基于单框架磁悬浮控制力矩陀螺的敏捷卫星建模及对转子的扰动力前馈补偿研究。

Research on modeling of the agile satellite using a single gimbal magnetically suspended CMG and the disturbance feedforward compensation for rotors.

机构信息

School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China.

出版信息

Sensors (Basel). 2012 Dec 12;12(12):16964-87. doi: 10.3390/s121216964.

DOI:10.3390/s121216964

PMID:23235442

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3571821/

Abstract

The magnetically suspended Control Moment Gyroscope (CMG) has the advantages of long-life, micro-vibration and being non-lubricating, and is the ideal actuator for agile maneuver satellite attitude control. However, the stability of the rotor in magnetic bearing and the precision of the output torque of a magnetically suspended CMG are affected by the rapid maneuvers of satellites. In this paper, a dynamic model of the agile satellite including a magnetically suspended single gimbal control moment gyroscope is built and the equivalent disturbance torque effected on the rotor is obtained. The feedforward compensation control method is used to depress the disturbance on the rotor. Simulation results are given to show that the rotor displacement is obviously reduced.

摘要

磁悬浮控制力矩陀螺（CMG）具有长寿命、微振动和无润滑的优点，是敏捷卫星姿态控制的理想执行机构。然而，磁悬浮轴承中转子的稳定性和磁悬浮 CMG 的输出扭矩精度受到卫星快速机动的影响。本文建立了包含磁悬浮单框架控制力矩陀螺的敏捷卫星动力学模型，得到了作用在转子上的等效干扰力矩。采用前馈补偿控制方法抑制转子上的干扰。仿真结果表明，转子的位移明显减小。