Discrete State-Feedback Control Design with D-Stability and Genetic Algorithm for LED Driver Using a Buck Converter

In this paper, a discrete state-feedback controller is applied to control the current in power LEDs by using buck converter. Sufficient conditions for existence of are given terms linear matrix inequalities (LMIs) with D-stability theory. order consider specific closed-loop dynamics LED driver, genetic algorithm (GA) technique applied, as complement Therefore, proposed GA used search offline optimal eigenvalues have desired response system, subject cost function equation. The main contribution work design and experimental validation both achieve LED-driver system. Finally, simulations results done illustrate effectiveness methodology.