Design of a PI controller with Anti-reset wind up for a Wind Tunnel

Wind tunnel is a test facility used to simulate the flight conditions. It allows us to make a reusable prototype and test it in the tunnel in low cost. Hypersonic wind tunnels operate at hypersonic speeds ie, with a mach number greater than 6. For doing experiments, it is necessary to maintain a constant pressure in the settling chamber of the tunnel so that we get the desired mach number and mass flow rate at the nozzle output. Here, a PI controller with anti reset wind up is designed and the pressure of hypersonic intermittent blow down type wind tunnel is controlled.