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Humans are highly adept at walking in environments with foot placement constraints, including stepping-stone scenarios where the footstep locations are fully constrained. Finding good solutions to stepping-stone locomotion is a longstanding…

Graphics · Computer Science 2020-09-01 Zhaoming Xie , Hung Yu Ling , Nam Hee Kim , Michiel van de Panne

Learning highly dynamic behaviors for robots has been a longstanding challenge. Traditional approaches have demonstrated robust locomotion, but the exhibited behaviors lack diversity and agility. They employ approximate models, which lead…

Robotics · Computer Science 2024-02-22 Chong Zhang , Jiapeng Sheng , Tingguang Li , He Zhang , Cheng Zhou , Qingxu Zhu , Rui Zhao , Yizheng Zhang , Lei Han

Spring-based actuators in legged locomotion provide energy-efficiency and improved performance, but increase the difficulty of controller design. While previous work has focused on extensive modeling and simulation to find optimal…

Robotics · Computer Science 2023-08-22 Antonin Raffin , Daniel Seidel , Jens Kober , Alin Albu-Schäffer , João Silvério , Freek Stulp

Today's robotic quadruped systems can robustly walk over a diverse range of rough but continuous terrains, where the terrain elevation varies gradually. Locomotion on discontinuous terrains, such as those with gaps or obstacles, presents a…

Robotics · Computer Science 2021-11-01 Gabriel B. Margolis , Tao Chen , Kartik Paigwar , Xiang Fu , Donghyun Kim , Sangbae Kim , Pulkit Agrawal

With the research into development of quadruped robots picking up pace, learning based techniques are being explored for developing locomotion controllers for such robots. A key problem is to generate leg trajectories for continuously…

Legged robots must exhibit robust and agile locomotion across diverse, unstructured terrains, a challenge exacerbated under blind locomotion settings where terrain information is unavailable. This work introduces a hierarchical…

Robotics · Computer Science 2025-11-05 Matheus P. Angarola , Francisco Affonso , Marcelo Becker

Robots operating in human environments need various skills, like slow and fast walking, turning, side-stepping, and many more. However, building robot controllers that can exhibit such a large range of behaviors is a challenging problem…

Robotics · Computer Science 2022-02-28 Tianyu Li , Jungdam Won , Sehoon Ha , Akshara Rai

Robotic collaborative carrying could greatly benefit human activities like warehouse and construction site management. However, coordinating the simultaneous motion of multiple robots represents a significant challenge. Existing works…

Robotics · Computer Science 2026-03-25 Francesca Bray , Simone Tolomei , Andrei Cramariuc , Cesar Cadena , Marco Hutter

While reinforcement learning (RL) has the potential to enable robots to autonomously acquire a wide range of skills, in practice, RL usually requires manual, per-task engineering of reward functions, especially in real world settings where…

Robotics · Computer Science 2019-02-15 Tianhe Yu , Gleb Shevchuk , Dorsa Sadigh , Chelsea Finn

Quadrupedal locomotion is a complex, open-ended problem vital to expanding autonomous vehicle reach. Traditional reinforcement learning approaches often fall short due to training instability and sample inefficiency. We propose a novel…

Robotics · Computer Science 2024-11-14 Martin Robert , Simon Brodeur , Francois Ferland

Learning to locomote to arbitrary goals on hardware remains a challenging problem for reinforcement learning. In this paper, we present a hierarchical learning framework that improves sample-efficiency and generalizability of locomotion…

Robotics · Computer Science 2019-09-30 Tianyu Li , Nathan Lambert , Roberto Calandra , Franziska Meier , Akshara Rai

Achieving precise target jumping with legged robots poses a significant challenge due to the long flight phase and the uncertainties inherent in contact dynamics and hardware. Forcefully attempting these agile motions on hardware could…

Robotics · Computer Science 2024-08-06 Chuong Nguyen , Lingfan Bao , Quan Nguyen

Enabling bipedal walking robots to learn how to maneuver over highly uneven, dynamically changing terrains is challenging due to the complexity of robot dynamics and interacted environments. Recent advancements in learning from…

Robotics · Computer Science 2023-09-29 Feiyang Wu , Zhaoyuan Gu , Hanran Wu , Anqi Wu , Ye Zhao

We present a general, two-stage reinforcement learning approach to create robust policies that can be deployed on real robots without any additional training using a single demonstration generated by trajectory optimization. The…

Robotics · Computer Science 2022-01-25 Miroslav Bogdanovic , Majid Khadiv , Ludovic Righetti

The process of robot design is a complex task and the majority of design decisions are still based on human intuition or tedious manual tuning. A more informed way of facing this task is computational design methods where design parameters…

Robotics · Computer Science 2022-10-07 Álvaro Belmonte-Baeza , Joonho Lee , Giorgio Valsecchi , Marco Hutter

Recent advances of locomotion controllers utilizing deep reinforcement learning (RL) have yielded impressive results in terms of achieving rapid and robust locomotion across challenging terrain, such as rugged rocks, non-rigid ground, and…

Robotics · Computer Science 2024-03-07 Zifan Xu , Amir Hossain Raj , Xuesu Xiao , Peter Stone

Legged robots have the potential to traverse complex terrain and access confined spaces beyond the reach of traditional platforms thanks to their ability to carefully select footholds and flexibly adapt their body posture while walking.…

Robotics · Computer Science 2024-03-04 Takahiro Miki , Joonho Lee , Lorenz Wellhausen , Marco Hutter

Bipedal humanoid robots must precisely coordinate balance, timing, and contact decisions when locomoting on constrained footholds such as stepping stones, beams, and planks -- even minor errors can lead to catastrophic failure. Classical…

Robotics · Computer Science 2026-01-13 Min Dai , William D. Compton , Junheng Li , Lizhi Yang , Aaron D. Ames

Incorporating a robotic manipulator into a wheel-legged robot enhances its agility and expands its potential for practical applications. However, the presence of potential instability and uncertainties presents additional challenges for…

Robotics · Computer Science 2024-03-29 Zifan Wang , Yufei Jia , Lu Shi , Haoyu Wang , Haizhou Zhao , Xueyang Li , Jinni Zhou , Jun Ma , Guyue Zhou

Quadruped robots must exhibit robust walking capabilities in practical applications. In this work, we propose a novel approach that enables quadruped robots to pass various small obstacles, or "tiny traps". Existing methods often rely on…

Robotics · Computer Science 2024-09-13 Shaoting Zhu , Runhan Huang , Linzhan Mou , Hang Zhao