Research on Pressure Precision Control of Complex Verification System

There exists coupling interference between air pressure control and flow control of climate observation verification system.The system's non-linear and time-invariance characteristics make the math model of the system can't be built,thus unable to use the traditional methods for decoupling.A decoupling method based on disturbance model is presented to solve this problem.With the state equation of ideal gas and prediction principle,the disturbance model can be obtained.Then,the disturbance and delay effects can be restrained by adjusting controller outputs in advance.Test results show that this method is of great importance to improve the experimental efficiency.