Search Results - "Ahn, Junhyeok"

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  1. 1

    Dynamic locomotion for passive-ankle biped robots and humanoids using whole-body locomotion control by Kim, Donghyun, Jorgensen, Steven Jens, Lee, Jaemin, Ahn, Junhyeok, Luo, Jianwen, Sentis, Luis

    “…Whole-body control (WBC) is a generic task-oriented control method for feedback control of loco-manipulation behaviors in humanoid robots. The combination of…”
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    Journal Article
  2. 2

    Versatile Locomotion Planning and Control for Humanoid Robots by Ahn, Junhyeok, Jorgensen, Steven Jens, Bang, Seung Hyeon, Sentis, Luis

    Published in Frontiers in robotics and AI (13-08-2021)
    “…We propose a locomotion framework for bipedal robots consisting of a new motion planning method, dubbed trajectory optimization for walking robots plus…”
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    Journal Article
  3. 3

    Control and evaluation of a humanoid robot with rolling contact joints on its lower body by Bang, Seung Hyeon, Gonzalez, Carlos, Ahn, Junhyeok, Paine, Nicholas, Sentis, Luis

    Published in Frontiers in robotics and AI (16-10-2023)
    “…In this paper, we introduce a new teen-sized humanoid platform dubbed DRACO 3, custom-built by Apptronik and altered for practical use by the Human Centered…”
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    Journal Article
  4. 4

    Online Gain Adaptation of Whole-Body Control for Legged Robots with Unknown Disturbances by Lee, Jaemin, Ahn, Junhyeok, Kim, Donghyun, Bang, Seung Hyeon, Sentis, Luis

    Published in Frontiers in robotics and AI (07-01-2022)
    “…This paper proposes an online gain adaptation approach to enhance the robustness of whole-body control (WBC) framework for legged robots under unknown external…”
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    Journal Article
  5. 5

    Investigations of a Robotic Test Bed With Viscoelastic Liquid Cooled Actuators by Kim, Donghyun, Ahn, Junhyeok, Campbell, Orion, Paine, Nicholas, Sentis, Luis

    Published in IEEE/ASME transactions on mechatronics (01-12-2018)
    “…We design, build, and thoroughly test a new type of actuator-dubbed viscoelastic liquid cooled actuator (VLCA) for robotic applications. VLCAs excel in the…”
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    Journal Article
  6. 6

    Investigations of viscoelastic liquid cooled actuators applied for dynamic motion control of legged systems by Donghyun Kim, Campbell, Orion, Junhyeok Ahn, Sentis, Luis, Paine, Nicholas

    “…To significantly improve actuation technology for legged systems, we design, build, and empirically test the viscoelastic liquid cooled actuator (VLCA) for use…”
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    Conference Proceeding
  7. 7

    Data-Efficient and Safe Learning for Humanoid Locomotion Aided by a Dynamic Balancing Model by Ahn, Junhyeok, Lee, Jaemin, Sentis, Luis

    Published in IEEE robotics and automation letters (01-07-2020)
    “…In this letter, we formulate a novel Markov Decision Process (MDP) for safe and data-efficient learning for humanoid locomotion aided by a dynamic balancing…”
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    Journal Article
  8. 8

    Fast Kinodynamic Bipedal Locomotion Planning with Moving Obstacles by Ahn, Junhyeok, Campbell, Orion, Kim, Donghyun, Sentis, Luis

    “…In this paper, we present a sampling-based kino-dynamic planning framework for a bipedal robot in complex environments. Unlike other footstep planning…”
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    Conference Proceeding
  9. 9

    Nested Mixture of Experts: Cooperative and Competitive Learning of Hybrid Dynamical System by Ahn, Junhyeok, Sentis, Luis

    Published 20-11-2020
    “…Model-based reinforcement learning (MBRL) algorithms can attain significant sample efficiency but require an appropriate network structure to represent system…”
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    Journal Article
  10. 10

    Control of a High Performance Bipedal Robot using Viscoelastic Liquid Cooled Actuators by Ahn, Junhyeok, Kim, Donghyun, Bang, Seunghyeon, Paine, Nick, Sentis, Luis

