Multi-objective regulating and protecting control for ducted rocket using a bumpless transfer scheme

This article deals with the problem of multi-objective regulating and protecting control for a ducted rocket, in order to get maximum thrust while avoiding extremely dangerous phenomenon like inlet buzz. First, the mathematical models involving gas flow regulating system and ducted rocket are introduced. The description of inlet buzz margin is also given and analyzed. Second, the multi-objective switching control problem of ducted rocket is proposed and discussed. Third, a robust bumpless transfer scheme for solving the problem is presented. The designed bumpless transfer compensator based on model reference adaptive sliding-mode control ensures that the switched system performs a smooth transition at the transfer moment. The stability analysis is then given utilizing the Lyapunov functional approach. Finally, the bumpless transfer strategy is applied to the ducted rocket control system, and the simulation results show its effectiveness.

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