Based on the structure and principle of pressure controller (which is a pressure feedback control system composed of several pneumatic components) of air turbine starter system (ATS)

the mathematic model was established through theoretical analyze.Then a pressure control system simulation platform was developed based on the AMESim simulation environment by using the modularization modeling method.Take a kind of ATS as the object for simulation

the pressure characteristics was simulated by giving ramp signal

random square wave signal and sine signal.The result show that output pressure can maintain within required range

and compared with the test data of typical operation state

the simulation error is less than 3%.The model of pressure controller is suitable for engineering.