    “…This paper describes the control, and evaluation of a new human-scaled biped robot with liquid cooled viscoelastic actuators (VLCA). Based on the lessons…”
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    Conference Proceeding
  11. 11

    Data-Efficient and Safe Learning for Humanoid Locomotion Aided by a Dynamic Balancing Model by Ahn, Junhyeok, Lee, Jaemin, Sentis, Luis

    Published 20-04-2020
    “…In this letter, we formulate a novel Markov Decision Process (MDP) for safe and data-efficient learning for humanoid locomotion aided by a dynamic balancing…”
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    Journal Article
  12. 12

    Reachability-based Trajectory Optimization for Robotic Systems Given Sequences of Rigid Contacts by Lee, Jaemin, Ahn, Junhyeok, Bakolas, Efstathios, Sentis, Luis

    Published in 2020 American Control Conference (ACC) (01-07-2020)
    “…This paper proposes a method to generate feasible trajectories for robotic systems with predefined sequences of switched contacts. The proposed trajectory…”
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    Conference Proceeding
  13. 13

    Data-Driven Safety Verification and Explainability for Whole-Body Manipulation and Locomotion by Ahn, Junhyeok, Bang, Seung Hyeon, Gonzalez, Carlos, Yuan, Yuanchen, Sentis, Luis

    “…Planning safe motions for legged robots requires sophisticated safety verification tools. However, designing such tools for such complex systems is challenging…”
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    Conference Proceeding
  14. 14

    Control and Evaluation of a Humanoid Robot with Rolling Contact Knees by Bang, Seung Hyeon, Gonzalez, Carlos, Ahn, Junhyeok, Paine, Nicholas, Sentis, Luis

    Published 03-10-2022
    “…In this paper, we introduce the humanoid robot DRACO 3 by providing a high-level description of its design and control. This robot features proximal actuation…”
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    Journal Article
  15. 15

    Data-Driven Safety Verification for Legged Robots by Ahn, Junhyeok, Bang, Seung Hyeon, Gonzalez, Carlos, Yuan, Yuanchen, Sentis, Luis

    Published 24-02-2022
    “…Planning safe motions for legged robots requires sophisticated safety verification tools. However, designing such tools for such complex systems is challenging…”
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    Journal Article
  16. 16

    Control of A High Performance Bipedal Robot using Viscoelastic Liquid Cooled Actuators by Ahn, Junhyeok, Kim, Donghyun, Bang, SeungHyeon, Paine, Nick, Sentis, Luis

    Published 19-09-2019
    “…This paper describes the control, and evaluation of a new human-scaled biped robot with liquid cooled viscoelastic actuators (VLCA). Based on the lessons…”
    Get full text
    Journal Article
  17. 17

    Fast Kinodynamic Bipedal Locomotion Planning with Moving Obstacles by Ahn, Junhyeok, Campbell, Orion, Kim, Donghyun, Sentis, Luis

    Published 09-07-2018
    “…We present a sampling-based kinodynamic planning framework for a bipedal robot in complex environments. Unlike other footstep planner which typically plan…”
    Get full text
    Journal Article
  18. 18

    Investigations of a Robotic Testbed with Viscoelastic Liquid Cooled Actuators by Kim, Donghyun, Ahn, Junhyeok, Campbell, Orion, Paine, Nicholas, Sentis, Luis

    Published 05-11-2017
    “…We design, build, and thoroughly test a new type of actuator dubbed viscoelastic liquid cooled actuator (VLCA) for robotic applications. VLCAs excel in the…”
    Get full text
    Journal Article
  19. 19

    Exploring Model Predictive Control to Generate Optimal Control Policies for HRI Dynamical Systems by Jorgensen, Steven Jens, Campbell, Orion, Llado, Travis, Kim, Donghyun, Ahn, Junhyeok, Sentis, Luis

    Published 13-01-2017
    “…We model Human-Robot-Interaction (HRI) scenarios as linear dynamical systems and use Model Predictive Control (MPC) with mixed integer constraints to generate…”
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    Journal Article