A Compensator Design Using Frequency Response

Abstract

In this project, a compensated control system was designed using Bode plot technique. The system required must have a phase margin about and gain margin about . The original system when plotted the phase margin is . This means that the system need a phase – lead network as a compensator. The velocity error of the original system is found by using the final value theorem. The maximum phase is obtained from which was calculated. From Bode plot is obtained at gain crossover frequency and from and , the lead network transfer function was obtained. When the obtained transfer function was cascaded with the original system, the required gain and phase margin were obtained.