MyJournals Home  

RSS FeedsSensors, Vol. 19, Pages 4986: Development of an Image Grating Sensor for Position Measurement (Sensors)

 
 

15 november 2019 16:03:01

 
Sensors, Vol. 19, Pages 4986: Development of an Image Grating Sensor for Position Measurement (Sensors)
 


In this research paper, a precision position-measurement system based on the image grating technique is presented. The system offers a better robustness and flexibility for 1D position measurement compared to a conventional optical encoder. It is equipped with an image grating attached to a linear stage as the target feature and a line scan camera as the stationary displacement reader. By measuring the position of the specific feature in the image and applying a subpixel image registration method, the position of the linear stage can be obtained. In order to improve the computational efficiency, the calculations for pattern correlation and subpixel registration are performed in the frequency domain. An error compensation method based on a lens distortion model is investigated and implemented to improve the measurement accuracy of the proposed system. Experimental data confirms the capability of the developed image grating system as ±0.3 µm measurement accuracy within a 50 mm range and ±0.2 µm measurement accuracy within a 25 mm range. By applying different optics, the standoff distance, measurement range, and resolution can be customized to conform to different precision measurement applications.


 
179 viewsCategory: Chemistry, Physics
 
Sensors, Vol. 19, Pages 4987: Underactuated AUV Nonlinear Finite-Time Tracking Control Based on Command Filter and Disturbance Observer (Sensors)
Sensors, Vol. 19, Pages 4988: An Analytical Model for Interference Alignment in Broadcast Assisted VANETs (Sensors)
 
 
blog comments powered by Disqus


MyJournals.org
The latest issues of all your favorite science journals on one page

Username:
Password:

Register | Retrieve

Search:

Physics


Copyright © 2008 - 2024 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Nachrichten