Comparative study of P, PI, PD and PID controllers for operation of a pressure regulating valve in a blow-down wind tunnel

Abstract

A comparative study towards control of the Pressure Regulating Valve of a trisonic blow down wind tunnel, based on simulations is presented. Effectiveness of P, PI, PD and PID controllers in accomplishing the control objectives is presented. Design of the various controllers was based on specified design parameters and simulations were carried out using MATLAB. The primary objectives of reductions in the transient response such as overshoot and undershoot, as wells as improve the settling time, rise time, steady state error etc., were best achieved using a PID controller based on the feedback signal.