System and method for shaping damping in the feedback loop of a second-order integrating system for use in a resonant controller

Abstract

The application concerns a system and method for shaping the damping in the feedback loop of a second-order integrator used in a resonant controller. The application uses information about the controller's internal state to determine the damping coefficient. The controller includes two integrators (101, 102), a combiner (105), and an amplifying block (106), as well as an amplitude detection circuit (103) and a damping shaping circuit (104). Amplitude detection is performed based on signals collected before and after the first integrator (101). The calculated amplitude is used to generate a damping signal, which is fed to the controller's input combiner (105).