Array positioning system

Details Array positioning system Array positioning system

1980-01-21

1982-02-09

O'Connor, Daniel J.

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

250203R, 353 3, F24J 302, G01J 120, G03B 2100

Patent

active

043145469

ABSTRACT:
A solar array positioning system includes first light sensor means facing the same direction as the solar array and second light sensor mean 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.

REFERENCES:
patent: Re25242 (1962-09-01), Toulmin
patent: 2135997 (1938-11-01), Arthuys
patent: 3986021 (1976-10-01), Hitchcock
patent: 4041307 (1977-08-01), Napoli
patent: 4082947 (1978-04-01), Haywood et al.
patent: 4151408 (1979-04-01), Brown
patent: 4187834 (1980-02-01), Hoinski
patent: 4194492 (1980-03-01), Tremblay
patent: 4198954 (1980-04-01), Meijer
patent: 4211212 (1980-07-01), Braun
patent: 4235222 (1980-11-01), Ionescu

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