  In this work we will talk about a new control test using the sliding mode
control with a nonlinear sliding mode observer, which are very solicited in
tracking problems, for a sensorless photovoltaic panel. In this case, the panel
system will has as a set point the sun position at every second during the day
for a period of five years; then the tracker, using sliding mode multimodel
controller and a sliding mode observer, will track these positions to make the
sunrays orthogonal to the photovoltaic cell that produces more energy. After
sunset, the tracker goes back to the initial position (which of sunrise).
Experimental measurements show that this autonomic dual axis Sun Tracker
increases the power production by over 40%.
