| 摘要 |
A sun tracking apparatus comprises a first pair of photosensors arranged at symmetrically opposed positions on a first horizontal axis rotatable around a third vertical axis, and a second pair of photosensors arranged at symmetrically opposed positions on a second axis perpendicular to and rotatable around the first axis. To the first and third axes are connected driving means which operate when there are differences in outputs between the first pair of photosensors and between the second pair of photosensors, respectively.
|
