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Tightly-coupled Data Fusion of VINS and Odometer Based on Wheel Slip Estimation

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The data fusion of a monocular visual-inertial system (VINS) and encoder measurements has proved to be significantly effective in overcoming the additional unobserv-ability of scale, when the robot is constrained to move with constant acceleration on the ground. However, the encoder measurements for positioning may become unreliable once the ground vehicle exhibits wheel slippage. As a result, extending VINS to incorporate such faulty odometer measurements directly could lead to a deterioration of the localization performance. To address this issue, we firstly present a wheeled mobile robot model that relaxes the pure rolling hypothesis for slip estimation. We then propose an adaptive strategy based on the slip estimation to combine acceptable encoder measurements with VINS. Experimental results are presented that demonstrate the reliable estimation of the wheel slip, as well as the improvement of the proposed data fusion scheme in positioning performance.

Original languageEnglish
Title of host publication2018 IEEE International Conference on Robotics and Biomimetics, ROBIO 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1613-1619
Number of pages7
ISBN (Electronic)9781728103761
DOIs
StatePublished - 2 Jul 2018
Event2018 IEEE International Conference on Robotics and Biomimetics, ROBIO 2018 - Kuala Lumpur, Malaysia
Duration: 12 Dec 201815 Dec 2018

Publication series

Name2018 IEEE International Conference on Robotics and Biomimetics, ROBIO 2018

Conference

Conference2018 IEEE International Conference on Robotics and Biomimetics, ROBIO 2018
Country/TerritoryMalaysia
CityKuala Lumpur
Period12/12/1815/12/18

Keywords

  • data fusion
  • localization
  • slip estimation
  • visual-inertial system (VINS)

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