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Self-adaptive rapid trajectory tracking and guidance method

An adaptive and fast technology used in directional control systems, offensive equipment, weapon attachments, etc.

Active Publication Date: 2019-09-10
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no ballistic tracking guidance method that can simultaneously meet the rapidity requirements of the battlefield, suppress the disturbance of aerodynamic parameters in the control, and improve the robustness of the system.

Method used

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  • Self-adaptive rapid trajectory tracking and guidance method

Examples

Experimental program
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Embodiment 1

[0119] Using a proposed adaptive fast ballistic tracking guidance method, the simulation experiment of the ballistic tracking stage of the gliding projectile is designed. The initial conditions of the simulation are set as follows: the initial conditions are v=273m / s, θ=0°, x=0m, y=16000m, the error of setting parameters is shown in Table 1.

[0120] Table 1 Table of parameter changes in simulation

[0121]

[0122] figure 2 It is the trajectory curve diagram of the trajectory of the gliding projectile in the longitudinal plane of the tracking scheme during the simulation process. It can be seen from the curve that the gliding trajectory can better approach the trajectory of the scheme.

[0123] image 3 It is the tracking distance error curve of the gliding projectile in the trajectory tracking process of the scheme in the simulation process. Depend on image 3 It can be seen that when the remaining tracking distance meets the requirements, the system automatically ...

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Abstract

The invention discloses a self-adaptive rapid trajectory tracking and guidance method. The method comprises the steps that a controlled gliding missile longitudinal plane inner motion model and a longitudinal plane inner missile relative motion model are firstly built; then motion parameters of a missile body are acquired through a missile-borne sensor, the sight angle speed information is calculated, and track points are updated; then a tracking and guidance rule is designed; finally a guidance command is input into a steering engine, and the angle of a rudder sheet is controlled; and motionparameter acquiring and tracking control are repeated till tracking is finished. By means of the method, the requirement for rapidness in a battlefield can be met, pneumatic parameter disturbance in control is retrained, and system robustness is improved.

Description

technical field [0001] The invention relates to the technical field of ballistic tracking and guidance, in particular to an adaptive fast ballistic tracking and guidance method. Background technique [0002] The technology of guided munitions is an important development direction of weapon science and technology at present, and many guided munitions fly with precise tracking scheme as the premise of realizing precise strike. Due to various disturbances in the atmosphere, there are also deviations in the measurement data when tracking the trajectory, which puts forward high requirements for the precise trajectory tracking technology of the aircraft. Scholars at home and abroad have proposed many control methods for the problem of ballistic tracking, and achieved good tracking results. Gandolfo proposed a tracking control algorithm based on linear algebra theory; Zhang Dayuan used the feedback linearization method to accurately linearize the particle motion model of the missi...

Claims

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Application Information

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IPC IPC(8): F41G7/00
CPCF41G7/00
Inventor 易文俊张文广
Owner NANJING UNIV OF SCI & TECH