The paper presents researches in the field of increasing the efficiency of the photovoltaic systems. The idea is to design a tracking system that changes the position of the photovoltaic panel in order to maximize the solar radiation degree of use. The tracking system is approached in mechatronic concept, integrating the control system in the mechanical model. The analysis is made using a virtual prototyping platform that includes the following software: CATIA, ADAMS/View & Controls and MATLAB/Simulink. The behavior of the tracking system is evaluated from energetic efficiency point of view.