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JRM Vol.21 No.2 pp. 200-208
doi: 10.20965/jrm.2009.p0200
(2009)

Paper:

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High Speed and High Sensitivity Slip Sensor Utilizing Characteristics of Conductive Rubber - Relationship Between Shear Deformation of Conductive Rubber and Resistance Change -

Seiichi Teshigawara*, Kenjiro Tadakuma*, Aiguo Ming*,
Masatoshi Ishikawa**, and Makoto Shimojo*

*Department of Mechanical Engineering and Intelligent Systems, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan

**Department of Mathematical Engineering and Information Physics, Faculty of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

Received:
October 20, 2008
Accepted:
January 17, 2009
Published:
April 20, 2009
Creative Commons License
Keywords:
slip detection, pressure conductive rubber, tactile sensor
Abstract
Humans can grasp an object without information such as a coefficient of friction or weight. To implement this grasping motion with the robot hand, sensors have been proposed that detect an incipient slip within the contact surface or stick-slip. A large number of slip sensors have been proposed, but small, flexible, and practical slip sensors are currently not available yet. We have been involved in research and development activities for a center of pressure (CoP) tactile sensor that is small and flexible. This sensor uses a pressure conductive rubber to detect the central position of the load distribution and total load. As a result of using the sensor to make experiments on slip detection, we found that a peculiar change appeared in the load output of the sensor immediately before the slip displacement of an object occurred. Based on this output change, we proposed a control method that was capable of setting a grasping force in accordance with the weight of an object. However, the principle was not made clear that caused the output change to occur. We hypothesized that the change was caused by the characteristics of the pressure conductive rubber used for the material of the sensor. As a result of making verification experiments based on this hypothesis, we found that the output change was due to a change in the resistance value when the pressure conductive rubber shear deformed. It was also found that the scale of a change in the resistance value was dependent largely upon the shear deformation speed of the pressure conductive rubber. This paper describes the principle that a peculiar change occurs in the CoP sensor immediately before the occurrence of an object slip. It also reports the characteristics of the pressure conductive rubber that have newly been made apparent.
Cite this article as:
S. Teshigawara, K. Tadakuma, A. Ming, M. Ishikawa, and M. Shimojo, “High Speed and High Sensitivity Slip Sensor Utilizing Characteristics of Conductive Rubber - Relationship Between Shear Deformation of Conductive Rubber and Resistance Change -,” J. Robot. Mechatron., Vol.21 No.2, pp. 200-208, 2009.
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References
  1. [1] R. S. Johansson and G. Westling, “Roles of glabrous skin receptors and sensorimotor memory in automatic control of precision grip when lifting rougher or more slippery objects,“ Exp. Brain Res., Vol.56, pp. 550-564, 1984.
  2. [2] R. S. Johansson and G. Westling, “Signals in tactile afferents from the fingers eliciting adaptive motor responses during precision grip,” Exp. Brain Res., Vol.66, pp. 141-154, 1987.
  3. [3] M. R. Trembly and M. R. Cutkosky, “Estimating Friction using Incipient Slip Sensing During a Manipulation Task,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 429-434, 1993.
  4. [4] J. S. Son, E. A. Monteverde, and R. D. Howe, “A Tactile Sensor for Localizing Transient Events in Manipulation,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 471-476, 1994.
  5. [5] T. Maeno, K. Kobayashi, and N. Yamazaki, “Relationship between Structure of Finger Tissue and Location of Tactile Receptors,” JSME Trans., Series C, Vol.63, No.607, pp. 881-888, 1997 (in Japanese).
  6. [6] Y. Koda and T. Maeno, “Grasping Force Control in Master-Slave System with Partial Slip sensor,” Proc. IEEE/RSJ Int. Conf. on Intelligent Robots and Systems, pp. 4641-4646, 2004.
  7. [7] T. Maeno, S. Hiromitu, and T. Kawai, “Control of Grasping Force by Detecting Stick/slip Distribution at the Curved Surface of an Elastic Finger,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 3895-3900, 2000.
  8. [8] A. Ikeda, Y. Kurita, J. Ueda, Y. Matsumoto, and T. Ogasawara, “Grip force control for an elastic finger using vision-based incipient slip feedback,” IEEE/RSJ Int. Conf. on Intelligent Robots and Systems, pp. 810-815, 2004.
  9. [9] D. Gunji, Y. Mizoguchi, S. Teshigawara, A. Ming, A. Namiki, M. Ishikawa, and M. Shimojo, “Grasping Force Control of Multifingered Robot Hand Based on Slip Detection Using Tactile Sensor,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 2605-2610, 2008.
  10. [10] S. Teshigawara, M. Ishikawa, and M. Shimojo, “Slip Detection with Tactile sensor -Clarification of mechanism and Influence of coating material-,” ROBOMEC2007, pp. 1A2-B09 (in Japanese).
  11. [11] M. Shimojo, “Hysteresis Characteristics of Pressure-Conductive Rubber,” JSME Trans., Vol.59, No.564, pp. 200-205, 1993 (in Japanese).
  12. [12] M. Ishikawa and M. Shimojo, “A Method for Measuring the Center Position of a Two Dimensional Distributed Load Using Pressure-Conductive Rubber,” SICE Trans., Vol.18, No.7, pp. 730-735, 1982 (in Japanese).
  13. [13] Y. Tomita, “Rheology,” CORONA PUBLISHING CO., pp. 92-94, 1975 (in Japanese).

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