UNIVERSAL CONTROLLER FOR DIGITAL RF CONTROL

Abstract

Digital RF control systems allow to change the type of controller by programming of the algorithms executed in FPGAs and/or DSPs. It is even possible to design a universal controller where the controller mode is selected by change of parameters. The concept of a universal controller includes the self-excited-loop (SEL) and generator driven resonator (GDR) concept, the choice of I/Q and amplitude or phase control, and allows for different filters (including Kalman filter and method of optimal controller synthesis) to be applied. Even timevarying mixtures of these modes are possible. The implementation of such a controller is presented.. The controller is optimized for pulsed operation with ms pulses which allow use of finite length tables for measurement and control.