Dubey, V. N. and Crowder, R. M., 2006. A dynamic tactile sensor on photoelastic effect. Sensors and Actuators A: Physical, 128 (2), pp. 217-224.
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Official URL: http://www.sciencedirect.com/science?_ob=ArticleUR...
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.
|Uncontrolled Keywords:||Dynamic sensor, slip sensor, photoelastic sensor, shear sensing|
|Subjects:||Technology > Engineering > Electrical and Electronic Engineering|
|Group:||School of Design, Engineering & Computing > Smart Technology Research Centre|
|Deposited By:||INVALID USER|
|Deposited On:||25 Apr 2007|
|Last Modified:||07 Mar 2013 14:35|
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