Fuzzy and PID compound control of mach number for 0.6 meters supersonic wind tunnel

Aiming at the high guideposts of capacity, pressure and Mach number of the 0.6 meters wind tunnel, a new strategy compounded fuzzy and PID is proposed in this paper, and the corresponding controller is designed for the wind tunnel. Using the advanced virtual instrument programming language Lab Windows/CVI as the development tool, the control of continuous Mach number and single nozzle total pressure for 0.6 meters supersonic wind tunnel are realized using modular, structured design method. The control accuracy reaches 0.2% and the time of transition process is short without overshoot. Thus the test efficiency is improved, the gas source is saved and achieve the purposes of saving energy and lower energy.