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Analysis of Static and Dynamic Characteristics of a Tactile Sensor using Carbon Micro Coil inside an Elastic Material

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4 Author(s)
Homma, M. ; Dept. of Mech. Eng., Keio Univ., Yokohama ; Konyo, M. ; Maeno, T. ; Motojima, Seiji

Carbon micro coil (CMC) tactile sensor, containing CMCs in elastic material, is considered to have LCR circuit. When the sensor is transformed by mechanical force, LCR circuit changes in the sensor. In consequence, the sensor is able to detect various kind of tactile information by measuring impedance. In this paper, we focused on LCR circuit formed by distribution of CMCs. By changing CMC weight percent, we made the sensors in which CMCs are in contact and not in contact. First, we analyzed static characteristics of CMC tactile sensor. When the sensor is under unloaded condition, we measured the relationship between frequency of alternating voltage and impedance. As the result, we found that electrical parameters change with CMC weight percent. When the sensor is under transformed condition, we measured relationship between strain and impedance. As the result, we found that impedance changes by deformation of CMC and change in distance between CMCs. Secondly, we analyzed dynamic characteristics of CMC tactile sensor. We measured relationship between mechanical frequency and impedance by exciting vibration on CMC tactile sensor

Published in:

Intelligent Robots and Systems, 2006 IEEE/RSJ International Conference on

Date of Conference:

Oct. 2006