An adaptive sliding mode control system and its application to real-time hybrid simulation

Hong Wei Li, Amin Maghareh, Johnny Wilfredo Condori Uribe, Herta Montoya, Shirley J. Dyke, Zhaodong Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

Real-time hybrid simulation (RTHS) is intended to serve as a technique able to conduct experiments when the behavior of the plant is not well understood, i.e., when deep uncertainties are present in the physical specimen. By combining strategies from robust control and adaptive control, this paper develops an adaptive sliding mode control (ASMC) system for uncertain control plants. The ASMC consists of a bounded-gain forgetting least-squares estimator and a sliding mode controller, aimed at estimating parameters of the control plant and eliminating the negative effects of estimation errors, respectively. The ASMC is evaluated by applying it to the benchmark control problem in RTHS, where the fifth-order control plant is reduced to a second-order control plant to facilitate the control system's design and execution. High performance and robustness are achieved with the adoption of ASMC. The results demonstrate that an effective ASMC can be designed based on a significantly simplified control plant, making it a potent control system for RTHS.

Original languageEnglish
Article numbere2851
JournalStructural Control and Health Monitoring
Volume29
Issue number1
DOIs
Publication statusPublished - Jan 2022
Externally publishedYes

Keywords

  • adaptive control
  • model uncertainties
  • real-time hybrid simulation
  • robust control
  • sliding mode control

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

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