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Nicolas Petit

4 accepted papers

2023

Enabling safe walking rehabilitation on the exoskeleton Atalante: experimental results

ICRA 2023poster

This paper exposes a control architecture enabling rehabilitation of walking impaired patients with the lower-limb exoskeleton Atalante. Atalante's control system is modified to allow the patient to contribute to the walking motion through their efforts. Only the swing leg degree of freedom along th…

Cited by 1SourceScholar
2022

MOVIE: A Velocity-Aided IMU Attitude Estimator for Observing and Controlling Multiple Deformations on Legged Robots

RA-L 2022

This letter presents a novel observer for estimating the state of a legged robot with deformations in the structure, taking into account the dynamic nature of walking motions. Specifically, it considers a robot with several punctual deformations, whose rotations are estimated using low-cost IMUs. To

Cited by 17SourceScholar
2020

Improving Low-Level Control of the Exoskeleton Atalante in Single Support by Compensating Joint Flexibility

IROS 2020poster

This paper describes a novel low-level controller for the lower-limb exoskeleton Atalante. The controller implemented on the commercialized product Atalante works under the assumption of full rigidity, performing position control through decentralized joint PIDs. However, this controller is unable t…

Cited by 9SourceScholar
2020

State Estimation for a Legged Robot With Multiple Flexibilities Using IMUs: A Kinematic Approach

RA-L 2020

This letter presents a general state estimation method for legged robots having internal flexibilities. In details, the method is applicable to any robot with an arbitrary number of punctual deformations, during standing and walking phases on flat ground. Focused on balance applications, this estima

Cited by 15SourceScholar