The invention discloses a dynamic negative-pressure
servo control system and method based on symmetric air cylinders, and belongs to the field of air pressure
simulation of high-altitude vehicles. Thedynamic negative-pressure
servo control system comprises an electromechanical transmission module, a pneumatic module, a control module and a data collection module. The electromechanical transmission module adopts a motor direct drive mode, makes a
servo motor directly connected with a
ball screw, the pneumatic module utilizes the symmetric negative-pressure air cylinders as pressure generators,the control module is used for controlling and switching different pressure input signals and pressure open loop controllers, and the data collection module collects pressure of controlled cavities of the negative-pressure air cylinders and displacement of cylinder pistons through pressure sensors and displacement sensors and transmits the pressure of the controlled cavities of the negative-pressure air cylinders and the displacement of the cylinder pistons to an industrial
personal computer. The invention further discloses a dynamic negative-pressure
servo control method based on the symmetric air cylinders. By the adoption of the dynamic negative-pressure
servo control method, dynamic negative-pressure
servo control is achieved rapidly and accurately, meanwhile, the dynamic negative-pressure servo control device has the advantages of being simple in structure and easy to implement, and is particularly suitable for air pressure
simulation equipment for
spacecraft.