A stability control method and system for a parachute-type small unmanned aerial vehicle

Abstract

The invention discloses a parachuting-type small unmanned aerial vehicle stable control method and system. Geomagnetic elements of a geomagnetic field on the X axis, the Y axis and the Z axis of a body axis system of an unmanned aerial vehicle are measured by means of a three-axis magnetic sensor, and a steering engine which needs to be controlled and control quantities are determined according to changes of the measured geomagnetic elements. The method is simple and easy to carry out, the problem that real-time posture information cannot be obtained after the unmanned aerial vehicle dives and hikes and a global positioning system and a gyroscope cannot work normally is solved, and stable control of the unmanned aerial vehicle can be automatically finished.

Description

technical field [0001] The invention relates to the technical field of aircraft control, in particular to a stability control method and system for a parachute-type small unmanned aerial vehicle. Background technique [0002] Aircraft stability control is the key technology in the navigation control of small unmanned aerial vehicles. After the launch of the parachute small unmanned aerial vehicle, it includes two stages, the vertical downward parachute stage and the level flight stage after the dive pull up. The parachute type The main purpose of the stability control of the small unmanned aerial vehicle is to maintain the stable flight of the unmanned aerial vehicle during the level flight process after the unmanned aerial vehicle has parachuted and completed the dive. Existing stabilization control methods for UAVs rely on external GPS values, high-precision auxiliary alignment values, and gyro output, and realize UAV flight control by measuring UAV attitude as feedback. ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a stability control method and system for a parachute-type small unmanned aerial vehicle, which solves the problem that the global positioning system and the gyroscope cannot work normally after the parachute-type small unmanned aerial vehicle dives and pulls up, so that the real-time attitude cannot be obtained. The problem of information, the ability to autonomously complete the stability control of unmanned aerial vehicles

[0006] 1. In the present invention, the change of the geomagnetic field in the X, Y and Z axes of the body coordinate system of the unmanned aerial vehicle is used as the feedback of the real-time attitude of the unmanned aerial vehicle, which solves the problem of the global positioning system and the gyroscope after the unmanned aerial vehicle dives and pulls up. The stability control problem of the unmanned aerial vehicle when the instrument fails to work normally, the method is simple and easy, and can effectively realize the stability control of the aircraft after it dives and pulls up

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