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A dynamic tactile sensor on photoelastic effect

A dynamic tactile sensor on photoelastic effect
A dynamic tactile sensor on photoelastic effect
Certain photoelastic materials exhibit birefringent characteristics at a very low level of strain. This property of material may be suitable for dynamic or wave propagation studies, which can be exploited for designing tactile sensors. This paper presents the design, construction and testing of a novel dynamic sensor based on photoelastic effect, which is capable of detecting object slip as well as providing normal force information. The paper investigates the mechanics of object slip, and develops an approximate model of the sensor. This allows visualization of various parameters involved in the sensor design. The model also explains design improvements necessary to obtain continuous signal during object slip. The developed sensor has been compared with other existing sensors and experimental results from the sensor have been discussed. The sensor is calibrated for normal force which is in addition to the dynamic signal that it provides from the same contact location. The sensor has a simple design and is of a small size allowing it to be incorporated into robotic fingers, and it provides output signals which are largely unaffected by external disturbances.
0924-4247
217-225
Dubey, Venketesh
387e1652-7e2d-4b25-9541-d17b684170a2
Crowder, Richard
ddeb646d-cc9e-487b-bd84-e1726d3ac023
Dubey, Venketesh
387e1652-7e2d-4b25-9541-d17b684170a2
Crowder, Richard
ddeb646d-cc9e-487b-bd84-e1726d3ac023

Dubey, Venketesh and Crowder, Richard (2006) A dynamic tactile sensor on photoelastic effect. Sensors and Actuators A: Physical, 128 (2), 217-225.

Record type: Article

Abstract

Certain photoelastic materials exhibit birefringent characteristics at a very low level of strain. This property of material may be suitable for dynamic or wave propagation studies, which can be exploited for designing tactile sensors. This paper presents the design, construction and testing of a novel dynamic sensor based on photoelastic effect, which is capable of detecting object slip as well as providing normal force information. The paper investigates the mechanics of object slip, and develops an approximate model of the sensor. This allows visualization of various parameters involved in the sensor design. The model also explains design improvements necessary to obtain continuous signal during object slip. The developed sensor has been compared with other existing sensors and experimental results from the sensor have been discussed. The sensor is calibrated for normal force which is in addition to the dynamic signal that it provides from the same contact location. The sensor has a simple design and is of a small size allowing it to be incorporated into robotic fingers, and it provides output signals which are largely unaffected by external disturbances.

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More information

Published date: April 2006
Organisations: Agents, Interactions & Complexity

Identifiers

Local EPrints ID: 262558
URI: https://eprints.soton.ac.uk/id/eprint/262558
ISSN: 0924-4247
PURE UUID: 05d2e9ec-438b-4748-92ad-b7e1a589945f

Catalogue record

Date deposited: 11 May 2006
Last modified: 18 Jul 2017 08:50

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Contributors

Author: Venketesh Dubey
Author: Richard Crowder

University divisions

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