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Disturbance Observer-Based High-Order Fully Actuated Robust Control of Uncertain Robotic Systems

  • Harbin Institute of Technology
  • Southwest Jiaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Model uncertainties and external disturbances significantly impact the performance of trajectory tracking control in robotic systems. This paper proposes a novel control strategy based on high-order fully actuated (HOFA) system theoretical methods. The robotic system with nonlinear properties is transformed into a closed-loop linear system by pseudo-linear parameter design. The tracking controller is designed for the linearized system by combining robust control methods. Recognizing the system's susceptibility to disturbances during operation, a nonlinear disturbance observer (NDO) is designed to estimate and compensate for the lumped disturbances, and the stability of the system is demonstrated. Finally, comparative simulations based on the UR5 robot validate the effectiveness of the proposed control strategy.

Original languageEnglish
Title of host publicationProceedings of the 3rd Conference on Fully Actuated System Theory and Applications, FASTA 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages713-718
Number of pages6
ISBN (Electronic)9798350373691
DOIs
StatePublished - 2024
Event3rd Conference on Fully Actuated System Theory and Applications, FASTA 2024 - Shenzhen, China
Duration: 10 May 202412 May 2024

Publication series

NameProceedings of the 3rd Conference on Fully Actuated System Theory and Applications, FASTA 2024

Conference

Conference3rd Conference on Fully Actuated System Theory and Applications, FASTA 2024
Country/TerritoryChina
CityShenzhen
Period10/05/2412/05/24

Keywords

  • High-order fully actuated system
  • Robotic systems
  • Robust control
  • Trajectory tracking

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