An Internal Model Control Algorithm Based on Composite Compensation for Aeroengine System with Long Time-delay

In order to control a system with long time-delay of a certain turbofan engine, an internal model control algorithm based on composite feedback-feedforward compensation was proposed. By this method, feedforward was used to compensate the controlled variables before changing and strengthening the system's correcting ability, which would accelerate the response speed and reduce the steady-state error; The thought of internal model control was applied to adjust the parameters of PID controller, and this could reduce the parameters needed to be adjusted online and make the parameters be easy to adjust. The simulations and the trial run test results showed the validity of the proposed method.