AbstractThe dynamic characteristics and performance evaluation for the part strut failure of the vibration isolation platform are presented in this paper. The first step provides and mathematically describes two types of strut failure: fractured and stuck. Secondly, the dynamic model of the vibration isolation platform, which considers the part strut failure, is established using the Newton-Euler method and a constraint equation to evaluate its dynamic characteristics and performance. Then, with reasonable assumptions, the dynamic model of the satellite, which has a vibration isolation platform and vibration sources (such as control moment gyros) of three working situations (without and with two types of strut failure), is simplified to analyse the frequency domain characteristic and coupling characteristic with the attitude control system. Finally, a numerical simulation is used to study the effect of the vibration isolation platform with part strut failure on the attitude control and stabilization, and the attitude control performance is evaluated.

    HighlightsTwo kinds of part strut failure in a vibration isolation platform are discussed.Constraint equation and Newton-Euler method are used.Dynamic model of the vibration isolation platform with CMG is formulated.Time- and frequency-domain characteristics of the VIP are discussed.The effect of part strut failure on the attitude control is discussed.


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    Title :

    Dynamic characteristics and performance evaluation for the part strut failure of the vibration isolation platform on satellites


    Contributors:
    Zhang, Yao (author) / Sheng, Chao (author) / Guo, Zixi (author) / Wang, Youyi (author) / Li, Wenbo (author)

    Published in:

    Acta Astronautica ; 133 ; 403-415


    Publication date :

    2016-10-24


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English