Design of a novel six-axis force/torque sensor based on optical fibre sensing for robotic applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

  • Jun Huang
  • Chu Yan Wong
  • Wenjun Xu
  • Quan Liu
  • Zude Zhou

Colleges, School and Institutes

External organisations

  • University of Birmingham
  • Wuhan University of Technology

Abstract

Force and torque information is critical to enabling intelligent control of a robot in complex robotic applications. This paper presents a novel six-axis force/torque sensor based on optical fibre sensing for robotic applications in extreme environments with intense electromagnetic interference as well as explosive and inflammable materials. The designed sensor employs an elastic sensing element composed of 4 compliant beams and 4 elastic cross beams to convert the measured forces and torques to the strain on the surfaces of elastic cross beams, which is detected by 16 Fibre Bragg Gratings (FBGs). The strain is calculated by theoretical analysis using Timoshenko beam theory and validated by Finite Element Analysis (FEA). Working matrix of the sensor is constructed, which is associated with the relationships between the measured forces and torques and the wavelength shifts of FBGs. The sensitive coefficients obtained by theoretical analysis and FEA simulation are in good agreement, which indicates that the analytical method is accurate. The proposed six-axis force/torque sensor with low cost and high reliability has great potential in robotic applications in harsh industrial environments.

Details

Original languageEnglish
Title of host publicationICINCO 2018 - Proceedings of the 15th International Conference on Informatics in Control, Automation and Robotics
EditorsOleg Gusikhin, Kurosh Madani
Publication statusPublished - 1 Jan 2018
Event15th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2018 - Porto, Portugal
Duration: 29 Jul 201831 Jul 2018

Publication series

NameICINCO 2018 - Proceedings of the 15th International Conference on Informatics in Control, Automation and Robotics
Volume1

Conference

Conference15th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2018
Country/TerritoryPortugal
CityPorto
Period29/07/1831/07/18

Keywords

  • Fibre Bragg Grating (FBG), Optical Fibre Sensing, Robotic Application, Six-Axis Force/Torque Sensor