考虑进气约束的高超声速飞行器预定性能控制

To solve transient performance constraints of tracking errors and inlet airflow constraint of scramjet for air-breathing hypersonic vehicle, a constrained prescribed performance controller is proposed. Firstly, a novel setting-time performance function is presented to limit the transient and steady state performance of tracking errors. Compared with traditional methods, the novel function can guarantee that the performance function converges to the steady state precisely at the setting time. Meanwhile, the initial convergence rate of the performance function can be adjusted freely. Then, velocity and height tracking errors are unconstrained via coordinate transformation. By means of controlling the errors of transformation bounded, the prescribed performance constraints of original tracking errors can be satisfied. In the height subsystem, by combining prescribed performance control to limit the range of angle of attack, the inlet airflow requirements of scramjet can be satisfied. Finally, comparative simulations on the air-breathing hypersonic vehicle with parametric uncertainties are performed to demonstrate that the method presented can effectively satisfy the performance constraints of tracking errors and inlet airflow constraint of scramjet.