A Robust IDA-PBC Approach for Handling Uncertainties in Underactuated Mechanical Systems

Mutaz Ryalat, Dina Shona Laila

Research output: Contribution to journalArticle

9 Citations (Scopus)
44 Downloads (Pure)

Abstract

Interconnection and damping assignment passivity based control (IDA-PBC) is a method that has been developed to (asymptotically) stabilize nonlinear systems formulated in port-controlled Hamiltonian (PCH) structure. This method has gained increasing popularity and has been successfully applied to a wide range of dynamical systems. However, little is known about the robustness of this method in response to the effects of uncertainty which could result from disturbances, noises, and modeling errors. This paper explores the possibility of extending some energy shaping methods, taking into account the robustness aspects, with the aim of maintaining (asymptotic) stability of the system in the presence of perturbations which inevitably exist in any realistic applications. We propose constructive results on robust IDA-PBC controllers for underactuated mechanical systems that are quite commonly found in practice and have the most challenging control problems within this context. The proposed results extend some existing methods and provide a new framework that allows the implementation of integral and input-to-state stability controllers to underactuated mechanical syste
Original languageEnglish
Pages (from-to)3495 - 3502
Number of pages8
JournalIEEE Transactions on Automatic Control
Volume63
Issue number10
Early online date23 Jan 2018
DOIs
Publication statusPublished - 1 Oct 2018

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Keywords

  • Mechanical systems
  • Robustness
  • Damping
  • Asymptotic stability
  • Uncertainty
  • Control systems
  • Stability criteria
  • Hamiltonian systems
  • nonlinear systems
  • passivity-based control
  • robust control
  • input-to-state stability
  • underactuated systems

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