Fault tolerant control using virtual actuator for continuous-time Lipschitz nonlinear systems

Mohammad Javad Khosrowjerdi, Soheila Barzegary

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this brief, we extend the existing results on fault tolerant control via virtual actuator approach to a class of systems with Lipschitz nonlinearities to maintain the closed-loop stability after actuator faults. This generalization is established by relying on the input-to-state stability properties of cascaded systems. The virtual actuator block, placed between faulty plant and nominal controller, generates useful input signals for faulty plant by using output signals of the nominal controller to guarantee the closed-loop stability in the presence of actuator faults. This design problem is reduced to a matrix inequality that can be turned to an LMI by fixing a variable to a constant value and solving the resulting LMI feasibility problem. The proposed fault tolerant control method is successfully evaluated using a nonlinear system.

Original languageEnglish
Pages (from-to)2597-2607
Number of pages11
JournalInternational Journal of Robust and Nonlinear Control
Volume24
Issue number16
DOIs
Publication statusPublished - Nov 10 2014
Externally publishedYes

Fingerprint

Nonlinear systems
Actuators
Controllers

Keywords

  • Actuator faults
  • Control reconfiguration
  • Fault-tolerant control
  • Input-to-state stability (ISS)
  • Lipschitz nonlinear systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Aerospace Engineering
  • Biomedical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Fault tolerant control using virtual actuator for continuous-time Lipschitz nonlinear systems. / Khosrowjerdi, Mohammad Javad; Barzegary, Soheila.

In: International Journal of Robust and Nonlinear Control, Vol. 24, No. 16, 10.11.2014, p. 2597-2607.

Research output: Contribution to journalArticle

Khosrowjerdi, Mohammad Javad ; Barzegary, Soheila. / Fault tolerant control using virtual actuator for continuous-time Lipschitz nonlinear systems. In: International Journal of Robust and Nonlinear Control. 2014 ; Vol. 24, No. 16. pp. 2597-2607.
@article{73cd0f96dc6e45ea8dfb542883dc852c,
title = "Fault tolerant control using virtual actuator for continuous-time Lipschitz nonlinear systems",
abstract = "In this brief, we extend the existing results on fault tolerant control via virtual actuator approach to a class of systems with Lipschitz nonlinearities to maintain the closed-loop stability after actuator faults. This generalization is established by relying on the input-to-state stability properties of cascaded systems. The virtual actuator block, placed between faulty plant and nominal controller, generates useful input signals for faulty plant by using output signals of the nominal controller to guarantee the closed-loop stability in the presence of actuator faults. This design problem is reduced to a matrix inequality that can be turned to an LMI by fixing a variable to a constant value and solving the resulting LMI feasibility problem. The proposed fault tolerant control method is successfully evaluated using a nonlinear system.",
keywords = "Actuator faults, Control reconfiguration, Fault-tolerant control, Input-to-state stability (ISS), Lipschitz nonlinear systems",
author = "Khosrowjerdi, {Mohammad Javad} and Soheila Barzegary",
year = "2014",
month = "11",
day = "10",
doi = "10.1002/rnc.3002",
language = "English",
volume = "24",
pages = "2597--2607",
journal = "International Journal of Robust and Nonlinear Control",
issn = "1049-8923",
publisher = "John Wiley and Sons Ltd",
number = "16",

}

TY - JOUR

T1 - Fault tolerant control using virtual actuator for continuous-time Lipschitz nonlinear systems

AU - Khosrowjerdi, Mohammad Javad

AU - Barzegary, Soheila

PY - 2014/11/10

Y1 - 2014/11/10

N2 - In this brief, we extend the existing results on fault tolerant control via virtual actuator approach to a class of systems with Lipschitz nonlinearities to maintain the closed-loop stability after actuator faults. This generalization is established by relying on the input-to-state stability properties of cascaded systems. The virtual actuator block, placed between faulty plant and nominal controller, generates useful input signals for faulty plant by using output signals of the nominal controller to guarantee the closed-loop stability in the presence of actuator faults. This design problem is reduced to a matrix inequality that can be turned to an LMI by fixing a variable to a constant value and solving the resulting LMI feasibility problem. The proposed fault tolerant control method is successfully evaluated using a nonlinear system.

AB - In this brief, we extend the existing results on fault tolerant control via virtual actuator approach to a class of systems with Lipschitz nonlinearities to maintain the closed-loop stability after actuator faults. This generalization is established by relying on the input-to-state stability properties of cascaded systems. The virtual actuator block, placed between faulty plant and nominal controller, generates useful input signals for faulty plant by using output signals of the nominal controller to guarantee the closed-loop stability in the presence of actuator faults. This design problem is reduced to a matrix inequality that can be turned to an LMI by fixing a variable to a constant value and solving the resulting LMI feasibility problem. The proposed fault tolerant control method is successfully evaluated using a nonlinear system.

KW - Actuator faults

KW - Control reconfiguration

KW - Fault-tolerant control

KW - Input-to-state stability (ISS)

KW - Lipschitz nonlinear systems

UR - http://www.scopus.com/inward/record.url?scp=84911995064&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84911995064&partnerID=8YFLogxK

U2 - 10.1002/rnc.3002

DO - 10.1002/rnc.3002

M3 - Article

VL - 24

SP - 2597

EP - 2607

JO - International Journal of Robust and Nonlinear Control

JF - International Journal of Robust and Nonlinear Control

SN - 1049-8923

IS - 16

ER -