Determination method and device for flight path command of flight vehicle

Abstract

The invention discloses a determination method and device for a flight path command of a flight vehicle. The determination method comprises the steps that according to voyage to be flown, provided by a guiding system, of the flight vehicle, a speed command parameter Vcx of the flight vehicle is calculated; according to the flight speed, provided by the guiding system, of the flight vehicle, a drag acceleration command parameter Dcx, a drag acceleration derivative order parameter cx, a height command parameter Hcx and a tilt angle command parameter thetacx of the flight vehicle are calculated; according to all the calculated command parameters, the flight path command of the flight vehicle is generated and sent to a control system of the flight vehicle. As the flight path command of the flight vehicle can be quickly given according to the flight speed and the voyage to be flown, the determination method and device are beneficial to guidance control over the flight vehicle.

Description

technical field [0001] The invention relates to guidance and control technology, in particular to a method and device for determining a flight path command of an aircraft. Background technique [0002] Aircraft (flight vehicle) is a kind of mechanical flying object manufactured and controlled by human beings. It can fly off the ground and fly in the atmosphere or in the space outside the atmosphere (space). Aircraft are divided into 5 categories, including: glider, airship, airplane, helicopter and other aircraft, artificial earth satellites, manned spacecraft, space probes, space shuttle and other spacecraft, rockets, missiles and guided weapons. [0003] During the flight of the aircraft, the guidance system usually continuously measures the guidance parameters such as the relative position relationship between the aircraft and the target or the predetermined orbit, and gives flight trajectory instructions according to the measured guidance parameters; the guidance system ...

AI Technical Summary

Problems solved by technology

However, the amount of data in the linear interpolation table is often very large, which makes it often take a long time for the guidance system to give the flight trajectory instructions, which also causes the control system of the aircraft to be unable to quickly control the flight of the aircraft according to the flight trajectory instructions (such as flight attitude control), which is very unfavorable for the guidance and control of the aircraft

Moreover, the flight trajectory command of the aircraft given by the linear interpolation method is prone to inflection points, which may cause adverse effects when the aircraft controls its own flight. For example, it may cause the servo system in the attitude control system of the aircraft to vibrate, which is not conducive to the flight of the aircraft. attitude control

[0005] To sum up, the speed of the existing technology to give the flight trajectory command of the aircraft is relatively slow, and it is easy to have an adverse effect on the guidance and control of the aircraft

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