General method for determining the sensor readings of motion measurement systems by using skew-ray tracing method
Journal
Optik
Journal Volume
120
Journal Issue
6
Pages
257-264
Date Issued
2009
Author(s)
Abstract
High-accuracy laser-based optoelectronic motion- and position-measuring systems typically utilize light rays that travel from one optical boundary surface to another to perform motion and/or position measurements. It is not a simple task to accurately determine the equations of these sensor readings in terms of positional/angular motions. This problem is addressed in this paper by application of the analytic skew-ray tracing methodology as computed by the finite-difference methodology. An illustrative example of a motion-measurement system and comparison of the position-sensing detector (PSD) readings are given to validate the proposed methodology. It is shown that the proposed methodology can provide accurate expressions of PSD readings. It is also shown that the performance of a corner-cube retro-reflector is better than a cat's eye retro-reflector in positional/angular motion measurement systems. ? 2007 Elsevier GmbH. All rights reserved.
Subjects
Elementary particle sources
Finite difference method
Measurements
Optical devices
Position measurement
Power spectral density
Pulse shaping circuits
Reflection
Sensors
Boundary surfaces
Cat's eyes
Corner cubes
Finite differences
General methods
High-accuracy
Illustrative examples
Light rays
Measuring systems
Motion measurements
Motion-measurement system
Position-sensing detector
PSD
Retro reflectors
Sensor readings
Skew ray
Skew-ray tracing methods
Equations of motion
SDGs
Type
journal article