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author:

Cheng, J. (Cheng, J..) [1] | Chen, L. (Chen, L..) [2]

Indexed by:

Scopus CSCD

Abstract:

In this paper, the dynamic evolution for a dualarm space robot capturing a spacecraft is studied, the impact effect and the coordinated stabilization control problem for postimpact closed chain system are discussed. At first, the pre-impact dynamic equations of open chain dual-arm space robot are established by Lagrangian approach, and the dynamic equations of a spacecraft are obtained by Newton-Euler method. Based on the results, the response of the dual-arm space robot impacted by the spacecraft is analyzed by law of conservation of momentum and law of force transfer. The closed chain system is formed in the post-impact phase. Closed chain constraint equations are obtained by the constraints of closed-loop geometry and kinematics. With the closed chain constraint equations, the composite system dynamic equations are derived. Secondly, the recurrent fuzzy neural network control scheme with H ∞ tracking characteristic is designed for stabilization motion of unstable closed chain system with uncertain system parameters. In order to overcome the effects of uncertain system inertial parameters, the recurrent fuzzy neural network is used to approximate the unknown part. According to the Lyapunov theory, the global stability is demonstrated. Meanwhile, the weighted minimum-norm theory is introduced to guarantee the existence of distributed torques that ensure cooperative operation between manipulators. At last, numerical examples simulate the response of the collision, and the efficiency of the control scheme is verified by the simulation results. IEEE

Keyword:

Fuzzy control; Fuzzy neural networks; Jacobian matrices; Manipulators; Mathematical model

Community:

  • [ 1 ] [Cheng, J.]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China, China
  • [ 2 ] [Chen, L.]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China, China

Reprint 's Address:

  • [Cheng, J.]School of Aerospace Engineering, Tsinghua UniversityChina

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Source :

CAA Journal of Automatica Sinica

ISSN: 2329-9266

Year: 2018

Issue: 5

Volume: 7

Page: 1417-1424

1 5 . 3 0 0

JCR@2023

ESI HC Threshold:170

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 15

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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