| 摘要 |
PURPOSE:To obtain a solar ray follower of low consumed power and low cost by a method wherein at least three motors having respectively different revolutions are provided, and then the posture of a focus system solar photo generator is controlled by switching them gradually. CONSTITUTION:The solar ray follower is driven generally by a motor 5. In case of improper opposition to solar rays as the sun moves, the signal of a solar position detector 3 is transmitted to the follow controller 4. When the solar photo generator keeps behind the solar position, the lag is corrected by switching to a slightly higher motor 5'; when ahead of it, the lead is corrected by switching to a slightly slower motor 5''. At the point of proper opposition of the solar photo generator to the sun, a normal action is maintained by switching again to the original drive motor 5. The control for revolutions of the drive motors is unnecessitated, resulting in the saving of power loss, and the effect to the reduction of the cost is large. |
