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Ke Zhang,Vincent Cocquempot,Bin Jiang 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.3
This paper addresses an adjustable parameter (AP)-based multi-objective fault estimation design forcontinuous-time/discrete-time dynamic systems. First, a fault estimation observer with AP is constructed to on-lineidentify the size of occurred faults. The fault estimation design not only possesses a wider application comparedwith adaptive observers, but also uses the current output information to enhance fault estimation performance. Then a multi-objective approach is proposed to determine the gain matrices of fault estimation observer. Moreover,fault estimation results with the slack-variable technique are obtained to further reduce the conservatism. Finally,simulation results of an aircraft application are presented to illustrate the effectiveness of our contribution.
Adaptive Observer-based Fast Fault Estimation
Ke Zhang,Bin Jiang,Vincent Cocquempot 제어로봇시스템학회 2008 International Journal of Control, Automation, and Vol.6 No.3
This paper studies the problem of fault estimation using adaptive fault diagnosis observer. A fast adaptive fault estimation (FAFE) approximator is proposed to improve the rapidity of fault estimation. Then based on linear matrix inequality (LMI) technique, a feasible algorithm is explored to solve the designed parameters. Furthermore, an extension to sensor fault case is investigated. Finally, simulation results are presented to illustrate the efficiency of the proposed FAFE methodology.
Adaptive Fault Tolerant Synchronization with Unknown Propagation Delays and Actuator Faults
Qikun Shen,Bin Jiang,Vincent Cocquempot 제어·로봇·시스템학회 2012 International Journal of Control, Automation, and Vol.10 No.5
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.
Fault Detection for Discrete-time Switched Systems with Interval Time-varying Delays
Bin Jiang,Dongsheng Du,Vincent Cocquempot 제어·로봇·시스템학회 2011 International Journal of Control, Automation, and Vol.9 No.2
This paper investigates the problem of fault detection filter design for discrete-time switched systems with interval time-varying delays. The residual generator is constructed based on a mode-dependent fault detection filter, i.e., the designed fault detection filter is also a switched system as well. By constructing a novel switched Lyapunov functional, a new criterion is obtained for the residual system. Based on this, a sufficient condition for the existence of the above filter is established in terms of linear matrix inequalities (LMIs). The designed fault detection filter can guarantee the difference between the generated residual signal and the fault signal as small as possible. An example is provided to illustrate the effectiveness of the proposed method.