Dynamics Modeling and Induced Vibration Analysis of Momentum Wheel for Control Moment Gyros

Jong-Oh PARK  Shi-Hwan OH  Ki-Lyuk YONG  Young-Do IM  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E94-A   No.3   pp.990-994
Publication Date: 2011/03/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E94.A.990
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Noise and Vibration
Keyword: 
disturbance,  attitude control,  Control Moment Gyros,  analytic modeling,  

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Summary: 
Actuator-induced disturbances are among the most crucial factors in correct spacecraft attitude pointing and stability for fine attitude control problems. In order to develop a CMG as an actuator for fine controls, CMG-induced disturbances should be analyzed. Therefore, this paper aims to develop an analytic model that predicts the effect of disturbances to CMGs by assuming static and dynamic imbalances. The proposed analytical model with respect to the disturbances of a CMG is derived using the Lagrange energy method based on the small-signal assumption.