An FPGA implementation of the PLL/PWM positon servo system

Abstract

The PLL motor speed control system (PLL-MSC) has an excellent speed follow performance. In addition, the position control system (PLL-PCS) where the speed deflection doesn't exist fundamentally can be constructed if it combines with the pulse error counter. Here, the parameter design method based on the consideration of the time resolution when the system of the control of the speed of the PLL/PWM motor that can compose on a small scale is combined withthe collecting counter by complete digital achievement and the positional servo system is achieved and the experiment result by FPGA are shown.