| 摘要 |
The present disclosure is related to a motion positioning system for solar trackers and/or heliostats, based on low-cost mechanical elements. This solar tracker operates by amplifying the torque provided by an electric motor, in a two-stage reduction of an angular speed. The first stage is made of an endless-type pair of gears and crown, allowing amplification of the torque in a small space. The second stage is formed by a friction roller that drives a drum; this is linked to the tracker structure where the solar collection elements are installed; whereby the rotation of the roller on the curved surface of the drum generates an angular movement over the motion axes of the solar tracker. The movement system is capable of operating in a closed control loop, as it contains angular position sensors in each of its final tilting axes. Therefore, the solar tracker has the ability to correct its tilting angle in case of external disturbances removing it from its desired position. |
