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High-stability control method based on movement of satellite antenna driving mechanism

A satellite antenna, high-stability technology, applied in the antenna, antenna, antenna coupling and other directions suitable for movable objects, can solve the problem of satellite stability decline and other problems, achieve smooth convergence curve, improve execution ability, and converge. stable effect

Pending Publication Date: 2022-01-28
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0004] The technical problem solved by the present invention is: in the current prior art, in the traditional antenna control method, the tracking angular velocity and angular acceleration of the antenna change suddenly after receiving the command each time to cause the satellite stability to drop, and a method is proposed. High Stability Control Method Based on Motion of Satellite Antenna Driving Mechanism

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  • High-stability control method based on movement of satellite antenna driving mechanism
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  • High-stability control method based on movement of satellite antenna driving mechanism

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Embodiment Construction

[0031] A high-stability control method based on the movement of the satellite antenna drive mechanism. In the process of improving the attitude control, the execution ability of the antenna control actuator can make the trajectory of the antenna smooth, reduce the interference effect of the antenna movement, and solve the problem of the satellite antenna movement. The attitude interference problem of the satellite body, the specific process is as follows:

[0032] (1) Construct the antenna driving function matrix equation;

[0033] Among them, the antenna driving function matrix equation is specifically:

[0034]

[0035]

[0036] In the formula, α t is the target angle, α pst is the initial angle, ω αt is the target angular velocity, ω αpst is the initial angular velocity, The angular acceleration of the previous cycle, Λt is the communication cycle, and the angular acceleration of the current communication cycle is

[0037] (2) Calculate trajectory planning ca...

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Abstract

A high-stability control method based on the movement of a satellite antenna driving mechanism can improve the execution capability of an antenna control execution mechanism in the attitude control process, enables the movement track of an antenna to be smooth, and reduces the interference influence of the movement of the antenna . The technical problem to be solved is to solve the attitude interference problem of the satellite antenna motion on the satellite body by using the method, and compared with a simulation result using an unsmooth planning result, the angular velocity oscillation in the control process is effectively avoided, and the influence of the motor motion is reduced, so that the attitude control precision and the stability of the control process are improved.

Description

technical field [0001] The invention relates to a high-stability control method based on the motion of a satellite antenna drive mechanism, belonging to the field of satellite antenna drive control. Background technique [0002] High-stability imaging satellites transmit imaging data, satellite telemetry data, etc. to ground stations through data transmission antennas during in-orbit operation. Usually, remote sensing satellites control the antenna by calculating the tracking angle and angular velocity of the antenna by the control subsystem, and sending them to the servo controller module in the digital transmission integrated management unit, and then the servo controller module calculates the rotation of the antenna drive shaft according to the target angle speed and direction of rotation. [0003] The communication cycle between the control subsystem and the digital transmission integrated management unit is 0.5s. The digital transmission antenna receives the antenna co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/28H01Q3/00H01Q1/52
CPCH01Q1/288H01Q3/00H01Q1/52
Inventor 关宏王晋鹏谢鸣宇陆栋宁李晶心陈超蔡建何世民李勇刘贺龙
Owner BEIJING INST OF CONTROL ENG
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