Active-disturbance-rejection trajectory linearization control method suitable for hypersonic velocity maneuvering flight

Abstract

The invention relates to an active-disturbance-rejection trajectory linearization control method suitable for hypersonic velocity maneuvering flight. The active-disturbance-rejection trajectory linearization control method regards a part different from a nominal model as a general disturbance, establishes a hypersonic aircraft attitude and angular velocity dynamic model with multi-source complex uncertainty and strict feedback form, designs attitude ring and angular velocity ring model auxiliary expansion state observers, adopts a non-linear tracking differentiator to arrange a transition process for a given guidance command and generate a nominal command of an attitude ring, designs an active-disturbance-rejection trajectory linearization attitude ring controller containing a feedforward tracking control law, a feedback stabilization control and a disturbance compensation term, and designs an active-disturbance-rejection trajectory linearization angular velocity ring controller containing a feedforward tracking control law, a feedback stabilization control and a disturbance compensation term. The active-disturbance-rejection trajectory linearization control method achieves high-precision anti-disturbance control under the given conditions of large-margin guidance command and control constraint, and has high adaptability for multi-source disturbance large-scale perturbation in hypersonic velocity long-span maneuvering flight.

Description

technical field [0001] The invention relates to an active disturbance rejection trajectory linearization control method suitable for hypersonic maneuvering flight, which is mainly used to solve high disturbance rejection, high-precision reentry guidance and tracking control of hypersonic aircraft. Background technique [0002] The near-space hypersonic vehicle is a new strategic commanding height resulting from the rapid development of aerospace integration technology in the 21st century. Due to the advantage of flight altitude, most of the current ground attacks can be avoided, and the survivability is greatly improved; due to the huge advantage of flight speed, it can attack any target in the world within 2 hours from the mainland without the need for overseas bases; due to the hypersonic speed The wide-range maneuverability can easily break through the interception of the ballistic missile defense system, and the penetration capability is greatly improved. As the most co...

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Problems solved by technology

[0004] Aiming at the attitude tracking control problem caused by the large-span maneuvering flight of hypersonic aircraft, which is caused by the intrinsic nonlinearity and strong coupling, multi-source aerodynamic parameter perturbation and external environmental interference, the present invention proposes a method suitable for hypersonic maneuvering flight The active disturbance rejection trajectory linearization control method solves the problem that the existing nonlinear control method cannot cope with the large-scale uncertainty in the re-entry process due to insufficient robustness, and realizes the improvement of the hypersonic vehicle's large-scale maneuvering flight attitude control accuracy and anti-disturbance purpose of ability

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