Cited by 364Robotic Locomotion and ControlReinforcement Learning in RoboticsProsthetics and Rehabilitation Robotics

Learning Agile Robotic Locomotion Skills by Imitating Animals

Open access
Bin Peng, Xue, Coumans, Erwin, Zhang, Tingnan, Lee, Tsang-Wei, Tan, Jie, Levine, Sergey·2020·Robotics: Science and Systems XVI

Abstract

Reproducing the diverse and agile locomotion skills of animals has been a longstanding challenge in robotics. While manually-designed controllers have been able to emulate many complex behaviors, building such controllers involves a time-consuming and difficult development process, often requiring substantial expertise of the nuances of each skill. Reinforcement learning provides an appealing alternative for automating the manual effort involved in the development of controllers. However, designing learning objectives that elicit the desired behaviors from an agent can also require a great deal of skill-specific expertise. In this work, we present an imitation learning system that enables legged robots to learn agile locomotion skills by imitating real-world animals. We show that by leveraging reference motion data, a single learning-based approach is able to automatically synthesize controllers for a diverse repertoire behaviors for legged robots. By incorporating sample efficient domain adaptation techniques into the training process, our system is able to learn adaptive policies in simulation that can then be quickly adapted for real-world deployment. To demonstrate the effectiveness of our system, we train an 18-DoF quadruped robot to perform a variety of agile behaviors ranging from different locomotion gaits to dynamic hops and turns.

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  • Application of reinforcement learning to legged locomotion has largely been confined to laboratory environments and conditions.

    “However, application of RL to legged locomotion has largely been confined to laboratory environments and conditions.”

    From Learning quadrupedal locomotion over challenging terrain (2020) · cites this paper as [19]

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Research works printed but not linked: 3

  1. Stephen Butterworth et al. On the theory of filter amplifiers. Wireless Engineer, 7(6):536-541, 1930.
  2. Gerhard Neumann and Jan R. Peters. Fitted q- iteration by advantage weighted regression. In D. Koller, D. Schuurmans, Y. Bengio, and L. Bottou, editors, Advances in Neural Information Processing Systems 21, pages 1177-1184.
  3. KangKang Yin, Kevin Loken, and Michiel van de Panne. Simbicon: Simple biped locomotion control. ACM Trans. Graph., 26(3):Article 105, 2007.

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Authors
Bin Peng, X., Coumans, E., Zhang, T., Lee, T.-W., Tan, J., & Levine, S.
Affiliations
Google (United States) (US)
Venue
Robotics: Science and Systems XVI
Published
2020-07-12
OpenAlex
W3014488508
Cited by
357
References
70
Citations by year
2026: 11 · 2025: 62 · 2024: 60 · 2023: 69 · 2022: 74 · 2021: 67 · 2020: 13 · 2019: 1
FWCI
101.22
Type
conference paper
Language
en
Open access
Locations
  • Robotics: Science and Systems (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Robotic Locomotion and Control
  • Physical Sciences › Computer Science › Artificial Intelligence › Reinforcement Learning in Robotics
  • Physical Sciences › Engineering › Biomedical Engineering › Prosthetics and Rehabilitation Robotics
Keywords
agile locomotion, legged robots, quadruped robot, imitation learning, Animal locomotion, reinforcement learning, domain adaptation, sample efficiency, controller synthesis, locomotion gaits, sim-to-real transfer

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