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author:

Fu, X. (Fu, X..) [1] | Ai, H. (Ai, H..) [2] | Chen, L. (Chen, L..) [3]

Indexed by:

Scopus

Abstract:

In the control of space robots, flexible vibrations exist in the base, links and joints. When building a motion control scheme, the following three aspects should be considered: (1) the complexity in dynamic modeling; (2) the low accuracy of motion control and (3) the simultaneous suppression of multiple flexible vibrations. In this paper, we propose a motion vibration integrated saturation control scheme. First, the dynamic model of space robot with flexible-base, flexible-link and flexible-joint is established according to the assumed modes method and Lagrange equation. Second, singular perturbation theory is used to decompose the model into two subsystems: a slow subsystem containing the rigid motions of base and joints as well as the vibration of links, and a fast subsystem containing vibrations of base and joints. Third, an integrated sliding mode control with input restriction, output feedback and repetitive learning (ISMC-IOR) is designed, which can track the desired trajectories of base and joints with -3 orders of magnitude accuracy, while suppressing the multiple flexible vibrations of base, links and joints 50%-80% and 37% performance improvement over ISMC-IOR-NV were achieved. Finally, the algorithm is verified by simulations. ©

Keyword:

FBFLFJ space robot input restriction integrated control for motion and vibration output feedback repetitive learning singular perturbation theory

Community:

  • [ 1 ] [Fu, X.]School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Jiangxi, Nanchang, 330013, China
  • [ 2 ] [Fu, X.]School of Mechanical Engineering and Automation, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 3 ] [Ai, H.]School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Jiangxi, Nanchang, 330013, China
  • [ 4 ] [Ai, H.]School of Mechanical Engineering and Automation, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 5 ] [Chen, L.]School of Mechanical Engineering and Automation, Fuzhou University, Fujian, Fuzhou, 350108, China

Reprint 's Address:

  • [Ai, H.]School of Energy and Mechanical Engineering, Jiangxi, China

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Source :

Robotica

ISSN: 0263-5747

Year: 2023

Issue: 1

Volume: 41

Page: 370-391

1 . 9

JCR@2023

1 . 9 0 0

JCR@2023

ESI HC Threshold:35

JCR Journal Grade:3

CAS Journal Grade:4

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: 3

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