Research on improved aero-engine Min-Max controller method based on coordination function

In order to improve the deficiencies of the existing aero-engine Min-Max controller, this paper proposes a safety margin-based coordination function to change the thrust control loop controller's gain to improve the fan speed's response speed in the transition state of the aero-engine. The basic idea is to introduce the coordination function based on the safety margin without changing the structure of the Min-Max controller, and use the coordination function to guide each controller to change the control signal to control the current operating state. Simulation results show that the method effectively reduces the possibility of the transition state violating the safety boundary and improves the limiting protection performance of the aero-engine Min-Max controller.