Aircraft trajectory tracking and anti-disturbance control system and method based on two-dimensional position guidance

Abstract

The invention discloses an aircraft trajectory tracking and anti-disturbance control system based on two-dimensional position guidance. The system comprises an internal control loop and an external control loop which are connected in series mutually, wherein the internal control loop is a pitch angle control loop; the external control loop is formed by connecting a height controller with a forwarddistance controller in parallel; the height controller is formed by connecting a height control loop with a height change rate control loop in series; the forward distance controller is formed by connecting a forward distance control loop with a vertical rate control loop in series; by two-dimensional position guidance of the height control loop an the forward distance control loop, high-accuracytrajectory tracking is carried out; and by the vertical rate control loop, disturbance attenuation is carried out. The two-dimensional position guidance method adopted in the invention can effectively optimize trajectory tracking accuracy. Meanwhile, in the control scheme of the invention, by controlling a vertical rate that a controlled target closes to a trajectory, trajectory disturbance is inhibited; and compared to a conventional control scheme, the control scheme of the invention can more effectively enhance the disturbance inhibition capacity of an aircraft.

Description

technical field [0001] The invention relates to a trajectory tracking control system and method for an aircraft in the glide or climb phase, which adopts a two-dimensional position guidance and tracking technology based on height error and forward distance error, and belongs to the field of control technology. Background technique [0002] At present, the longitudinal trajectory tracking control system of most aircraft adopts the classic control architecture of inner and outer loops in series, in which the inner loop control loop uses attitude angle and angular rate signals for stability enhancement control, and the outer loop control loop obtains the altitude position of the airborne sensor Information and guidance information form a feedback difference to control the attitude command of the inner loop of the aircraft, so that the track inclination can be changed to achieve closed-loop stability control of the flight altitude. The traditional trajectory tracking control sys...

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Problems solved by technology

[0003] In order to overcome defects such as insufficient aircraft tracking accuracy and weak anti-wind disturbance ability in the traditional track tracking control scheme, the purpose of the present invention is to provide an aircraft track tracking and anti-disturbance control method based on two-dimensional position guidance

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