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Karen J. Nolan

3 accepted papers

2025

Reinforcement Learning Assist-As-Needed Control Promotes Recovery of Walking Speed Following Ankle Weight Perturbations

IROS 2025

Self-selected walking speed is a key outcome for exercise-based rehabilitation programs following lower-extremity trauma. This work introduces a novel reinforcement learning-based assist-as-needed (RL-AAN) controller for ankle exoskeletons, aimed at gait speed training. Built on an actor–critic arch

Cited by 0SourceScholar
2019

Adaptive Assist-as-needed Control Based on Actor-Critic Reinforcement Learning

IROS 2019poster

In robot-assisted rehabilitation, assist-as-needed (AAN) controllers have been proposed to promote subjects’ active participation, which is thought to lead to better training outcomes. Most of these AAN controllers require a patient-specific manual tuning of the parameters defining the underlying fo…

Cited by 37SourceScholar