Fault Tolerant Gait Planning for a Hexapod Robot with Multiple Locked Joint Failures

Jung Min Yang, Kwang Hyun Shim

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

Abstract

Fault tolerance in walking of a hexapod robot is addressed in this paper. The considered failure is a locked joint failure, one for which a joint cannot move and is locked in place. If a failed joint is locked, the workspace of the resulting leg is constrained, but legged robots have fault tolerance capability to continue walking maintaining static stability. In the previous results [1], a strategy for fault tolerant gaits was proposed and a periodic gait was derived for forward walking of a quadruped robot. In this paper, we focus on planning fault tolerant gaits for a hexapod robot. Since a hexapod robot has two more legs than a quadruped robot, it has the advantage in fault tolerance capability; especially it can tolerate simultaneous failures at two legs. The leg sequence and the formula of the stride length are analytically driven based on gait study and robot kinematics. The adjustment procedure from a normal gait to the proposed fault tolerant gait is shown to demonstrate the applicability of the proposed scheme.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Machine Learning; Models, Technologies and Applications, MLMTA 03
EditorsH.R. Arabnia, E.B. Kozerenko
Pages44-45
Number of pages2
StatePublished - 2003
EventProceedings of the International Conference on Machine Learning; Models, Technologies and Applications, MLMTA'03 - Las Vegas, NV, United States
Duration: 23 Jun 200326 Jun 2003

Publication series

NameProceedings of the International Conference on Machine Learning; Models, Technologies and Applications

Conference

ConferenceProceedings of the International Conference on Machine Learning; Models, Technologies and Applications, MLMTA'03
Country/TerritoryUnited States
CityLas Vegas, NV
Period23/06/0326/06/03

Keywords

  • Fault tolerance
  • Gait study
  • Hexapod robots
  • Locked joint failures
  • Multiple failures

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