Regular Papers

International Journal of Control, Automation and Systems 2012; 10(5): 883-889

Published online September 30, 2012

https://doi.org/10.1007/s12555-012-0503-5

© The International Journal of Control, Automation, and Systems

Adaptive Fault Tolerant Synchronization with Unknown Propagation Delays and Actuator Faults

Qikun Shen, Bin Jiang*, and Vincent Cocquempot

Nanjing University of Aeronautics and Astronautics

Abstract

The paper addresses a practical issue in adaptive fault tolerant synchronization of master-slave systems with a constant signal propagation delay and actuator faults. First, a new concept of chaos synchronization is proposed, where the real value of the propagation delay can be estimated online by a proper adaptation mechanism; then, a novel adaptive fault estimation algorithm is proposed which removes the classical assumption that the time-derivative of the output errors should be known. Further, based on a proper Lyapunov-Krasovskii function, a novel delay-dependent adaptive fault tolerant synchronization scheme is proposed where the synchronization criterion is derived. Finally, simulation results of the chaotic system demonstrate the effectiveness of the proposed approach.

Keywords Adaptive control, fault tolerant, synchronization, time delay.

Article

Regular Papers

International Journal of Control, Automation and Systems 2012; 10(5): 883-889

Published online October 1, 2012 https://doi.org/10.1007/s12555-012-0503-5

Copyright © The International Journal of Control, Automation, and Systems.

Adaptive Fault Tolerant Synchronization with Unknown Propagation Delays and Actuator Faults

Qikun Shen, Bin Jiang*, and Vincent Cocquempot

Nanjing University of Aeronautics and Astronautics

Abstract

The paper addresses a practical issue in adaptive fault tolerant synchronization of master-slave systems with a constant signal propagation delay and actuator faults. First, a new concept of chaos synchronization is proposed, where the real value of the propagation delay can be estimated online by a proper adaptation mechanism; then, a novel adaptive fault estimation algorithm is proposed which removes the classical assumption that the time-derivative of the output errors should be known. Further, based on a proper Lyapunov-Krasovskii function, a novel delay-dependent adaptive fault tolerant synchronization scheme is proposed where the synchronization criterion is derived. Finally, simulation results of the chaotic system demonstrate the effectiveness of the proposed approach.

Keywords: Adaptive control, fault tolerant, synchronization, time delay.

IJCAS
May 2024

Vol. 22, No. 5, pp. 1461~1759

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