Development of a Flexible Artificial Hand System Equipped with a Slip Sensor

Akio Gofuku, Yutaka Tanaka, Junji Tsuboi

Research output: Contribution to journalArticle

Abstract

This study develops a flexible artificial hand system with slip sensors. The artificial hand is composed of four flexible actuators. Two pairs of two opposite actuators are driven by the independent air pressure sources each. In each pair, one of opposite pair of actuators is equipped with a slip sensor. The slip sensor is composed of a photo reflector and a conductive rubber sensitive to load force. The contact of the hand to an object is detected by the change of resistance of the conductive rubber. After the detection of touch, the slip velocity is measured by calculating the cross-correlation function of the output voltage waveforms of two photo transistors in the photo reflector. The grasping force of the hand is increased according to the measured slip velocity. The calculation of the crosscorrelation function and the generation of control signals are made in a host personal computer. From the experimental results of holding several objects, the hand system is proved to grasp suitably the object whose weight is previously unknown.

Original languageEnglish
Pages (from-to)1907-1914
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume65
Issue number633
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Actuator
  • Artificial Hand
  • Measurement and Control
  • Mechatronics and Robotics
  • Photo Reflector
  • Sensor
  • Slip Sense

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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