@inproceedings{44e52100970a4bbbbe2217db80abcd92,
title = "Null-Space Compliance with Non-linear Behavior: Application to Spine Surgery Robotic Platform",
abstract = "In this paper, we develop a novel control strategy to constrain the internal motion of a robotic platform intended to assist surgeons in spine surgery. The targeted task consists in drilling into a specific region of vertebrae in order to position spinal implants and thus re-ensure the spine stability. The present platform includes a redundant robotic arm with 7 degrees of freedom (DoF) directly manipulated by the surgeon in a comanipulation scheme. A torque-based impedance control has been chosen to generate a compliant behavior on the whole body of the robot and thus increase the degree of safety of the robotic device. In this regard, a new control law was implemented to constrain the internal motion of the robot, i.e. the movements of its elbow, allowed by its degree of redundancy. Unlike the classical control approaches, the proposed control law implements a non-linear response of the stiffness in the null-space to better comply with the motion constraints. In order to validate the behavior of the robot using this new control law, experimental tests have been carried out and their results were compared with those obtained with a classic null-space compliance law defined in joint coordinates.",
keywords = "Non-linear behavior, Null-space compliance, Orthopedic surgical robot, Safety, Spine surgery",
author = "Aliz{\'e}e Koszulinski and Juan Sandoval and T{\'e}rence Essomba and Tanguy Vendeuvre and Sa{\"i}d Zeghloul and Laribi, {Med Amine}",
note = "Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.; 31st International Conference on Robotics in Alpe-Adria-Danube Region, RAAD 2022 ; Conference date: 08-06-2022 Through 10-06-2022",
year = "2022",
doi = "10.1007/978-3-031-04870-8_38",
language = "???core.languages.en_GB???",
isbn = "9783031048692",
series = "Mechanisms and Machine Science",
publisher = "Springer Science and Business Media B.V.",
pages = "325--332",
editor = "Andreas M{\"u}ller and Mathias Brandst{\"o}tter",
booktitle = "Advances in Service and Industrial Robotics - RAAD 2022",
}