Method and system for controlling coordinated turn of rotorcraft

Abstract

The invention discloses a method and a system for controlling a coordinated turn of a rotorcraft. The method comprises the steps of: obtaining an actual flight parameter value and a corresponding reference parameter value of the rotorcraft when turning; using an actual height value and a reference height value as inputs of a height controller; using the PID algorithm to obtain a speed correction value; using an actual speed value, a reference speed value and the speed correction value as inputs of a speed controller; using the PID algorithm to obtain an attitude angle correction value and an engine thrust; using an actual attitude angle value, an actual angular speed value, a reference attitude angle value and the attitude angle correction value as inputs of an inner loop attitude controller; using a robust control method to obtain a control torque; and using the control torque and the engine thrust as inputs of a ground-air vehicle flight dynamics model to control flight states of therotorcraft during turn. By adopting the method or the system, the stability and the speed of the rotorcraft during turn can be improved, the flight direction can be accurately controlled, and the hidden danger can be reduced.

Description

technical field [0001] The invention relates to the technical field of aircraft control, in particular to a rotorcraft coordinated turning control method and system. Background technique [0002] Turning flight refers to a flight mode in which the target position is not in the current heading and the flight direction needs to be adjusted, especially when circling reconnaissance of ground targets, it is even more necessary. During the turning flight of the aircraft, the fuselage produces a rolling tilt, which makes the adjustment of the heading also affect the longitudinal attitude; The flight is stable, so the aircraft generally adopts the coordinated turning flight mode during the turning flight. [0003] At present, most of the researches on the turning flight of the aircraft are concentrated on the research on the turning flight control of the helicopter, and there is almost no special research on the turning flight control of the rotorcraft. With the wide application o...

AI Technical Summary

Problems solved by technology

[0003] At present, the research on the turning flight of aircraft is mostly concentrated on the research on the turning flight control of the helicopter, and there is almost no special research on the turning flight control of the rotorcraft

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