A proposal of hand/eye-vergence dual visual servoing for enhancing trackability

Mamoru Minami, Fujia Yu, Akira Yanou

Research output: Contribution to journalArticle

Abstract

Visual servoing with a hand-eye configuration tends to be vulnerable for hand's dynamical oscillations, since nonlinear dynamical effects of whole manipulator and dynamical coupling among actuating joints stand against tracking ability-abbreviated here as trackability, i.e. a performance to keep a target object projected at the center of camera's view while the target moves. A proposal to achieve high trackability is that visual servoing of the hand and the camera be separately controlled independently by decoupling each other, and such controlling method is proposed in this paper. The effectiveness of the decoupled hand and eye-vergence visual servoing method has been evaluated through simulations incorporated with actual dynamics of 7-DoF robot with additional 3-DoF eye-vergence mechanism, where the stability of closed loop dynamics has been verified by Lyapunov analysis.

Original languageEnglish
Pages (from-to)1990-2003
Number of pages14
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume79
Issue number802
DOIs
Publication statusPublished - Jul 15 2013

Keywords

  • Eye-vergence
  • Lyapunov analysis
  • Nonlinear dynamics
  • Trackability
  • Visual servoing

ASJC Scopus subject areas

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

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