一种抑制反作用轮低速摩擦对卫星姿态扰动的方法

空间控制技术与应用 ›› 2008, Vol. 34 ›› Issue (2): 55-58.

一种抑制反作用轮低速摩擦对卫星姿态扰动的方法

北京控制工程研究所

出版日期:2008-04-25 发布日期:2021-12-11
基金资助:
国家自然科学基金 (60034010, 60704014, 10372015)及973计划 (2002cb312205) 资助项目;

A Method for Reducing Reaction Wheel Low-Speed Friction Disturbance to Satellite Attitude

Beijing institute of Control Engineering

Online:2008-04-25 Published:2021-12-11

摘要/Abstract

摘要： 在现代卫星的姿态控制系统中, 反作用轮得到了广泛应用。但是当反作用轮的转速过零时, 摩擦力矩会对卫星的姿态产生较大影响。本文采用基于特征模型的黄金分割自适应控制方法, 建立了包括反作用轮在内的卫星系统的特征模型, 并由此设计了控制律。仿真结果表明, 该方法可以有效抑制反作用轮低速摩擦对卫星姿态的扰动, 从而可以提高卫星姿态控制精度。

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Abstract:

Reaction wheels are widely used in the modern spacecraft attitude control systems.But when the speed ofreaction wheel is crossing zero, the friction moment produced by reaction wheel may seriously affect the accuracy of satellite attitude control.This paper presents a golden-section adaptive control method which is based on the characteristic modeling, and builds the characteristic model of satellite systems including reaction wheels, then designs the control laws.The simulation results indicate that the approach can reduce the friction moment influence on attitude control accuracy and stability and, therefore, improve the accuracy of the attitude control.

Key words:

font-size:10.5pt, font-family:Calibri, sans-serif, "> color:windowtext, attitude control')">">attitude control, low-speed friction, characteristic modeling, all-coefficient adaptive control,

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中图分类号:

V448.22

丁建钊. 一种抑制反作用轮低速摩擦对卫星姿态扰动的方法[J]. 空间控制技术与应用, 2008, 34(2): 55-58.

DING Jianzhao. A Method for Reducing Reaction Wheel Low-Speed Friction Disturbance to Satellite Attitude[J]. Aerospace Contrd and Application, 2008, 34(2): 55-58.