Deviation Analysis Based on Four-Quadrant Detector for Sun-Tracking

Abstract

Abstract:

To realize the automatic sun-tracking based on four-quadrant detector, the working principle of four-quadrant detector is firstly analyzed, and the reason of selecting four-quadrant detector is explained. The setup based on four-quadrant detector for sun-tracking is introduced, the possibility of deviation influence, such as geometry position of the sun spot, installation position between aperture iris and four-quadrant detector is deeply investigated, the consistency between four-quadrant detector and its I-V conversion circuit is analyzed , and the influence of consistency on tracking precision is evaluated. The reason and rationality of deviation existence on four-quadrant detector voltage for sun-tracking are introduced. The experiment demonstrated that the designed device based on four-quadrant detector is suitable for high-precision sun-tracking.

Key words: four-quadrant detector, sun-tracking, spot, consistency analysis

CLC Number:

TK513.4

LIU En-Chao, WU Hao-Yu, ZOU Peng. Deviation Analysis Based on Four-Quadrant Detector for Sun-Tracking[J]. Journal of Atmospheric and Environmental Optics, 2012, (2): 139-146.

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Deviation Analysis Based on Four-Quadrant Detector for Sun-Tracking

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