High-Precision Solar Tracking System

 Abstract—In this work we propose an innovative system for tracking the sun which is based on the use of a commercial web cam as the sensor element. An experimental electro-mechanism was designed and developed to evaluate its accuracy and efficacy in tracking the sun under different weather conditions. The impact on the system performance caused by intermittent cloud cover and temperature changes were also analyzed. The system showed an accuracy of 0.1o and high immunity to temperature variations. It demonstrated to be able to relocate the sun, as well as extrapolate its position when it cannot be observed for a period of time.