Inverse Dynamics Compensation Method for PWS Mobile Manipulators

Mamoru Minami, Toshiyuki Asakura, Naofumi Fujiwara, Katsuhiro Kanbara

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A robot system composed of a mobile robot and a manipulator is called a "mobile manipulator". In this paper a calculation method of inverse dynamics compensation for a power-wheeled-steering (PWS) mobile manipulator is proposed. Newton-Euler method is used for the compensation calculation. A mobile manipulator differs from a floor-fixed manipulator in that it moves according to non-holonomic constraints. As the constraints integrate velocity and angular velocity errors of the mobile manipulator on a floor, the errors influence the hand position and orientation of the mounted manipulator. The integrated errors do not disappear even after the dynamical vibration of the mobile manipulator is settled. Therefore, to reduce the integrated errors, the velocity errors of the mobile manipulator should be reduced. We propose a calculation method, and the effects of the method are confirmed by simulation experiments.

Original languageEnglish
Pages (from-to)291-298
Number of pages8
JournalJSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing
Volume40
Issue number2
DOIs
Publication statusPublished - Jun 1997
Externally publishedYes

Keywords

  • Inverse Dynamics
  • Mobile Manipulator
  • Moving Robot
  • Nonlinear Control

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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