This study aims to develop a force sensor system with a pressure-sensitive conductive rubber (PSCR), which shows the decrease of electrical resistance when pressure is applied. The biggest obstacle of the sensor is a poor reproducibility in the characteristic between the force and the resistance of the PSCR, which derived from a hysteresis and time variant properties. In this paper, we propose one method for recognizing a magnitude of the force to the PSCR using frequency tables. The validity of the proposed method is confirmed on the basis of experimental results.
References
[1]
Lee, M.H. and Nicholls, H.R. (1999) Review Article Tactile Sensing for Mechatronics—A State of the Art Survey. Mechatronics, 9, 1-31.
https://doi.org/10.1016/S0957-4158(98)00045-2
[2]
Li, A., Hsu, P. and Sastry, S. (1989) Grasping and Coordinated Manipulation by a Multifingered Robot Hand. International Journal of Robotics Research, 8, 33-50.
https://doi.org/10.1177/027836498900800402
[3]
Berger, A.D. and Khosla, P.K. (1991) Using Tactile Data for Real-Time Feedback. International Journal of Robotics Research, 10, 88-102.
https://doi.org/10.1177/027836499101000202
[4]
Schmidt, P.A., Mael, E. and Wurtz, R.P. (2006) A Sensor for Dynamic Tactile Information with Applications in Human-Robot Interaction & Object Exploration. Robotics and Autonomous Systems, 54, 1005-1014.
https://doi.org/10.1016/j.robot.2006.05.013
[5]
Ohmukai, M., Kami, Y. and Matsuura, R. (2012) Electrode for Force Sensor of Conductive Rubber. Journal of Sensor Technology, 2, 127-131.
https://doi.org/10.4236/jst.2012.23018
[6]
Ohmukai, M., Kami, Y. and Ashida, K. (2013) Conducting Rubber Force Sensor: Transient Characteristics and Radiation Heating Effect. Journal of Sensor Technology, 3, 36-41. https://doi.org/10.4236/jst.2013.33007
[7]
Ohmukai, M. and Kami, Y. (2016) A Sputtering Deposition of Al Enhances the Output Reproducibility in a Conducting Rubber Force Sensor. Journal of Sensor Technology, 6, 46-55. https://doi.org/10.4236/jst.2016.63004
[8]
Ohmukai, M., Kami, Y. and Yawata, R. (2016) Stacked Structure Improves Output Reproducibility of Rubber Force Sensor. Journal of Sensor Technology, 6, 75-80.
https://doi.org/10.4236/jst.2016.63006