Linear quadratic integral (LQI) control for a small scale turbojet engine with variable exhaust nozzle

The goal of this paper is to show the results of the design of a robust, optimal servo control based on LQ for a small scale turbojet engine that is equipped with a variable exhaust nozzle. As the mathematical model and the identification of the plant from previous steps of this research are obtained, now the development and verification of the controller is solved. The major difference between military and civil turbine power plants is the variable exhaust nozzle, which increases the flexibility of the control but also results in a more complex model.