Stabilization of Robots with a Regulator Containing the Sigmoid Mapping

Dany Ivan Martinez, Jose Jesus De Rubio, Tomas Miguel Vargas, Victor Garcia, Genaro Ochoa, Ricardo Balcazar, David Ricardo Cruz, Arturo Aguilar, Juan Francisco Novoa, Carlos Aguilar-Ibanez

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Actuators nonlinearities are unknown external perturbations in robots, which are unwanted because they can severely limit their performance. This research is focused on the stabilization of robots subject to actuators nonlinearities with a regulator containing the sigmoid mapping. Our regulator has the following three main characteristics: a) a sigmoid mapping is used to ensure boundedness of the regulator law terms, b) the chattering is reduced by the usage of the saturation mapping instead of the signum mapping, and c) the stabilization is ensured by the Lyapunov analysis. Finally, we evaluate our regulator for the stabilization of two robots.

Original languageEnglish
Article number9091178
Pages (from-to)89479-89488
Number of pages10
JournalIEEE Access
Volume8
DOIs
StatePublished - 2020

Keywords

  • Mapping
  • Regulator
  • Robot
  • Sigmoid
  • Stabilization

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