Decentralized control of collaborative redundant manipulators with partial command coverage via locally connected recurrent neural networks

Shuai Li, Hongzhu Cui, Yangming Li, Bo Liu, Yuesheng Lou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)

Abstract

This paper studies the decentralized control of multiple redundant manipulators for the cooperative task execution problem. Different from existing work with assumptions that all manipulators are accessible to the command signal, we propose in this paper a novel strategy capable of solving the problem even though there exists some manipulators unable to access the command signal directly. The cooperative task execution problem can be formulated as a constrained quadratic programming problem. We start analysis by re-designing the control law proposed in (Li et al. Neurocomputing, 2012), which solves the optimization problem recursively. By replacing the command signal with estimations with neighbor information, the control law becomes to work in the partial command coverage situation. However, the stability and optimality of the new system are not necessarily the same as the original system. We then prove in theory that the system indeed also globally stabilizes to the optimal solution of the constrained quadratic optimization problem. Simulations demonstrate the effectiveness of the proposed method.
Original languageEnglish
Pages (from-to)1051-1060
Number of pages10
JournalNeural Computing and Applications
Volume23
Issue number3-4
DOIs
Publication statusPublished - 1 Sep 2013
Externally publishedYes

Keywords

  • Cooperative task execution
  • Decentralized control
  • Hierarchical tree
  • Quadratic programming
  • Recurrent neural network
  • Redundant manipulator

ASJC Scopus subject areas

  • Artificial Intelligence
  • Software

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