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Deep reinforcement learning (DRL) has emerged as an innovative solution for controlling legged robots in challenging environments using minimalist architectures. Traditional control methods for legged robots, such as inverse dynamics,…

Robotics · Computer Science 2024-12-13 Mincheol Kim , Nahyun Kwon , Jung-Yup Kim

Deep reinforcement learning is a promising approach to learning policies in uncontrolled environments that do not require domain knowledge. Unfortunately, due to sample inefficiency, deep RL applications have primarily focused on simulated…

Robotics · Computer Science 2022-08-17 Laura Smith , Ilya Kostrikov , Sergey Levine

This paper proposes a novel method to improve locomotion learning for a single quadruped robot using multi-agent deep reinforcement learning (MARL). Many existing methods use single-agent reinforcement learning for an individual robot or…

Robotics · Computer Science 2024-10-18 Qi Liu , Jingxiang Guo , Sixu Lin , Shuaikang Ma , Jinxuan Zhu , Yanjie Li

A vast number of applications for legged robots entail tasks in complex, dynamic environments. But these environments put legged robots at high risk for limb damage. This paper presents an empirical study of fault tolerant dynamic gaits…

Robotics · Computer Science 2023-09-25 Abriana Stewart-Height , Daniel E. Koditschek

Legged robots are physically capable of traversing a wide range of challenging environments, but designing controllers that are sufficiently robust to handle this diversity has been a long-standing challenge in robotics. Reinforcement…

Robotics · Computer Science 2021-10-12 Laura Smith , J. Chase Kew , Xue Bin Peng , Sehoon Ha , Jie Tan , Sergey Levine

Designing agile locomotion for quadruped robots often requires extensive expertise and tedious manual tuning. In this paper, we present a system to automate this process by leveraging deep reinforcement learning techniques. Our system can…

In nature, legged animals have developed the ability to adapt to challenging terrains through perception, allowing them to plan safe body and foot trajectories in advance, which leads to safe and energy-efficient locomotion. Inspired by…

Robotics · Computer Science 2023-10-12 Haojie Shi , Qingxu Zhu , Lei Han , Wanchao Chi , Tingguang Li , Max Q. -H. Meng

Collapsing terrains, often present in search and rescue missions or planetary exploration, pose significant challenges for quadruped robots. This paper introduces a robust locomotion framework for safe navigation over unstable surfaces by…

A motion-based control interface promises flexible robot operations in dangerous environments by combining user intuitions with the robot's motor capabilities. However, designing a motion interface for non-humanoid robots, such as…

Robotics · Computer Science 2022-04-29 Sunwoo Kim , Maks Sorokin , Jehee Lee , Sehoon Ha

Quadruped robots are designed to achieve agile and robust locomotion by drawing inspiration from legged animals. However, most existing control methods for quadruped robots lack a key capacity observed in animals: the ability to exhibit…

Robotics · Computer Science 2026-03-10 Aoqian Zhang , Zixuan Zhuang , Chunzheng Wang , Shuzhi Sam Ge , Fan Shi , Cheng Xiang

Jumping poses a significant challenge for quadruped robots, despite being crucial for many operational scenarios. While optimisation methods exist for controlling such motions, they are often time-consuming and demand extensive knowledge of…

Robotics · Computer Science 2026-05-19 Riccardo Bussola , Michele Focchi , Giulio Turrisi , Claudio Semini , Luigi Palopoli

Legged robots must adapt their gait to navigate unpredictable environments, a challenge that animals master with ease. However, most deep reinforcement learning (DRL) approaches to quadruped locomotion rely on a fixed gait, limiting…

Robotics · Computer Science 2025-06-24 Joseph Humphreys , Chengxu Zhou

We tackle the problem of perceptive locomotion in dynamic environments. In this problem, a quadrupedal robot must exhibit robust and agile walking behaviors in response to environmental clutter and moving obstacles. We present a…

Robotics · Computer Science 2023-02-21 Mingyo Seo , Ryan Gupta , Yifeng Zhu , Alexy Skoutnev , Luis Sentis , Yuke Zhu

In nature, animals with exceptional locomotion abilities, such as cougars, often possess asymmetric fore and hind legs. This observation inspired us: could optimizing the leg length of quadruped robots endow them with similar locomotive…

Robotics · Computer Science 2024-09-17 Ci Chen , Jiyu Yu , Haojian Lu , Hongbo Gao , Rong Xiong , Yue Wang

In this paper, we present a general learning framework for controlling a quadruped robot that can mimic the behavior of real animals and traverse challenging terrains. Our method consists of two steps: an imitation learning step to learn…

Robotics · Computer Science 2023-08-08 Tingguang Li , Yizheng Zhang , Chong Zhang , Qingxu Zhu , Jiapeng sheng , Wanchao Chi , Cheng Zhou , Lei Han

Taking inspiration from the natural gait transition mechanism of quadrupeds, devising a good gait transition strategy is important for quadruped robots to achieve energy-efficient locomotion on various terrains and velocities. While…

Robotics · Computer Science 2024-10-15 Daoxun Zhang , Xieyuanli Chen , Zhengyu Zhong , Ming Xu , Zhiqiang Zheng , Huimin Lu

Quadrupedal robots have emerged as a cutting-edge platform for assisting humans, finding applications in tasks related to inspection and exploration in remote areas. Nevertheless, their floating base structure renders them susceptible to…

Robotics · Computer Science 2023-06-23 I Made Aswin Nahrendra , Minho Oh , Byeongho Yu , Hyungtae Lim , Hyun Myung

Designing control policies for legged locomotion is complex due to the under-actuated and non-continuous robot dynamics. Model-free reinforcement learning provides promising tools to tackle this challenge. However, a major bottleneck of…

Robotics · Computer Science 2022-03-08 Tsung-Yen Yang , Tingnan Zhang , Linda Luu , Sehoon Ha , Jie Tan , Wenhao Yu

Recently, reinforcement learning has become a promising and polular solution for robot legged locomotion. Compared to model-based control, reinforcement learning based controllers can achieve better robustness against uncertainties of…

Robotics · Computer Science 2023-10-09 Yikai Wang , Zheyuan Jiang , Jianyu Chen

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