Design of Model Following Control Integrating PID Controller for DC Servomotor-Based Antenna Positioning System

Abstract

The study presented the design of an efficient motorized antenna positioning control system using Model Following Control (MFC). It was desired to design a control system to improve system stability and reduce position error. The dynamic model of a direct current (DC) servomotor antenna control system was developed to achieve this. An MFC was designed that integrated a Proportional Integral Derivative (PID) controller in the frequency domain for tuning the control loop in terms of transient characteristics and robustness; this gives a technique known as MFC-PID control. The MFC-PID was integrated with the dynamic model of the DC servo motor antenna closed-loop control system. The designed system was simulated in MATLAB/SIMULINK environment. The system was able to achieve the performance criteria in terms of rise time (tr = 1.4483s), settling time (ts = 4.2470s) and overshoot (Mp = 5.5214%), which represents an improvement on the settling time and overshoot over the convectional PID technique. Generally, the performance of the antenna positioning servo control system was optimized using the MFC-PID algorithm.