TY - JOUR
T1 - Dynamics of flexible multibody systems with variable-speed control moment gyroscopes
AU - Feng, Xiao
AU - Jia, Yinghong
AU - Xu, Shijie
N1 - Publisher Copyright:
© 2018 Elsevier Masson SAS
PY - 2018/8
Y1 - 2018/8
N2 - This paper presents a generic global matrix formulation for the dynamics of flexible multibody systems with variable-speed control moment gyroscopes (VSCMGs). The flexible bodies are assumed to exhibit only small deformation, and they are connected in a tree topology by hinges permitting large rotation and translation. A cluster of VSCMGs is mounted on each body for actuation; it is assumed that the VSCMGs are statically and dynamically balanced, and their rotors are axisymmetric. A minimum set of dynamic equations are derived systematically via a mixed use of Kane's method and Newton–Euler equations. The parameters of each flexible body are augmented to take into account the inertias of the attached VSCMGs. Moreover, a skew-symmetric gyroscopic matrix and three control-input-mapping matrices are defined to represent the passive and the active gyroscopic torques of the VSCMGs in a global matrix manner. Three examples are given to show the usefulness, versatility, and correctness of the proposed formulation. As an additional contribution, also presented are linear dynamic equations for a spacecraft with flexible appendages and embedded VSCMGs.
AB - This paper presents a generic global matrix formulation for the dynamics of flexible multibody systems with variable-speed control moment gyroscopes (VSCMGs). The flexible bodies are assumed to exhibit only small deformation, and they are connected in a tree topology by hinges permitting large rotation and translation. A cluster of VSCMGs is mounted on each body for actuation; it is assumed that the VSCMGs are statically and dynamically balanced, and their rotors are axisymmetric. A minimum set of dynamic equations are derived systematically via a mixed use of Kane's method and Newton–Euler equations. The parameters of each flexible body are augmented to take into account the inertias of the attached VSCMGs. Moreover, a skew-symmetric gyroscopic matrix and three control-input-mapping matrices are defined to represent the passive and the active gyroscopic torques of the VSCMGs in a global matrix manner. Three examples are given to show the usefulness, versatility, and correctness of the proposed formulation. As an additional contribution, also presented are linear dynamic equations for a spacecraft with flexible appendages and embedded VSCMGs.
KW - Flexible multibody dynamics
KW - Global matrix formulation
KW - Spacecraft dynamics
KW - Variable-speed control moment gyroscopes
UR - https://www.scopus.com/pages/publications/85048925634
U2 - 10.1016/j.ast.2018.06.004
DO - 10.1016/j.ast.2018.06.004
M3 - 文章
AN - SCOPUS:85048925634
SN - 1270-9638
VL - 79
SP - 554
EP - 569
JO - Aerospace Science and Technology
JF - Aerospace Science and Technology
ER -