Six-degree-of-freedom displacement sensing method using a diffraction grating as a cooperative target

A novel six-degree-of-freedom displacement sensing method utilizing typical features of a diffraction grating is presented. It employs a laser source, three position sensitive detectors, a circular diffraction grating, and several optical components. Six-degree-of-freedom displacement is calculated...

Full description

Saved in:
Bibliographic Details
Main Authors: Jong Ahn Kim, Kyung-Chan Kim, Eui Won Bae, Soohyun Kirn, Yoon Keun Kwak
Format: Conference Proceeding
Language:English
Subjects:
Detectors
Diffraction gratings
Displacement measurement
Inverse problems
Kinematics
Mechanical engineering
Optical crosstalk
Optical diffraction
Optical sensors
Optical surface waves
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel six-degree-of-freedom displacement sensing method utilizing typical features of a diffraction grating is presented. It employs a laser source, three position sensitive detectors, a circular diffraction grating, and several optical components. Six-degree-of-freedom displacement is calculated from the coordinates of diffracted rays on the detectors. A forward and an inverse problem were solved to compute the full pose of an object through kinematic analysis. Experimental results show maximum full scale error of less than 0.5% for translation and 0.6% for rotation.
ISSN:1091-5281
DOI:10.1109/IMTC.2000.848804