Design of a New Non-Singular Robust Control Using Synergetic Theory for DC-DC Buck Converter

Abstract

DC-DC converters control has gained muchattention because of their broad uses in various fields, ranging from hand-heldcalculators to sophisticated airborne vehicles. Robustness in control systems,in spite of parametric variations, is an absolute requirement in many such applications.We propose a new controller to realize a robust performance despite theuncertainties on system parameter values. The controller employs an adaptivenon-singular finite-time synergetic control method to tackle disturbances,which enhances the robustness and enables better performance during thetransient phase compared to the terminal sliding mode control. A finite-timeconvergence is therefore achieved, while Lyapunov synthesis guaranteesstability. Extensive simulation results of the DC-DC converter under harshoperating conditions confirm the effectiveness of the proposed controller.