Predictive control of stable standing of three-legged robot

The stability margin of multi-legged robots will be significantly reduced on changing ground, such as the ground of an earthquake or the deck of a surface ship. In this paper, a new type of three-legged robot prototype is taken as the research object. Aiming at the stable standing of the three-legge...

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Main Authors: Li, Kunling, Chen, Caihong, Yuan, Xuexi, He, Yonglu, Tao, Kezhu, Gao, Weiying
Format: Conference Proceeding
Language:English
Subjects:
Knee
Legged locomotion
predictive control
Robot kinematics
Stability criteria
stable standing
Three-legged robot
Trajectory
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Chen, Caihong
Yuan, Xuexi
He, Yonglu
Tao, Kezhu
Gao, Weiying
description The stability margin of multi-legged robots will be significantly reduced on changing ground, such as the ground of an earthquake or the deck of a surface ship. In this paper, a new type of three-legged robot prototype is taken as the research object. Aiming at the stable standing of the three-legged robot under different terrains, this paper proposes a predictive control method for online planning reference trajectories. Through the angle data obtained by the gyroscope, the ground condition of the robot is evaluated online, and the reference trajectory is generated in real time. In this paper, the predictive control method is used to control the virtual leg elongation length to track the reference trajectory so that the robot body is parallel to the horizontal plane. The simulation and prototype experiments prove that the three-legged robot can obtain high stability on the changing ground by this algorithm.
doi_str_mv 10.1109/CAC48633.2019.8997353
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subjects Knee
Legged locomotion
predictive control
Robot kinematics
Stability criteria
stable standing
Three-legged robot
Trajectory
title Predictive control of stable standing of three-legged robot
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