User-Driven Learning from Demonstration: A Trajectory and Impedance Learning Method

• URL: http://arxiv.org/abs/2607.16998v1
• Date: Sat, 18 Jul 2026 23:27:17 GMT
• Title: User-Driven Learning from Demonstration: A Trajectory and Impedance Learning Method
• Abstract summary: The method eliminates repeated teaching for the same task and enables real-time learning from a single demonstration.<n>The proposed approach is validated through comprehensive experiments on a 7 Degree-of-Freedom (DOF) KUKA LWR IV+ robot.
• Score: 7.8260466406864575
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: This paper presents a method for user-driven robot Learning from Demonstration (LfD) that reduces user effort while ensuring compliant and precise reproduction. The method eliminates repeated teaching for the same task and enables real-time learning from a single demonstration. Demonstrated motions are reproduced with high precision, while impedance variations are learned in real time to provide both compliance and robustness against perturbations. This mitigates potential safety issues in Human-Robot Interaction (HRI) that arise from conventional time-indexed trajectories lacking compliance. The proposed approach integrates a three-dimensional (3D) Fast Diffeomorphic Matching (FDM) algorithm with a Dynamical System (DS)-based motion generator to achieve real-time single-shot demonstration learning and reproduction. An Extended Kalman Filter (EKF) framework compensates for reproduction errors and recovers from external interactions. Furthermore, an impedance parameterization function is incorporated to learn impedance variations from demonstrations and maintain surface contact for specific applications. The proposed approach is validated through comprehensive experiments on a 7 Degree-of-Freedom (DOF) KUKA LWR IV+ robot.

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