Saeed Rooka - Department of Electrical Engineering DAMAVAND branch ISLAMIC AZAD UNIVERSITY TEHRAN, IRAN
Reza Ghasemi - Department of Electrical Engineering University of Qom Qom, IRAN

This paper proposed an approach to design sliding mode observers for Takagi-Sugeno fuzzy model of nonlinear dynamics of sun tracker by the sector nonlinearity method. Thephotovoltaic sun tracker can collect sun rays and augment the value of incoming energy. The sun tracker considered in thisstudy has two degrees of freedom (2-DOF) and especially specified by the lack of sensors. The controller design procedureis based on a sliding mode LMI Lyapunov function method. Themain merit of the presented observer and controller is robustness against model uncertainty and disturbances. The simulation results illustrate the promising performance of the proposed observer.

TS observer; sun tracker; sector nonlinearity approach,sliding mode