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author:

Liang, J. (Liang, J..) [1] | Wang, Y. (Wang, Y..) [2] | Zhong, H. (Zhong, H..) [3] | Chen, Y. (Chen, Y..) [4] (Scholars:陈彦杰) | Li, H. (Li, H..) [5] | Mao, J. (Mao, J..) [6] | Wang, W. (Wang, W..) [7]

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Scopus

Abstract:

This article investigates a robust variable impedance control methodology for aerial manipulators to realize compliant and safe interaction tasks. Considering that the stability characteristics are generally overlooked in existing variable impedance controllers of the aerial manipulator, state-independent stability conditions are applied for time-varying impedance profiles to ensure the exponential stability of the desired variable impedance dynamics (DVID) as well as the boundedness of the state variables in the DVID. A command trajectory variable is introduced for converting the impedance control issue to a particular tracking issue, and then, a robust variable impedance controller based on the wrench estimator is designed to guarantee the exponential convergence of the translational states and impedance error of the aerial manipulator. The designed impedance controller is structurally simple and results in low implementation costs. Next, an improved attitude control approach with the command filter is developed for global flight attitude stability without any singularities or ambiguities, where the filter is introduced to avoid computing the derivative signals of the generalized force input. Finally, the effectiveness of the proposed control method is illustrated via numerical simulations and interaction experiments with different targets in real scenarios. IEEE

Keyword:

Aerial compliant interaction Convergence Force Impedance Manipulator dynamics Numerical stability robust variable impedance control stability conditions Stability criteria Task analysis variable impedance dynamics

Community:

  • [ 1 ] [Liang J.]College of Electrical and Information Engineering, Hunan University, Changsha, China
  • [ 2 ] [Wang Y.]College of Electrical and Information Engineering, Hunan University, Changsha, China
  • [ 3 ] [Zhong H.]School of Robotics, Hunan University, Changsha, China
  • [ 4 ] [Chen Y.]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
  • [ 5 ] [Li H.]Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao, China
  • [ 6 ] [Mao J.]College of Electrical and Information Engineering, Hunan University, Changsha, China
  • [ 7 ] [Wang W.]School of Architecture and Planning, Hunan University, Changsha, China

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Source :

IEEE Transactions on Industrial Informatics

ISSN: 1551-3203

Year: 2023

Issue: 3

Volume: 20

Page: 1-10

1 1 . 7

JCR@2023

1 1 . 7 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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