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This work introduces a model-free reinforcement learning framework that enables various modes of motion (quadruped, tripod, or biped) and diverse tasks for legged robot locomotion. We employ a motion-style reward based on a relaxed…

Robotics · Computer Science 2025-05-12 Gijeong Kim , Yong-Hoon Lee , Hae-Won Park

Numerous locomotion controllers have been designed based on Reinforcement Learning (RL) to facilitate blind quadrupedal locomotion traversing challenging terrains. Nevertheless, locomotion control is still a challenging task for quadruped…

Robotics · Computer Science 2024-07-08 Zhiyuan Xiao , Xinyu Zhang , Xiang Zhou , Qingrui Zhang

The physical design of a robot and the policy that controls its motion are inherently coupled, and should be determined according to the task and environment. In an increasing number of applications, data-driven and learning-based…

Robotics · Computer Science 2018-09-18 Charles Schaff , David Yunis , Ayan Chakrabarti , Matthew R. Walter

Deployment in hazardous environments requires robots to understand the risks associated with their actions and movements to prevent accidents. Despite its importance, these risks are not explicitly modeled by currently deployed locomotion…

Robotics · Computer Science 2024-05-06 Lukas Schneider , Jonas Frey , Takahiro Miki , Marco Hutter

Quadruped robots excel in traversing complex, unstructured environments where wheeled robots often fail. However, enabling efficient and adaptable locomotion remains challenging due to the quadrupeds' nonlinear dynamics, high degrees of…

Robotics · Computer Science 2025-05-14 Anudeep Sajja , Shahram Khorshidi , Sebastian Houben , Maren Bennewitz

Recent advancements in reinforcement learning (RL) have led to significant progress in humanoid robot locomotion, simplifying the design and training of motion policies in simulation. However, the numerous implementation details make…

Robotics · Computer Science 2025-06-19 Yushi Wang , Penghui Chen , Xinyu Han , Feng Wu , Mingguo Zhao

Learning multiple gaits is non-trivial for legged robots, especially when encountering different terrains and velocity commands. In this work, we present an end-to-end training framework for learning multiple gaits for quadruped robots,…

Robotics · Computer Science 2023-08-08 Jinze Wu , Yufei Xue , Chenkun Qi

Robotic locomotion is often approached with the goal of maximizing robustness and reactivity by increasing motion control frequency. We challenge this intuitive notion by demonstrating robust and dynamic locomotion with a learned motion…

Robotics · Computer Science 2023-02-22 Siddhant Gangapurwala , Luigi Campanaro , Ioannis Havoutis

This paper investigates the application of Deep Reinforcement (DRL) Learning to address motion control challenges in drones for additive manufacturing (AM). Drone-based additive manufacturing promises flexible and autonomous material…

Robotics · Computer Science 2025-04-15 Gaurav Shetty , Mahya Ramezani , Hamed Habibi , Holger Voos , Jose Luis Sanchez-Lopez

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

This paper presents a hierarchical framework for Deep Reinforcement Learning that acquires motor skills for a variety of push recovery and balancing behaviors, i.e., ankle, hip, foot tilting, and stepping strategies. The policy is trained…

Robotics · Computer Science 2020-02-11 Chuanyu Yang , Kai Yuan , Wolfgang Merkt , Taku Komura , Sethu Vijayakumar , Zhibin Li

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

Resource-constrained robotic platforms are particularly useful for tasks that require low-cost hardware alternatives due to the risk of losing the robot, like in search-and-rescue applications, or the need for a large number of devices,…

Robotics · Computer Science 2024-02-21 Orhan Eren Akgün , Néstor Cuevas , Matheus Farias , Daniel Garces

Inspired by the necessity of morphological adaptation in animals, a growing body of work has attempted to expand robot training to encompass physical aspects of a robot's design. However, reinforcement learning methods capable of optimizing…

Robotics · Computer Science 2024-03-05 Muhan Li , David Matthews , Sam Kriegman

Learning controllers for bipedal robots is a challenging problem, often requiring expert knowledge and extensive tuning of parameters that vary in different situations. Recently, deep reinforcement learning has shown promise at…

Robotics · Computer Science 2018-10-01 Tianyu Li , Akshara Rai , Hartmut Geyer , Christopher G. Atkeson

Symmetry is a fundamental aspect of many real-world robotic tasks. However, current deep reinforcement learning (DRL) approaches can seldom harness and exploit symmetry effectively. Often, the learned behaviors fail to achieve the desired…

Robotics · Computer Science 2024-03-08 Mayank Mittal , Nikita Rudin , Victor Klemm , Arthur Allshire , Marco Hutter

Parkour is a grand challenge for legged locomotion that requires robots to overcome various obstacles rapidly in complex environments. Existing methods can generate either diverse but blind locomotion skills or vision-based but specialized…

Deep reinforcement learning has shown its advantages in real-time decision-making based on the state of the agent. In this stage, we solved the task of using a real robot to manipulate the cube to a given trajectory. The task is broken down…

Robotics · Computer Science 2021-12-10 Qingfeng Yao , Jilong Wang , Shuyu Yang

Space exploration missions have seen use of increasingly sophisticated robotic systems with ever more autonomy. Deep learning promises to take this even a step further, and has applications for high-level tasks, like path planning, as well…

Machine Learning · Computer Science 2019-09-16 Tamir Blum , William Jones , Kazuya Yoshida

Reinforcement Learning (RL) has seen many recent successes for quadruped robot control. The imitation of reference motions provides a simple and powerful prior for guiding solutions towards desired solutions without the need for meticulous…

Robotics · Computer Science 2023-03-27 Yuni Fuchioka , Zhaoming Xie , Michiel van de Panne