Switching control of thrust regulation and inlet buzz protection for ducted rocket

The renewed interest on ducted rockets impulses their investigation. In this article, switching control in the working process of ducted rockets is focused on, in order to obtain optimal thrust control while avoiding phenomena like inlet buzz. Firstly multi-objective control problems of ducted rockets during its working process are discussed. Then the dynamic mathematical models of gas flow regulating system, thrust regulation control loop and inlet buzz protection loop are established and analyzed. Lastly, the switching strategy and PID controller are applied to the ducted rocket system, and the influence of integral limitation of controllers is analyzed. In conclusion, it is useful to introduce the multi-objective switching control to ducted rockets, and simulation results show its validity.