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Adaption of the Inverse Kinematics of the DLR Light Weight Robot for Its Use as Haptic Device

Wu, Zhongyang (2007) Adaption of the Inverse Kinematics of the DLR Light Weight Robot for Its Use as Haptic Device. Master's. DLR-Interner Bericht. DLR-IB 515-2007/37.

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Abstract

Haptic devices play an important role in haptic applications. Light Weight Robot III is the latest version of DLR light weight robot. It has seven Degree of Freedom (DoF) with only 14 kg self weight. Seven torque sensors mounted on its joints and one 6 DoF force-torque sensor on the end-effector enable it to precisely general model a Light Weight Robot III, which is slightly different from the one used as haptic device. This thesis is intended to adapt and optimize this inverse kinematics library for the haptic apllications of Light Weight Robot III. It describes the adaption of the inverse kinematics library to the hardware, which conquered the problems caused by the different configuration of the robot used as haptic device. It realized the null space movement of the robot, which enables the position changing of the intermediate joints due to applied force on it. At last it gives a solution for detecting and avoiding the singular configurations of the robot, which is especial important due to unpredictable trajectory of the end-effector. The simulation and experiment results of improved kinematics library are also shown in this thesis.

Document Type:Monograph (DLR-Interner Bericht, Master's)
Title:Adaption of the Inverse Kinematics of the DLR Light Weight Robot for Its Use as Haptic Device
Authors:
AuthorsInstitution or Email of Authors
Wu, ZhongyangJulius-Maximilians-Universität Würzburg
Date:4 November 2007
Status:Published
Keywords:Adaption, Kinematics, Light-Weight-Robot III, Haptic Device, 6DoF, force-torque sensor
Department:Lehrstuhl für Informatik VII
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):W - Vorhaben DLR-Leichtbau-Roboter III (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > Robotic Systems
Deposited By: Jessica Laskey
Deposited On:03 Dec 2007
Last Modified:27 Apr 2009 14:29

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