Lateral track motion estimation and compensation method based on motion platform

A motion platform and compensation method technology, applied in the field of control law design, can solve problems such as aircraft lateral landing deviation

Inactive Publication Date: 2014-08-13
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the moving platform is performing navigational and swaying motions (mainly yaw), the lateral heading parameters of the aircraft measured by the radar will contain errors caused by the misalignment of the radar reference frame and the deck axis of the moving platform, with steady-state errors Radar measurements of the aircraft can also cause sideways landing deviations

Method used

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  • Lateral track motion estimation and compensation method based on motion platform
  • Lateral track motion estimation and compensation method based on motion platform
  • Lateral track motion estimation and compensation method based on motion platform

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Embodiment 1

[0039] A lateral deck motion estimation and compensation method for fully automatic ship landing.

[0040] 1) Firstly, the deck motion model and the required deck parameters are given

[0041] The yaw angle / yaw angle (°) dynamic model of the yaw motion of the moving platform:

[0042]

[0043] Longitudinal movement (m) dynamic model:

[0044] x(t)=2294-84t

[0045] in, is the initial phase of the function, here you can set

[0046] Assuming that the motion platform moves in a straight line at a uniform speed, the motion speed V s =15m / s, when the DMC is activated, the lateral deflection y of the aircraft relative to the centerline of the deck 0 = 10m, deck center line deflection angle

[0047] 2) Deck Motion Compensator I

[0048]

[0049] ψ s ——the yaw angle of the motion platform in the hull coordinate system;

[0050] V s ——the speed of the moving platform sailing in a straight line at a constant speed;

[0051] the y 0 ——The lateral deviation of the ...

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Abstract

The invention discloses a lateral track motion estimation and compensation method based on a motion platform, and belongs to the technical field of control law design. In order to guarantee the fact that an airplane can track an ideal landing point synchronously, a guidance system must be compensated synchronously. The method aims to the last stage of a motion platform landing stage, the influences of sailing motions and swaying motions of the motion platform on ideal landing point positions are taken into comprehensive consideration, and estimation and compensation of track motions on the motion platform are carried out. Deck lateral motion signals are introduced into a lateral guidance system after estimation and compensation so that the dynamic performance of the system can be improved, errors are restrained, and the tracking precision of the airplane is improved.

Description

technical field [0001] The invention relates to a method for estimating and compensating the lateral motion of a runway based on a motion platform, and belongs to the technical field of control law design. Background technique [0002] Compared with the general aircraft landing situation, the landing environment of the aircraft based on the motion platform is more severe, mainly reflected in the existence of complex airflow disturbances at the tail and changes in the ideal landing point caused by the deck movement caused by waves, which will affect the landing accuracy and safety. to have greater adverse effects. For example, the deck suddenly rises, which may cause the aircraft to hit the deck in advance or even hit the tail of the moving platform; or the deck lowers suddenly, which may make the landing hook of the aircraft unable to hang the arresting wire and be forced to perform a deck escape go-around. Therefore, it is necessary to introduce a deck motion compensator (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
Inventor 周大鹏桂敬玲张扬王家兴
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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