Real-time measurement of the three-axis contact force distribution using a flexible capacitive polymer tactile sensor
dc.contributor.author | Lee, Hyung-Kew | en_US |
dc.contributor.author | Chung, Jaehoon | en_US |
dc.contributor.author | Chang, Sun-Il | en_US |
dc.contributor.author | Yoon, Euisik | en_US |
dc.date.accessioned | 2012-04-06T20:58:24Z | |
dc.date.available | 2012-04-06T20:58:24Z | |
dc.date.issued | 2011 | en_US |
dc.identifier.citation | Lee, Hyung-Kew; Chung, Jaehoon; Chang, Sun-Il; Yoon, Euisik (2011). "Real-time measurement of the three-axis contact force distribution using a flexible capacitive polymer tactile sensor." Journal of Micromechanics and Microengineering, vol. 21, 3, 035010. <http://hdl.handle.net/2027.42/90798> | en_US |
dc.identifier.uri | http://stacks.iop.org/0960-1317/21/i=3/a=035010 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/90798 | |
dc.description.abstract | In this paper, we report real-time measurement results of various contact forces exerted on a new flexible capacitive three-axis tactile sensor array based on polydimethylsiloxane (PDMS). A unit sensor consists of two thick PDMS layers with embedded copper electrodes, a spacer layer, an insulation layer and a bump layer. There are four capacitors in a unit sensor to decompose a contact force into its normal and shear components. They are separated by a wall-type spacer to improve the mechanical response time. Four capacitors are arranged in a square form. The whole sensor is an 8 _ 8 array of unit sensors and each unit sensor responds to forces in all three axes. Measurement results show that the full-scale range of detectable force is around 0–20 mN (250 kPa) for all three axes. The estimated sensitivities of a unit sensor with the current setup are 1.3, 1.2 and 1.2%/mN for the x- , y- and z -axes, respectively. A simple mechanical model has been established to calculate each axial force component from the measured capacitance value. Normal and shear force distribution images are captured from the fabricated sensor using a real-time measurement system. The mechanical response time of a unit sensor has been estimated to be less than 160 ms. The flexibility of the sensor has also been demonstrated by operating the sensor on a curved surface of 4 mm radius of curvature. | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | Real-time measurement of the three-axis contact force distribution using a flexible capacitive polymer tactile sensor | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90798/1/0960-1317_21_3_035010.pdf | |
dc.identifier.doi | 10.1088/0960-1317-21-3-035010 | en_US |
dc.identifier.source | Journal of Micromechanics and Microengineering | en_US |
dc.owningcollname | Physics, Department of |
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