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Multi-legged robots offer enhanced stability to navigate complex terrains with their multiple legs interacting with the environment. However, how to effectively coordinate the multiple legs in a larger action exploration space to generate…

Robotics · Computer Science 2025-11-06 Xin Liu , Jinze Wu , Yinghui Li , Chenkun Qi , Yufei Xue , Feng Gao

Quadruped animals are capable of exhibiting a diverse range of locomotion gaits. While progress has been made in demonstrating such gaits on robots, current methods rely on motion priors, dynamics models, or other forms of extensive manual…

Robotics · Computer Science 2024-02-23 David DeFazio , Yohei Hayamizu , Shiqi Zhang

Legged robots pose one of the greatest challenges in robotics. Dynamic and agile maneuvers of animals cannot be imitated by existing methods that are crafted by humans. A compelling alternative is reinforcement learning, which requires…

Legged locomotion holds the premise of universal mobility, a critical capability for many real-world robotic applications. Both model-based and learning-based approaches have advanced the field of legged locomotion in the past three…

Robotics · Computer Science 2024-11-26 Sehoon Ha , Joonho Lee , Michiel van de Panne , Zhaoming Xie , Wenhao Yu , Majid Khadiv

Traversing narrow paths is challenging for humanoid robots due to the sparse and safety-critical footholds required. Purely template-based or end-to-end reinforcement learning-based methods suffer from such harsh terrains. This paper…

Robotics · Computer Science 2025-09-23 TianChen Huang , Runchen Xu , Yu Wang , Wei Gao , Shiwu Zhang

Humanoid robots can, in principle, use their legs to go almost anywhere. Developing controllers capable of traversing diverse terrains, however, remains a considerable challenge. Classical controllers are hard to generalize broadly while…

Robotics · Computer Science 2024-10-07 Ilija Radosavovic , Sarthak Kamat , Trevor Darrell , Jitendra Malik

Legged robots are increasingly entering new domains and applications, including search and rescue, inspection, and logistics. However, for such systems to be valuable in real-world scenarios, they must be able to autonomously and robustly…

Robotics · Computer Science 2025-01-30 Ilyass Taouil , Giulio Turrisi , Daniel Schleich , Victor Barasuol , Claudio Semini , Sven Behnke

In the context of legged robots, adaptive behavior involves adaptive balancing and adaptive swing foot reflection. While adaptive balancing counteracts perturbations to the robot, adaptive swing foot reflection helps the robot to navigate…

Robotics · Computer Science 2024-03-21 Yiyu Chen , Quan Nguyen

Quadrupedal robots have demonstrated remarkable agility and robustness in traversing complex terrains. However, they struggle with dynamic object interactions, where contact must be precisely sensed and controlled. To bridge this gap, we…

Quadrupedal locomotion plays a critical role in enabling agile, versatile movement across complex terrains. Understanding and estimating the underlying physical dynamics are essential for achieving efficient and stable quadrupedal…

Robotics · Computer Science 2026-05-05 Aman Arora , Nalini Ratha

Humanoid robots have demonstrated robust locomotion capabilities using Reinforcement Learning (RL)-based approaches. Further, to obtain human-like behaviors, existing methods integrate human motion-tracking or motion prior in the RL…

Robotics · Computer Science 2025-06-13 Dewei Wang , Xinmiao Wang , Xinzhe Liu , Jiyuan Shi , Yingnan Zhao , Chenjia Bai , Xuelong Li

Recently reinforcement learning (RL) has emerged as a promising approach for quadrupedal locomotion, which can save the manual effort in conventional approaches such as designing skill-specific controllers. However, due to the complex…

Robotics · Computer Science 2021-09-17 Haojie Shi , Bo Zhou , Hongsheng Zeng , Fan Wang , Yueqiang Dong , Jiangyong Li , Kang Wang , Hao Tian , Max Q. -H. Meng

Humans possess delicate dynamic balance mechanisms that enable them to maintain stability across diverse terrains and under extreme conditions. However, despite significant advances recently, existing locomotion algorithms for humanoid…

Robotics · Computer Science 2025-03-03 Weiji Xie , Chenjia Bai , Jiyuan Shi , Junkai Yang , Yunfei Ge , Weinan Zhang , Xuelong Li

Agile-legged robots have proven to be highly effective in navigating and performing tasks in complex and challenging environments, including disaster zones and industrial settings. However, these applications normally require the capability…

Robotics · Computer Science 2024-04-09 Mohsen Sombolestan , Quan Nguyen

Bipedal robots do not perform well as humans since they do not learn to walk like we do. In this paper we propose a method to train a bipedal robot to perform some basic movements with the help of imitation learning (IL) in which an…

Robotics · Computer Science 2021-05-18 Vishal Kumar , Sinnu Susan Thomas

This paper develops a hierarchical learning and optimization framework that can learn and achieve well-coordinated multi-skill locomotion. The learned multi-skill policy can switch between skills automatically and naturally in tracking…

This research focuses on developing reinforcement learning approaches for the locomotion generation of small-size quadruped robots. The rat robot NeRmo is employed as the experimental platform. Due to the constrained volume, small-size…

Robotics · Computer Science 2024-04-16 Xinhui Shan , Yuhong Huang , Zhenshan Bing , Zitao Zhang , Xiangtong Yao , Kai Huang , Alois Knoll

Collision-free motion is essential for mobile robots. Most approaches to collision-free and efficient navigation with wheeled robots require parameter tuning by experts to obtain good navigation behavior. This study investigates the…

Robotics · Computer Science 2024-08-08 Hamid Taheri , Seyed Rasoul Hosseini , Mohammad Ali Nekoui

Humanoid robots are made to resemble humans but their locomotion abilities are far from ours in terms of agility and versatility. When humans walk on complex terrains, or face external disturbances, they combine a set of strategies,…

Robotics · Computer Science 2021-10-28 Mohammadreza Kasaei , Miguel Abreu , Nuno Lau , Artur Pereira , Luis Paulo Reis

We show dynamic locomotion strategies for wheeled quadrupedal robots, which combine the advantages of both walking and driving. The developed optimization framework tightly integrates the additional degrees of freedom introduced by the…