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Stability and Transparency Analysis of a Teleoperation Chain For Microscale Interaction.

Abstract : Microscale teleoperation with haptic feedback requires scaling gains in the order of 104 107. These high gains impose a trade-off between stability and transparency. Due to the conservative approach used in most designs, transparency is reduced since damping is added to the system to guarantee stability. Starting from the fact that series, negative feedback and parallel connection of passive systems is a passive system, a new approach is addressed in this work. We propose here a complete teleoperation chain designed from the ground up for full transparency and stability, including a novel self-sensing probe and a high fidelity force-feedback haptic interface. By guaranteeing the passivity of each device and assuming that the human operator and the environment are passive systems, a homothetic direct coupling can be used without jeopardizing the stability and provides best transparency. The system is experimentally demonstrated in the complex case of a probe interacting with a water droplet under human control, while accurately transcribing the interaction back to operator.
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A. Mohand Ousaid, Aude Bolopion, Sinan Haliyo, Stéphane Régnier, Vincent Hayward. Stability and Transparency Analysis of a Teleoperation Chain For Microscale Interaction.. 2014 IEEE International Conference on Robotics and Automation (ICRA 2014), May 2014, Hong Kong, China. pp.5946-5951, ⟨10.1109/ICRA.2014.6907735⟩. ⟨hal-01313511⟩

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