A linear-quadratic optimal control problem is considered for the infinite-dimensional model of a one-link flexible arm. Two boundary inputs are assumed to be available, namely the joint torque at the link base and a transverse force at the tip of the link. The problem is formulated and solved using...
Robot Control
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A nonlinear observer is presented for the estimation of the joint velocities and of the deformation modes and their rates for a two-link flexible robot arm, using only motor encoders and a tip position sensor. The state observer can be used then for trajectory tracking control. By monitoring the...
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We propose a new approach for executing the main Cartesian tasks assigned to a redundant robot while guaranteeing whole-body collision avoidance. The robot degrees of freedom are fully utilized by introducing relaxed constraints in the definition of operational and collision...
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A control system based on multiple sensors is proposed for the safe collaboration of a robot with a human. New constrained and contactless human-robot coordinated motion tasks are defined to control the robot end-effector so as to maintain a desired relative position to the human head while...
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Performing precise, repetitive motions is essential in many robotic and automation systems. Iterative learning con- trol (ILC) allows determining the necessary control command by using a very rough system model to speed up the process. Functional iterative learning control is a novel technique that...
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Soft robots are intrinsically underactuated mechanical systems that operate under uncertainties and disturbances. In these conditions, this letter proposes two versions of PID-like control laws with a saturated integral action for the particularly challenging shape regulation task. The closed-loop...
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In physical human-robot interaction (pHRI) it is essential to reliably estimate and localize contact forces between the robot and the environment. In this paper, a complete contact detection, isolation, and reaction scheme is presented and tested on a new 6-dof industrial collaborative robot. We...
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As part of the 2023 course program of the European Embedded Control Institute (EECI), http://www.eeci-igsc.eu, the International Graduate School on Control of Soft...
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TITLE: Putting energy and geometry back in robotics
ABSTRACT: Whether fixed to the ground, moving in a room, swimming in water, or flying in air, robots inherently interact with their environment in a bilateral manner. From a system theoretic... -
Abstract
Wandercraft is a french Paris-based company developing Atalante, an advanced lower-limb medical exoskeleton enabling wheelchair users to walk on their own legs once again, certified as a medical device and commercially sold in the EU and in...