This paper proposes a novel method for hand-gesture recognition based on finger state projection, called FSP Method, which is used to control robotic hands. The control system using FSP Method can simplify the control process of robotic hand considerately while avoiding the drawbacks of traditional hand-gesture recognition methods. The FSP Method measures the projection length of fingers throug...

This paper presents a model for solving the problem of real-time neural estimation of stiffness characteristics for unknown objects. For that, an original neural architecture is proposed for a large scale robotic grasping systems applied for unknown object with unspecified stiffness characteristics. The force acquisition is based on tactile information from force sensors in robotic manipulator....

We have developed a robotic interface to train hand and finger function. HandCARE is a Cable-Actuated REhabilitation system, in which each finger is attached to an instrumented cable loop allowing force control and a predominantly linear displacement. The device, whose designed is based on biomechanical measurements, can assist the subject in opening and closing movements and can be adapted to ...

This document presents a mathematical model of the states of a three-fingered robotic hand (Robotiq 3-Finger Adaptive Gripper) in quasistatic equilibrium with and without contact with an object. The mechanical coupling and the breakaway mechanism of the under-actuated robotic hand as well as its contact with the object are modeled as a hybrid system which is suitable for use for simulation, whi...

In this paper, an overall description of the design of a robotic hand is discussed, with particular attention to the required sensory subsystem, its integration within the mechanical structure of the hand and the required control architecture. Different solutions for the joint configuration and the structure of the tendon network adopted for the transmission system are present together with thr...

This paper presents a methodology to perform a fine manipulation task with an anthropomorphic hand. We focus here on a three-finger precision grasp. The robotic hand used is the latest four finger fully actuated hand developed by the RoBioSS team of PPRIME institute. Different steps ranging from the generation of the contact points of the hand with the object to the experimental realization of ...

This paper investigates integrating non-assembly three-dimensional (3D)-printed joints and soft robotic muscles in order to make a tendon-driven finger. A finger-type structure actuated by electro-thermal actuator mechanism is introduced, including bio-inspired 3D-printed compliant joint. As an affordable but high-performance component, twisted coiled polymer (TCP) used drive the system as actu...

In this paper, we present a robotic actuation system using an artificial muscle actuator based on a dielectric elastomer. A novel linear actuator called a ‘multi-stacked actuator’ is proposed that can be embedded in the phalanges of a multi-jointed robot finger. This actuator ensures a compact design of the overall system. As an example, a 2-d.o.f. robot finger is developed and its performance ...

Robotic assistant-based therapy holds great promise to improve the functional recovery of stroke survivors. Numerous neural-machine interface techniques have been used to decode the intended movement to control robotic systems for rehabilitation therapies. In this case report, we tested the feasibility of estimating finger extensor muscle forces of a stroke survivor, based on the decoded descen...

Due to the growing demand for assistance in rehabilitation therapies for hand movements, a robotic system is proposed to mobilize the hand fingers in flexion and extension exercises. The robotic system is composed by four, type slider-crank, mechanisms that have the ability to fit the user fingers length from the index to the little finger, through the adjustment of only one link for each mecha...