An Integrated Method of Aircraft Guidance and Control Based on Observer Technology

Abstract

The invention relates to an aircraft guidance and control integration method based on observer technology, which establishes a missile guidance and control integration model, and converts the missile guidance and control integration model into a strict feedback nonlinear mathematical model; Model, combined with variable structure sliding mode control and backstepping control, design multi-sliding mode surface backstepping controller. The invention facilitates the design of the control algorithm. By designing the compound item D, the sliding mode surface is stable and reachable, and the differential explosion phenomenon is avoided; the initial value attenuation item is introduced to optimize the sliding mode surface, reducing the amplitude of the control signal , which is beneficial to prevent the saturation of the actuator; the compound item D is observed and compensated by the second-order disturbance observer, which improves the anti-disturbance ability and robustness of the system.

Description

Technical field [0001] The present invention relates to the field of aircraft guidance control, and in particular to an aircraft guidance control integrated method based on observed techniques. Background technique [0002] The traditional missile guidance control algorithm has many drawbacks due to separation design. In the case of high supersonic flight environments, the time constant gap between the guidance circuit and the control circuit is small, the coupling is more serious, and the separation design tends to cause the end guidance accuracy and even missiles. [0003] The integrated control method is a method that does not depend on spectrum separation hypothesis. This method will guide, control the integrated design of the two circuits, fully considering the mutual impact between the two times, is the research hotspot in the field of guidance control. [0004] At present, existing integrated guidance control algorithms are not yet mature, there are many problems such as c...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an integrated method of aircraft guidance and control based on observer technology, which solves the problems that the existing integrated guidance and control algorithm is not yet mature, the control algorithm is complicated, and the phenomenon of differential explosion is prone to occur

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