• DocumentCode
    1406790
  • Title

    Fault tolerance for kinematically redundant manipulators: anticipating free-swinging joint failures

  • Author

    English, James D. ; Maciejewski, Anthony A.

  • Author_Institution
    Raytheon Syst. Co., Tucson, AZ, USA
  • Volume
    14
  • Issue
    4
  • fYear
    1998
  • fDate
    8/1/1998 12:00:00 AM
  • Firstpage
    566
  • Lastpage
    575
  • Abstract
    Fault tolerance is an important design criterion for robotic systems operating in hazardous or remote environments. This article addresses the issue of tolerating a free-swinging joint failure by focusing on how to best configure a slow-moving manipulator before a failure. Three scalar measures of fault susceptibility are defined using joint torques/forces, accelerations, and swing angles. Minimizing these measures is an approach to achieving fault tolerance, and for this, algorithms to calculate their gradients are also given. The formulas are valid for general n-link manipulators
  • Keywords
    failure analysis; manipulator kinematics; minimisation; probability; redundancy; fault susceptibility; fault tolerance; free-swinging failure; gradients; joint failure; kinematic redundancy; minimisation; probability; redundant manipulators; Acceleration; Fault tolerance; Fault tolerant systems; Force measurement; Goniometers; Kinematics; Manipulators; Redundancy; Robots; Torque measurement;
  • fLanguage
    English
  • Journal_Title
    Robotics and Automation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1042-296X
  • Type

    jour

  • DOI
    10.1109/70.704223
  • Filename
    704223