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Energy and Power ProductionElectric Power Production and Distribution

Wave Front Sensor for Solar Concentrator Control

Authors: Joseph N. Beasley; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
Abstract:
This article is the culmination of research directed into finding a system to control the position of the focal spot of paraboloid concentrators for use in terrestrial and space solar concentration applications. After a brief introduction into the area of study, the article describes how a normal Shack-Hartmann wavefront sensor is modified for use in detecting and tracking the focal spot. The first experiment describes how the wavefront sensor is to be utilized in a solar application and shows the adjustment from lenslets to cylindrical mirrors on a thruster. Next, the paper details the analysis and development of the algorithms used in locating the focal spot on a thruster absorber utilizing a correlation method and an area centroid method. The article concludes with a paragraph on suitable future work.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Journal article (preprint)
Pages: 64
Report Date: 31 AUG 2006
Report Number: A567764
Keywords relating to this report:
*DETECTORS
*SOLAR ENERGY
*WAVEFRONTS
ALGORITHMS
CONCENTRATION_CHEMISTRY_
CONTROL SYSTEMS
CYLINDRICAL BODIES
MIRRORS
SOLAR SATELLITES
SPACE PROPULSION
SPACECRAFT
THERMAL PROPULSION SYSTEMS
THRUSTERS
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