04367403 is referenced by 100 patents and cites 2 patents.

A solar array positioning system includes first light sensor means facing the same direction as the solar array and second light sensor means facing the opposite direction. A third sensor, this one responsive to gravity, is employed to indicate the direction about a diurnal slew axis that the array is tilted. These sensors are employed to determine the initial array slewing direction to insure that during slewing and subsequent tracking, the array never is rotated through more than a given angle, less than 360.degree., between two fixed limits. This permits connection to the array by hard wiring rather than slip rings. The system includes also fourth sensor means for providing fine tracking signals which assume control of the array position during tracking. A vane structure reduces the sensitivity of various of the sensors to obscuration by foreign particles. A low cost uncorrected lens may be used with the fourth.

Title
Array positioning system with out-of-focus solar cells
Application Number
113506
Publication Number
4367403
Application Date
August 11, 1981
Publication Date
January 4, 1983
Inventor
Arthur Miller
Princeton Junction
NJ, US
Agent
William Squire
Samuel Cohen
Assignee
RCA Corporation
NY, US
IPC
G01J 1/20
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