This document summarizes a dissertation on sensorless control of active magnetic bearings. The dissertation studies, simulates, and implements an active magnetic bearing system without position sensors. It uses a self-sensing technique called PWM ripple-based modulation that extracts position information from the amplitude of current ripple imposed by a switching amplifier. The system is first modeled and simulated in Simulink. Then a digital controller is generated from the Simulink model and tested on an FPGA board to control the switching of a power amplifier for the magnetic bearing coils. Tests showed the model provides prompt and strong reaction to support the rotor in a hovering position without sensors.