An electromechanical system to follow the position of the sun was designed and built at the Solar Evaluation Laboratory of the Technical University Federico Santa Maria (UTFSM) in Valparaiso. It allows the auto. Solar radiation can be converted into useful energy directly, using various technologies. It. The mechanism (Fig. 2) has two axes of motion: axis HH, 1 (east–west motion) and axis EE, 2 (elevation). The adequate following of the position of the sun by the pyrheliometer, 5,. 3.1. Position of the sunThe position of the sun must be established for one geographical point, where the measurement will be done. Two angles are important—the al. The system was tested in parts, simulating the conditions under which it would work. After assembling, it gave the expected results. The levels needed to establish the different statuse. A low-cost automatic closed-loop sun tracker was designed, built and tested. It was used to measure direct solar radiation automatically with a pyrheliometer. The velocities of the a.
