Edinburgh Napier University

  Due to their inherent capacity to convert solar energy to electrical energy, photovoltaic systems are considered as one of the most promising developing technologies which are gaining a lot of attention these days. In this paper, we propose a novel feedback approach to control the position of two Direct Current servomotors mounted in a solar energy system. Unlike the classical feedback controller, this strategy can handle both of linear and nonlinear models and it is very suitable for underac-tuated systems. The concept of the investigated method consists on dividing the system into individual subsystems and designing a virtual input for each one. Since this strategy processes in iterative algorithm, general formulation is established to provide a standard modelling that can be applied with any order of systems. Simulation results have demonstrated the efficiency of the investigated controller in terms of convergence towards the desired references with minimal tracking errors.