Search Results - "Ahn, Junhyeok"
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Dynamic locomotion for passive-ankle biped robots and humanoids using whole-body locomotion control
Published in The International journal of robotics research (01-07-2020)“…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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Versatile Locomotion Planning and Control for Humanoid Robots
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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Control and evaluation of a humanoid robot with rolling contact joints on its lower body
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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Online Gain Adaptation of Whole-Body Control for Legged Robots with Unknown Disturbances
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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5
Investigations of a Robotic Test Bed With Viscoelastic Liquid Cooled Actuators
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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Investigations of viscoelastic liquid cooled actuators applied for dynamic motion control of legged systems
Published in 2017 IEEE-RAS 17th International Conference on Humanoid Robotics (Humanoids) (01-11-2017)“…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 -
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Data-Efficient and Safe Learning for Humanoid Locomotion Aided by a Dynamic Balancing Model
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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Fast Kinodynamic Bipedal Locomotion Planning with Moving Obstacles
Published in 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (01-10-2018)“…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 -
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Nested Mixture of Experts: Cooperative and Competitive Learning of Hybrid Dynamical System
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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10
Control of a High Performance Bipedal Robot using Viscoelastic Liquid Cooled Actuators
Published in 2019 IEEE-RAS 19th International Conference on Humanoid Robots (Humanoids) (01-10-2019)“…This paper describes the control, and evaluation of a new human-scaled biped robot with liquid cooled viscoelastic actuators (VLCA). Based on the lessons…”
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Conference Proceeding -
11
Data-Efficient and Safe Learning for Humanoid Locomotion Aided by a Dynamic Balancing Model
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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12
Reachability-based Trajectory Optimization for Robotic Systems Given Sequences of Rigid Contacts
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
Data-Driven Safety Verification and Explainability for Whole-Body Manipulation and Locomotion
Published in 2022 IEEE-RAS 21st International Conference on Humanoid Robots (Humanoids) (28-11-2022)“…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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Conference Proceeding -
14
Control and Evaluation of a Humanoid Robot with Rolling Contact Knees
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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15
Data-Driven Safety Verification for Legged Robots
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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16
Control of A High Performance Bipedal Robot using Viscoelastic Liquid Cooled Actuators
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…”
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Journal Article -
17
Fast Kinodynamic Bipedal Locomotion Planning with Moving Obstacles
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…”
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Journal Article -
18
Investigations of a Robotic Testbed with Viscoelastic Liquid Cooled Actuators
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
Exploring Model Predictive Control to Generate Optimal Control Policies for HRI Dynamical Systems
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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