Control method of crosswind landing for unmanned planes

Abstract

The invention relates to a control method of crosswind landing for unmanned planes. The control method comprises following steps: establishing current rectification maneuver control for unmanned planelanding, wherein the current rectification maneuver control is used to reduce the aircraft drift angle [beta]w; adding heading maneuver reservation control to the current rectification maneuver control to reduce the impact of the current rectification maneuver on the lateral control of the unmanned plane; adding sideslip angle limit to the current rectification maneuver control to prevent the unmanned plane from exceeding the lateral load limit; adding roll angle permission limit to the lateral control branch of the correction maneuver to avoid the wing rubbing caused by near-ground roll correction. According to the control method of crosswind landing for unmanned planes, lateral correction and current correction maneuver are combined in landing control process, which solves the matchingproblem of coordinated control and current correction maneuver control in landing process, realizes safe landing under limited roll attitude and limited sideslip, and can significantly improve the safety of lateral wind landing process of unmanned planes.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle flight control, and in particular relates to a crosswind landing control method of an unmanned aerial vehicle. Background technique [0002] The flight height, speed, and configuration of the UAV during the landing process all need to be greatly adjusted. During the landing process, the UAV will also be affected by ground effect aerodynamics and wind field shear. It is one of the stages with high incidence of accidents. Among them, the crosswind component of the landing wind field is a very adverse effect on the landing process. Affected by the crosswind, the aircraft heading is directly disturbed, which in turn affects the landing control of the aircraft. If the conventional side-slip method is used for landing, although it can ensure that the aircraft heading is aligned with the runway, the aircraft needs to reciprocally adjust the sideslip and roll attitudes to offset the effec...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a control method for crosswind landing of unmanned aerial vehicles, which avoids the problem of reciprocating control in the horizontal direction caused by the side-slip method and crosswind landing, and at the same time solves the safety problem of the correction flow maneuver before the grounding of the drift method

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