GPS-guided unmanned aerial vehicle automatic carrier-landing adaptive control system and method

Abstract

The invention discloses a GPS-guided unmanned aerial vehicle automatic carrier-landing adaptive control system and method. The system includes: a GPS guidance reference trajectory generation and trajectory error calculation module which is used for inputting signals detected by a GPS, establishing a reference trajectory in a ground coordinate system with an ideal carrier-landing point being an original point, and finally outputting the signals; a longitudinal guidance law module which uses a pitch attitude as an internal loop, and realizes control of flight height by suppression of a height error; a lateral guidance law module used for subtracting an actual lateral position signal from a designated lateral position signal to obtain an error signal and eliminating the error signal; and a flight control loop includes control law modules of four channels of accelerator, elevator, aileron and rudder. The GPS-guided unmanned aerial vehicle automatic carrier-landing adaptive control system provided by the invention realizes conversion of a trajectory tracking error signal into an attitude tracking command signal, solves the problem of attitude tracking through adaptive control, and an unmanned aerial vehicle automatic carrier-landing guidance and control system is formed.

Description

technical field [0001] The invention relates to a GPS-guided UAV automatic landing adaptive control system and method, and belongs to the technical fields of flight control, UAV landing and the like. Background technique [0002] The problem of automatic landing of carrier-based UAV has always been a hot and difficult point in the research field of carrier-based aircraft, UAV, and flight control. In February 2011, the U.S. Navy announced in a high-profile manner that a new unmanned aerial vehicle capable of taking off from an aircraft carrier, the X-47B unmanned reconnaissance and attack aircraft, completed its first test flight. The X-47B unmanned combat aircraft will be the world's first unmanned reconnaissance attack aircraft that can be used by both land-based and aircraft carriers. It will be jointly developed by the US Navy and Air Force. This incident has received widespread attention from countries all over the world, marking the arrival of the era of carrier-based ...

AI Technical Summary

Problems solved by technology

However, the design of the above-mentioned control method depends on the mathematical model of the UAV, which brings certain difficulties to the design in practical application.

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