we show that the robot is able to autonomously move more stably through the localization with not only the scan data of the road surface, but also the ones of the buildings.
著者
赤間 一太 谷口 友美 玄 相昊
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.39, no.4, pp.375-378, 2021 (Released:2021-05-25)
参考文献数
12

Water-hydraulic system is environmentally friendly technology, and its application to robot manipulators is eagerly awaited. However, they are still expensive compared to oil-hydraulic systems because of the technical problems related to fast sliding motions between the solid materials contacting each other with the very small gap in the pumps or valves. To avoid these difficulties, we proposed an alternative solution, which lead to a pump-less hydraulic system called AHSB. The system utilizes an air-hydraulic booster to control the low-to-middle range water pressure by pneumatic servo valves. In this paper, we analyze the water-hydraulic dynamics and develop a robust pressure-based joint torque controller using Sliding Mode Control. The controller is implemented on a single-axis robot arm for the remote torque control application, which is crucially important for future tele-operated field robots. The experiments under quasi-static condition demonstrates the first successful torque control results on the water-driven robot with 10 kg payload, which is connected with 20 meter-long hydraulic hoses.
著者
金岡 克弥 川村 貞夫
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.22, no.6, pp.732-737, 2004-09-15 (Released:2010-08-25)
参考文献数
18
被引用文献数
3