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author:

Dong, Qiuhuang (Dong, Qiuhuang.) [1] | Chen, Li (Chen, Li.) [2] (Scholars:陈力)

Indexed by:

EI Scopus

Abstract:

The main issue of this paper is about the space robot capture operation. The stabilization control and vibration suppression control of the rigid-flexible coupling space manipulator during capture debris is presented in this paper. Firstly, The dynamical model of the space robot system is derived with Lagrange formula. The debris is considered as a rigid body, the dynamic model of the debris is derived with the Newton-Euler method. Secondly, base on the dynamic models of the space robot and debris, the impact effect is calculated from the momentum principle during the capture operation. After the successfully capture, the initial momentum of the debris has a new distribution in the space robot and debris combined system, this will cause the motion state of the space robot and debris combined system change, the attitude of the space robot base will change, the components of the combined system will interfere, the flexible link will vibrate, all these will cause great harm for the combined system after capture. Thirdly, this paper aim at the above problems after the capture operation, the dynamic model of the combined is derived which is base on the above dynamic models of the space robot and debris before the capture, and then the combination system dynamic model is divided into two parts base on the singular perturbation theory, one part is the slowly varying system which represent the rigid motion, the other part is the rapidly varying system which represent the flexible vibration. At last, the RBF neural network compensate control base on the slowly varying system dynamic model is employed to control the stabilization control of the combined system after capture operation, and the Linear Quadrics optimal control base on the rapidly varying system is employed to suppress the vibration of the flexible link, the above control methods are employed at the same time. The computer simulation is presented, the result verify the feasibility of the above control method. Copyright © (2012) by the International Astronautical Federation.

Keyword:

Dynamic models Flexible couplings Flexible manipulators Perturbation techniques Robotic arms Spacecraft equipment Space debris Stabilization

Community:

  • [ 1 ] [Dong, Qiuhuang]Fuzhou University, China
  • [ 2 ] [Chen, Li]Fuzhou University, China

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Source :

ISSN: 0074-1795

Year: 2012

Volume: 3

Page: 2398-2406

Language: English

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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