College of Automation;
Northwestern Polytechnical University;
Xi'an 710072;
P.R. China;
Shanghai Aircraft Airworthiness Certification Center of CAAC;
Shanghai 200335;
P.R. China;
Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration;
Nanjing University of Aeronautics and Astronautics;
Nanjing 210016;
P.R. China;
cabin; pressure control; digital electro-pneumatic; PID controller;