136 citations · 167 across the 14 of their papers we have counts for
15 papers
Variable Inertia Model Predictive Control for Fast Bipedal Maneuvers
Seung Hyeon Bang, Jaemin Lee, Carlos Gonzalez +1
This paper proposes a novel control framework for agile and robust bipedal locomotion, addressing model discrepancies between full-body and reduced-order models. Specifically, assu…
Hierarchical Relaxation of Safety-critical Controllers: Mitigating Contradictory Safety Conditions with Application to Quadruped Robots
Jaemin Lee, Jeeseop Kim, Aaron D. Ames
The safety-critical control of robotic systems often must account for multiple, potentially conflicting, safety constraints. This paper proposes novel relaxation techniques to addr…
Safety-Critical Coordination for Cooperative Legged Locomotion via Control Barrier Functions
Jeeseop Kim, Jaemin Lee, Aaron D. Ames
This paper presents a safety-critical approach to the coordinated control of cooperative robots locomoting in the presence of fixed (holonomic) constraints. To this end, we leverag…
Sample Efficient Dynamics Learning for Symmetrical Legged Robots:Leveraging Physics Invariance and Geometric Symmetries
Jee-eun Lee, Jaemin Lee, Tirthankar Bandyopadhyay +1
Model generalization of the underlying dynamics is critical for achieving data efficiency when learning for robot control. This paper proposes a novel approach for learning dynamic…
Real-Time Model Predictive Control for Industrial Manipulators with Singularity-Tolerant Hierarchical Task Control
Jaemin Lee, Mingyo Seo, Andrew Bylard +2
This paper proposes a real-time model predictive control (MPC) scheme to execute multiple tasks using robots over a finite-time horizon. In industrial robotic applications, we must…
MPC-Based Hierarchical Task Space Control of Underactuated and Constrained Robots for Execution of Multiple Tasks
Jaemin Lee, Seung Hyeon Bang, Efstathios Bakolas +1
This paper proposes an MPC-based controller to efficiently execute multiple hierarchical tasks for underactuated and constrained robotic systems. Existing task-space controllers or…
BP-RRT: Barrier Pair Synthesis for Temporal Logic Motion Planning
Binghan He, Jaemin Lee, Ufuk Topcu +1
For a nonlinear system (e.g. a robot) with its continuous state space trajectories constrained by a linear temporal logic specification, the synthesis of a low-level controller for…
Data-Efficient and Safe Learning for Humanoid Locomotion Aided by a Dynamic Balancing Model
Junhyeok Ahn, Jaemin Lee, Luis Sentis
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 model. In our previous…
Efficient Trajectory Generation for Robotic Systems Constrained by Contact Forces
Jaemin Lee, Efstathios Bakolas, Luis Sentis
In this work, we propose a trajectory generation method for robotic systems with contact force constraint based on optimal control and reachability analysis. Normally, the dynamics…
Dynamic Locomotion For Passive-Ankle Biped Robots And Humanoids Using Whole-Body Locomotion Control
D. Kim, S. Jorgensen, J. Lee +3
Whole-body control (WBC) is a generic task-oriented control method for feedback control of loco-manipulation behaviors in humanoid robots. The combination of WBC and model-based wa…
Trajectory Generation for Robotic Systems with Contact Force Constraints
Jaemin Lee, Efstathios Bakolas, Luis Sentis
This paper presents a trajectory generation method for contact-constrained robotic systems such as manipulators and legged robots. Contact-constrained systems are affected by the i…
Social Navigation Planning Based on People's Awareness of Robots
Minkyu Kim, Jaemin Lee, Steven Jens Jorgensen +1
When mobile robots maneuver near people, they run the risk of rudely blocking their paths; but not all people behave the same around robots. People that have not noticed the robot…
Prioritized Kinematic Control of Joint-Constrained Head-Eye Robots using the Intermediate Value Approach
Steven Jens Jorgensen, Orion Campbell, Travis Llado +3
Existing gaze controllers for head-eye robots can only handle single fixation points. Here, a generic controller for head-eye robots capable of executing simultaneous and prioritiz…
Computationally-Robust and Efficient Prioritized Whole-Body Controller with Contact Constraints
Donghyun Kim, Jaemin Lee, Orion Campbell +2
In this paper, we devise methods for the multi- objective control of humanoid robots, a.k.a. prioritized whole- body controllers, that achieve efficiency and robustness in the algo…
Robust Dynamic Locomotion via Reinforcement Learning and Novel Whole Body Controller
Donghyun Kim, Jaemin Lee, Luis Sentis
We propose a robust dynamic walking controller consisting of a dynamic locomotion planner, a reinforcement learning process for robustness, and a novel whole-body locomotion contro…