Research on Temperature Control of Air Supply System of Large Civil Aircraft
As an important part of the environmental control system,the stable outlet pressure and temperature of the air supply system are very important to the stable work of the downstream cabin pressure control system,wing anti-deicing subsystem and air circulation subsystem.In the complex and harsh operating environment of the engine and the traditional liquid temperature control technology cannot meet the temperature control accuracy,this paper on the basis of the tradition PID control,designed a PID algorithm based on temperature/temperature change rate as the control object.Simulation verification and system bench test verification show that when the engine bleed air temperature or downstream gas demand temperature changes,the algorithm can fully meet the air supply system on temperature,pressure control stability,speed and accuracy then provide engineering reference for the temperature and pressure control of other aircraft environmental control subsystems.
large civil aircraftair supply systemPID algorithm
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