Control Method of Aircraft Automatic Landing Based on Direct Force Control

Abstract

The invention discloses an aircraft automatic landing control method based on direct force control. The method comprises the steps that 1, a nonlinear model of an aircraft is trimmed and linearized, and a transverse channel and a longitudinal channel are decoupled; 2, a glide angle is determined, and an aircraft guidance law of the transverse channel and the longitudinal channel is designed, wherein the aircraft landing process of the longitudinal channel is divided into three sections, namely a level flight section, a transition section and a guide section; 3, a longitudinal control law and atransverse control law are respectively designed, wherein the longitudinal control law design comprises the design of an elevator channel, an accelerator channel and a flap channel and the moment decoupling of direct force control on the elevator; the transverse control law design comprises the design of an aileron channel and a rudder channel. According to the invention, aircraft landing controlcan be carried out under the condition of deck movement, so that the aircraft can safely land according to a preset flight path.

Description

technical field [0001] The invention relates to an aircraft automatic landing control method, in particular to an aircraft automatic landing control method based on direct force control. Background technique [0002] Due to the complex and changeable environment on the sea surface, the aircraft landing process is usually accompanied by uncertain factors such as atmospheric disturbances (such as steady wind, turbulence, gusts, etc.), ship wake disturbances, and deck movement disturbances. This increases the difficulty of the aircraft's autonomous landing process and poses a threat to the safe landing of the aircraft. Therefore, it is of great significance to study the automatic landing control technology of aircraft in complex environments. [0003] In order to keep the aircraft in flight attitude and track the glide track stably during the landing process, it is necessary to design the flight control system. Regarding aircraft landing control, domestic and foreign research...

AI Technical Summary

Problems solved by technology

Considering the nonlinearity of the aircraft model and the influence of environmental factors such as the ship’s wake, the conventional aircraft uses torque to make the aircraft rotate when changing the flight trajectory. Large, very detrimental to the safety of the ship

[0004] In summary, when the landing environment is harsher than the landing environment, there are not only deck movements but also ship wake disturbances. The trajectory response lag of the conventional aircraft landing control method is difficult to meet the high precision of carrier-based aircraft landing. and security requirements

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