Observer‐based fault diagnosis and self‐restore control for systems with measurement delays

The problems of fault diagnosis and fault-tolerant control are considered for systems with measurement delays. In contrast to the present fault diagnosis and fault-tolerant control approaches, which consider only the input delay and/or state delay, the main contribution of this paper consists of proposing a new observer-based reduced-order fault diagnoser construction approach and a design approach to dynamic self-restore fault-tolerant control law for systems with measurement delays. First, the time-delay system is transformed into a delay-free system in form by a special functional-based delay-free transformation approach for measurement delays. Then, the fault diagnosis is realized online via the proposed reduced-order fault diagnoser. Using the results of fault diagnosis, two dynamic self-restore control laws are designed to make the system isolated from faults. A numerical example demonstrates the feasibility and validity of the proposed scheme. © 2012 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society

[1]  J. Li,et al.  Optimal fault diagnosis for systems with delayed measurements , 2008 .

[2]  Tae Kyeong Yeu,et al.  Model-based fault detection and isolation in steer-by-wire vehicle using sliding mode observer , 2009 .

[3]  Jason L. Speyer,et al.  Optimal stochastic fault detection filter , 2003, Autom..

[4]  Khashayar Khorasani,et al.  Robust fault detection and isolation of time-delay systems using a geometric approach , 2009, Autom..

[5]  Ke Zhang,et al.  Fast adaptive fault estimation and accommodation for nonlinear time‐varying delay systems , 2009 .

[6]  Christopher Edwards,et al.  Disturbance decoupled fault reconstruction using sliding mode observers , 2010 .

[7]  Qing Wu,et al.  Robust Fault Diagnosis of a Satellite System Using a Learning Strategy and Second Order Sliding Mode Observer , 2010, IEEE Systems Journal.

[8]  Zhiwei Gao,et al.  High-Gain Estimator and Fault-Tolerant Design With Application to a Gas Turbine Dynamic System , 2007, IEEE Transactions on Control Systems Technology.

[9]  Hao Ye,et al.  Observer-Based Fast Rate Fault Detection for a Class of Multirate Sampled-Data Systems , 2007, IEEE Transactions on Automatic Control.

[10]  Da-Wei Gu,et al.  A robust fault-detection approach with application in a rolling-mill process , 2003, IEEE Trans. Control. Syst. Technol..

[11]  Bin Jiang,et al.  Fault Estimation and Accommodation for Networked Control Systems with Transfer Delay , 2007 .

[12]  S. Shankar Sastry,et al.  Special issue on “Networked Embedded Hybrid Control Systems” , 2008 .

[13]  Zhiwei Gao,et al.  Descriptor observer approaches for multivariable systems with measurement noises and application in fault detection and diagnosis , 2006, Syst. Control. Lett..

[14]  Guang-Hong Yang,et al.  A finite frequency domain approach to fault detection observer design for linear continuous‐time systems , 2008 .

[15]  Qinghua Zhang,et al.  Nonlinear system fault diagnosis based on adaptive estimation , 2004, Autom..