Dynamics randomization revisited: A case study for quadrupedal locomotion

Z Xie, X Da, M Van de Panne… - … on Robotics and …, 2021 - ieeexplore.ieee.org
Understanding the gap between simulation and reality is critical for reinforcement learning
with legged robots, which are largely trained in simulation. However, recent work has …

[HTML][HTML] A survey of the development of quadruped robots: Joint configuration, dynamic locomotion control method and mobile manipulation approach

H Chai, Y Li, R Song, G Zhang, Q Zhang, S Liu… - Biomimetic Intelligence …, 2022 - Elsevier
Some quadruped robots developed recently show better dynamic performance and
environmental adaptability than ever, and have been preliminarily applied in the field of …

Glide: Generalizable quadrupedal locomotion in diverse environments with a centroidal model

Z Xie, X Da, B Babich, A Garg, M de Panne - International Workshop on …, 2022 - Springer
Abstract Model-free reinforcement learning (RL) for legged locomotion commonly relies on a
physics simulator that can accurately predict the behaviors of every degree of freedom of the …

Reinforcement learning with evolutionary trajectory generator: A general approach for quadrupedal locomotion

H Shi, B Zhou, H Zeng, F Wang, Y Dong… - IEEE Robotics and …, 2022 - ieeexplore.ieee.org
Recently reinforcement learning (RL) has emerged as a promising approach for
quadrupedal locomotion, which can save the manual effort in conventional approaches such …

Zero dynamics, pendulum models, and angular momentum in feedback control of bipedal locomotion

Y Gong, JW Grizzle - Journal of Dynamic Systems …, 2022 - asmedigitalcollection.asme.org
Low-dimensional models are ubiquitous in the bipedal robotics literature. On the one hand
is the community of researchers that bases feedback control design on pendulum models …

Compression spin bio-inspired arm: A conceptual model based on compression–torsion cubic mechanical metamaterials with variable cross-section

L Wang, MR An, HT Liu - Extreme Mechanics Letters, 2020 - Elsevier
Robots are designed to achieve muscle contraction, body curling, stress response, and
other complex movements. Inspired by the arm configuration and compression–torsion cubic …

Robust footstep planning and LQR control for dynamic quadrupedal locomotion

G Xin, S Xin, O Cebe, MJ Pollayil… - IEEE Robotics and …, 2021 - ieeexplore.ieee.org
In this letter, we aim to improve the robustness of dynamic quadrupedal locomotion through
two aspects: 1) fast model predictive foothold planning, and 2) applying LQR to projected …

[PDF][PDF] Quadruped robots mechanism, structural design, energy, gait, stability, and actuators: a review study

AH Abdulwahab, AZA Mazlan, AF Hawary… - International Journal of …, 2023 - ijmerr.com
Recently developed quadruped robots have more efficient dynamic performance and
adaptation to environments than before. They have already been used in the building of …

A stability locomotion-control strategy for quadruped robots with center-of-mass dynamic planning

Y Han, G Liu, Z Lu, H Zong, J Zhang, F Zhong… - Journal of Zhejiang …, 2023 - Springer
Locomotion stability is essential for controlling quadruped robots and adapting them to
unstructured terrain. We propose a control strategy with center-of-mass (CoM) dynamic …

Enhanced balance for legged robots using reaction wheels

CY Lee, S Yang, B Bokser… - 2023 IEEE International …, 2023 - ieeexplore.ieee.org
We introduce a reaction wheel system that enhances the balancing capabilities and stability
of quadrupedal robots during challenging locomotion tasks. Inspired by both the standard …