Modeling and Control of a Two-Axis Solar Tracking System
The present work focuses on the analysis of a two-axis pedestal-type solar tracking system controlled by a Proportional-Integral-Derivative (PID) control law plus feedforward applied to the motors that drive the tracking system. The implementation of a solar positioning algorithm is performed to calculate the trajectories of the solar tracking system to track the movement of the sun. These trajectories are applied as desired trajectories to the PID control loops controlling the motors. Results of real-time experiments are presented, and the energy consumption of the motors is analyzed.
The authors would like to thank the support of Gerardo Castro Zavala, Jesus Meza Serrano in setting up the laboratory testbed. The first author would like to thank the support given by CONACyT and CINVESTAV-IPN. This work has been supported by CONACyT Mexico under grant 222140.
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