Loading...
Please wait, while we are loading the content...
Similar Documents
Solar tracking system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | White, P. R. |
| Copyright Year | 1981 |
| Description | A solar tracker for a solar collector is described in detail. The collector is angularly oriented by a motor wherein the outputs of two side-by-side photodetectors are discriminated as to three ranges: a first corresponding to a low light or darkness condition; a second corresponding to light intensity lying in an intermediate range; and a third corresponding to light above an intermediate range, direct sunlight. The first output drives the motor to a selected maximum easterly angular position; the second enables the motor to be driven westerly at the Earth rotational rate; and the third output, the separate outputs of the two photodetectors, differentially controls the direction of rotation of the motor to effect actual tracking of the Sun. |
| File Size | 549401 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810015985 |
| Archival Resource Key | ark:/13960/t73v4d341 |
| Language | English |
| Publisher Date | 1981-04-14 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Solar Sensors Pointing Control Systems Optical Tracking Heliostats Circuits Insolation Photometers Solar Collectors Solar Position Electric Motors Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
