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In this paper, we present the design of a new fMRI compatible haptic interface with 3DOFs, based on electrical DC actuation, for the study of brain mechanisms of human motor control. In order to evaluate the validity of the proposed solution, we performed some preliminary experiments with a single degree of freedom device to test the compatibility with the fMRI environment. The 1DOF design was extended...
In this paper, a new parallel link mechanism ldquoDELTA-4rdquo is developed as a new haptic device within a high quality force display capability and operability. DELTA-4 realizes 3 DOF of translational motions by a new redundant parallel link mechanism. The name of the mechanism DELTA-4 is derived from a conventional parallel link mechanism ldquoDELTArdquo, because there are several common points...
This paper presents a new design of haptic device which combines the spherical parallel structure with the serial link configuration. The spherical configuration offers 3DOF for the positioning its platform where a 3DOF serial link is connected. The moving platform is connected to the ground through a passive and active spherical joint configuration. As such, the passive joint can contribute in supporting...
In this paper it is shown how variation of the kinematic structure of an exoskeleton and variation of its fixation strength on the human limb influences objective task performance metrics, such as interface load, tracking error and voluntary range of motion in a signal tracking experiment.
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