Vibration suppression control of a head suspension system for a quadruped robot 4족 보행 로봇의 머리모듈 현가장치의 진동저감제어

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The high degree of freedom in leg systems enables quadruped robots to provide superior mobility and gait robustness. Therefore, quadruped robots are regarded as a new means of transportation over rough terrain. One of the most promising applications of quadruped robots may be precise surveillance in military and disaster environments. For this purpose, the vibration of the robot body, which is unavoidable due to the repeated ground contact, should be suppressed. This paper proposes a vibration suppression control algorithm for the head suspension system of a quadruped robot. Using inertial measurement units (IMUs), the vertical velocity of the end point of the head suspension system is estimated with high reliability. The head suspension system is controlled to regulate the absolute vertical velocity of the end point of the head suspension system, i.e., a camera. The proposed absolute velocity estimation method is verified using an external camera and encoder. Finally, the vibration suppression control algorithm is verified with a quadruped robot called the Cheetaroid-I Carrier.
Publisher
Institute of Control, Robotics and Systems journal@ijcas.com
Issue Date
2018-01
Language
Korean
Citation

Journal of Institute of Control, Robotics and Systems, v.24, no.1, pp.71 - 79

ISSN
1976-5622
DOI
10.5302/J.ICROS.2018.17.0170
URI
http://hdl.handle.net/10203/250026
Appears in Collection
ME-Journal Papers(저널논문)
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