Three-axis flexible tactile sensor array for pressure and shear mapping

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Title Three-axis flexible tactile sensor array for pressure and shear mapping
Publication Type dissertation
School or College College of Engineering
Department Electrical & Computer Engineering
Author Surapaneni, Rajesh
Date 2013
Description Tactile sensors are a group of sensors that are widely being developed for transduction of touch, force and pressure in the field of robotics, contact sensing and gait analysis. These sensors are employed to measure and register interactions between contact surfaces and the surrounding environment. Since these sensors have gained usage in the field of robotics and gait analysis, there is a need for these sensors to be ultra flexible, highly reliable and capable of measuring pressure and two-axial shear simultaneously. The sensors that are currently available are not capable of achieving all the aforementioned qualities. The goal of this work is to design and develop such a flexible tactile sensor array based on a capacitive sensing scheme and we call it the flexible tactile imager (FTI). The developed design can be easily multiplexed into a high-density array of 676 multi-fingered capacitors that are capable of measuring pressure and two-axial shear simultaneously while maintaining sensor flexibility and reliability. The sensitivity of normal and shear stress for the FTI are 0.74/MPa and 79.5/GPa, respectively, and the resolvable displacement and velocity are as low as 60 µm and 100 µm/s, respectively. The developed FTI demonstrates the ability to detect pressure and shear contours of objects rolling on top of it and capability to measure microdisplacement and microvelocities that are desirable during gait analysis.
Type Text
Publisher University of Utah
Subject Electrical engineering
Dissertation Name Doctor of Philosophy
Language eng
Rights Management (c) Rajesh Surapaneni
Format application/pdf
Format Medium application/pdf
ARK ark:/87278/s6wh7459
Setname ir_etd
ID 1419296
Reference URL https://collections.lib.utah.edu/ark:/87278/s6wh7459
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