A control method for the pitching motion of a radar three-axis stabilized turntable

A technology of pitching motion and three-axis stabilization, applied in the direction of feedback control, radio wave reflection/reradiation, instruments, etc., can solve the problems of increasing the load of the lower stable platform, limiting the application range of large antennas, and increasing the weight of equipment, etc.

Active Publication Date: 2022-04-08
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology needs to change the inherent structural form of the three-axis stabilized turntable, increase the weight of the equipment, and at the same time increase the load of the lower stable platform, which limits the application range of large antennas

Method used

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  • A control method for the pitching motion of a radar three-axis stabilized turntable
  • A control method for the pitching motion of a radar three-axis stabilized turntable
  • A control method for the pitching motion of a radar three-axis stabilized turntable

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Embodiment Construction

[0012] The present invention will be further explained in conjunction with the accompanying drawings and embodiments.

[0013] Step 1: Subtract the given azimuth A of the position where the radar antenna needs to move in pitch and the heading angle H given by the ship compass equipment to obtain the angle A of the position where the radar antenna needs to move in pitch C , that is, the bank angle of the position where the antenna will perform pitching motion;

[0014] Step 2, at the sheer angle A C In terms of position, project the given elevation angle E that the antenna needs to pitch to the motion plane of the pitch frame (YOZ plane) and the motion plane of the roll frame (XOZ plane) of the stable turntable, respectively, to obtain θ P1 and θ R1 , whose expression is expressed as:

[0015] θ P1 =E·cosA C , θ R1 =E·sinA C

[0016] where θ P1 Indicates the pitch projection value of the pitch frame motion plane (YOZ plane), θ R1 Indicates the roll projection value of...

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Abstract

The invention relates to a method for controlling the pitching motion of a radar three-axis stable turntable. According to the given azimuth angle of the position where the radar antenna needs to move in pitch, calculate the bank angle of the position where the radar antenna needs to move in pitch. Project on the motion plane of the roll frame to obtain the motion change angle of the pitch frame (pitch projection value) and the motion change angle of the roll frame (roll projection value), and then send the current ship pitch angle with the ship compass equipment Mathematically calculate the pitch and roll angles respectively, and obtain the input values ​​of the pitch frame control loop and the roll frame control loop of the stabilized turntable, and input them to the respective control loops for closed-loop control, so as to realize the radar antenna in the case of ship swaying. Pitch motion for a given elevation angle in a fixed azimuth.

Description

technical field [0001] The invention belongs to the technical field of radar technology application. Background technique [0002] The radar three-axis stabilized turntable adopts a pitch frame and a roll frame with two axes perpendicular to each other to form a stable platform, and the two frames move around each other's axis; an azimuth frame with an axis perpendicular to the plane of the stable platform is supported on the stable platform, and the azimuth frame revolves around itself The axis rotates 360 degrees to form a turntable. The stable platform and the turntable are combined to form a three-axis stable turntable, which provides attitude stability in space for the radar antenna installed on the turntable. The use of three-axis stabilized platforms on space vehicles and ships helps the radar system to obtain a good spatial reference. The pitch frame, roll frame and azimuth frame in the three-axis stabilized turntable generally move independently and are not relate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/68G01S7/40G05D3/12
CPCG01S13/685G01S7/4026G05D3/12G01S7/4034
Inventor 吕向阳李涛郭锐冯瑗瑗丁锋
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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