Journal ArticleDOI
Significance of observation strategy on the design of robot calibration experiments
Morris Driels,Uday S. Pathre +1 more
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TLDR
The factors influencing the identification and observability of kinematic parameters during robot calibration include initial estimates of parameters, measurement accuracy and noise, encoder resolution and uncertainty, selection of measurement configurations, number of measurements, and range of motion of the joints during observations.Abstract:
This article examines the factors influencing the identification and observability of kinematic parameters during robot calibration. A generalized calibration experiment has been simulated using two different identification techniques. Details of the identification techniques and considerations for implementing them using standard IMSL routines are presented. The factors considered during the simulations include: initial estimates of parameters, measurement accuracy and noise, encoder resolution and uncertainty, selection of measurement configurations, number of measurements, and range of motion of the joints during observations. Results are tabulated for the various cases and suggestions are made for the design of robot calibration experiments.read more
Citations
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Journal ArticleDOI
The calibration index and taxonomy for robot kinematic calibration methods
TL;DR: A calibration index is in troduced, based on the mobility equation, that considers sensed and unsensed joints and single and multiple loops and ex presses the surplus of measurements over degrees of freedom at each pose.
Journal ArticleDOI
A systematic technique to estimate positioning errors for robot accuracy improvement using laser interferometry based sensing
Gursel Alici,Bijan Shirinzadeh +1 more
TL;DR: The principal conclusion is that the approach of estimating position errors with some analytical functions is practical and generic, and most importantly it is effective enough to improve robot accuracy.
Journal ArticleDOI
An implicit loop method for kinematic calibration and its application to closed-chain mechanisms
TL;DR: A unified formulation for the calibration of both serial-link robots and robotic mechanisms having kinematic closed-loops is presented and applied experimentally to two 6-degree-of-freedom devices: the RSI 6-DOF hand controller and the MEL "modified Stewart platform".
Journal ArticleDOI
Robot calibration using a 3D vision-based measurement system with a single camera
TL;DR: In this article, a 3D vision-based measurement system is proposed to improve the accuracy of robot calibration using a single CCD camera mounted on the robot tool flange to measure the robot end-effector pose relative to a world coordinate system.
Proceedings ArticleDOI
Observability index selection for robot calibration
Yu Sun,John M. Hollerbach +1 more
TL;DR: This paper relates 5 observability indexes for robot calibration to the "alphabet optimalities" from the experimental design literature and proves that G-optimality is equivalent to E- Optimality for exact design.
References
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Journal ArticleDOI
A Kinematic Notation for Lower-Pair Mechanisms Based on Matrices
J. Denavit,R. S. Hartenberg +1 more
Proceedings ArticleDOI
Robot arm geometric link parameter estimation
TL;DR: A general method for estimating serial link manipulator geometric parameter errors is proposed and may be increased significantly by updating the nominal link parameters in the control software to represent the physical system more accurately.
Journal ArticleDOI
Industrial Robot Forward Calibration Method and Results
TL;DR: Methode d'etalonnage d'un robot industriel and resultats (les coordonnees de l'outil sont obtenues a partir des valeurs des codeurs situes aux articulations) as mentioned in this paper