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JRM Vol.6 No.5 pp. 434-439
doi: 10.20965/jrm.1994.p0434
(1994)

Paper:

Posture Detection and Landing Control of Robot Thrown in Midair

Kazuo Yamafuji, Koutaro Honda and Tsuyoshi Kobayashi

Department of Mechanical and Control Engineering, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu, Tokyo, 182 Japan

Received:
July 20, 1994
Accepted:
September 24, 1994
Published:
October 20, 1994
Keywords:
Robotics, Posture detection, Rate gyrosensor, Euler angles, Landing control, Multiarticulated twin legs, Mechatronics
Abstract
In the previous papers, the authors investigated a robotic cat which could restore its attitude during free fall by twisting and controlling its body. The principle of the twisting motion was then elucidated: the robotic cat could rotate its body by 180 degrees turn within 0.6 seconds when released from an upside-down position. In this paper, 3D midair attitude detection and landing control of a newly developed robot with multi-articulated twin legs were studied. A postural detection method using the Enter angles generated by the 3D attitude angles detected by three rate gyrosensors mounted on the robot was proposed, and a landing control method for the twin legs using 4 pairs of antagonists composed of artificial rubber muscles was described. Experiments conducted with this robot reveal that the attitude of the robot thrown in an arbitrary direction could be detected and the legs could be successfully controlled to turn towards the ground for landing.
Cite this article as:
K. Yamafuji, K. Honda, and T. Kobayashi, “Posture Detection and Landing Control of Robot Thrown in Midair,” J. Robot. Mechatron., Vol.6 No.5, pp. 434-439, 1994.
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