Aero-engine PI Control Based on the Simplified Inverse Model

The aero-engine thrust control system was researched in this paper. The engine pressure ratio was selected to form a two input two output control system with thrust based on the open loop sensitivity analysis method and system linear inverse model existence condition The inverse model was established. Then the inverse model was used as the decoupling device and the PI control method were applied to the decoupling control system. The simulation results show that the method get good control performance. The structure of pure integral control system with the inverse model decoupled is better and its integral parameter is the bandwidth of the system, and the parameter is easy to adjust, and the controller is simple. It achieves no overshoot, no static error and fast tracking.