A new haptic device for applications in virtual reality and humanoid robotics

Authors:
Michele Folgheraiter;Giuseppina Gini;Dario L. Vercesi
Affiliations:
Politecnico di Milano, DEI Electronic and Information Department, Piazza Leonardo Da Vinci 32, Milan, Italy. E-mail: {folghera, gini, dario}@blocconote.it;Politecnico di Milano, DEI Electronic and Information Department, Piazza Leonardo Da Vinci 32, Milan, Italy. E-mail: {folghera, gini, dario}@blocconote.it;Politecnico di Milano, DEI Electronic and Information Department, Piazza Leonardo Da Vinci 32, Milan, Italy. E-mail: {folghera, gini, dario}@blocconote.it
Venue:
Integrated Computer-Aided Engineering - Informatics in Control, Automation and Robotics
Year:
2006

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Abstract

This paper presents an innovative haptic interface that allows to simulate a generic touch sensation thanks to the integration of an electro-cutaneous device and a force-feedback system. After investigating different levels of interaction with the human perceiving system, with the main goal to implement a virtual reality device with high sense rendering capabilities, we developed a special glove. It is controlled with a TENS (Transcutaneous Electric Nerve Stimulation) board that enables electro-cutaneous stimulation on the user fingertip, and a force-feedback system that restricts the user finger movements. To integrate the visual with the touch sensation, we created a 3D virtual model of the environment which is synchronized with the user movements. The user wears the glove and explores the virtual object via a sequence of interactions with it. We conducted different kinds of experiments to find the best pattern of cutaneous stimulations. Then we introduced the visual and force-feedback modalities and evaluated the psychophysical effects of the combination of touch, force and visual feedbacks. We also found that it is possible to generate two kinds of haptic sensations, the beat and the vibration, with appropriate settings of signal amplitude, duty cycle and frequencies.