The invention relates to an anti-interference control method and
system for a hypersonic
flight vehicle. The method comprises the following steps: constructing a control-oriented attitude
system model of the hypersonic aircraft, and constructing a terminal function according to an acceleration convergence parameter, aircraft attitude
system state information and error information based on the control-oriented attitude
system model of the hypersonic aircraft; designing a dynamic sliding mode surface according to a terminal function and an adaptive law; a
finite time controller is constructed by taking the dynamic sliding mode surface as a strategy, so that a
tracking error is converged to a design value within a
fixed time, and flight control input is obtained; the method comprises the following steps: constructing a
fixed time fuzzy interference observer according to a
fuzzy logic method and a
fixed time control method based on a control-oriented attitude
system model of a hypersonic aircraft, and obtaining an interference estimated value; and inputting the value into a
finite time controller, and carrying out interference compensation on flight control input. The hypersonic
flight vehicle attitude control method is used for hypersonic
flight vehicle attitude control, and has the advantages of
fast tracking speed, high tracking precision and strong robustness.