Observer design and fault diagnosis for retarded dynamical systems

Yang, Hanlong; Saif, Mehrdad

doi:10.1109/cdc.1996.572627

Cited by 26 publications

(12 citation statements)

References 10 publications

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“…Therefore, increasing attention has recently been devoted to the robust fault detection filter (RFDF) design problems of the linear state delayed systems; see for example Yang and Saif (1997), Ding et al (2001) and Kim and Kim (2001). In Kim and Kim (2001), by using H 1 control theory, a robust fault detection scheme was proposed for a class of discrete time-delay systems with uncertainty.…”

Section: Introductionmentioning

confidence: 99%

“…Contrary to Kim and Kim (2001), Ding et al (2001) only considered the sensitivity of the residual to the faults when the reference residual model was designed. A reduced-order observer was designed in Yang and Saif (1997) to detect the fault for state-retarded systems. The coordinate transformation method was used to design the observer and the sensor and actuator failure detection problem was studied in Yang and Saif (1997).…”

Section: Introductionmentioning

confidence: 99%

“…A reduced-order observer was designed in Yang and Saif (1997) to detect the fault for state-retarded systems. The coordinate transformation method was used to design the observer and the sensor and actuator failure detection problem was studied in Yang and Saif (1997).…”

Section: Introductionmentioning

confidence: 99%

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RFDF design for linear time-delay systems with unknown inputs and parameter uncertainties

Bai¹,

Tian²,

Song-jiao³

2007

International Journal of Systems Science

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The robust fault detection filter (RFDF) design problems are studied for linear time-delay systems with both unknown inputs and parameter uncertainties. Firstly, a reference residual model is introduced to formulate the RFDF design problem as an H 1 model-matching problem. The reference residual model presented in this article is assumed to be an optimal residual generator without uncertainties, which takes into account the robustness against disturbances and sensitivity to faults simultaneously. Then applying robust H 1 optimization control technique, the existence conditions of the RFDF for linear uncertain time-delay systems are presented in terms of linear matrix inequality (LMI) formulation, independently of time delay. In order to detect the fault, an adaptive threshold which depends on the inputs and can be calculated on-line is finally determined. An illustrative design example is used to demonstrate the validity and applicability of the proposed approach.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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RFDF design for linear time-delay systems with unknown inputs and parameter uncertainties

Bai¹,

Tian²,

Song-jiao³

2007

International Journal of Systems Science

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“…There are several books published to capture different approaches to the stability and design of time-delay systems [15]- [17]. The problem of designing an asymptotic observer for timedelay systems has been solved by many authors in the past for different purposes (see [1], [6], [7], [8], [19] and the references therein). Some papers have developed observer-based controllers for time-delay systems (see for example [11]), but the delay is considered in state variables only and the observer design requires the solution of a pair of algebraic Riccati-like equations.…”

Section: Introductionmentioning

confidence: 99%

Robust PI observer design for linear time-delay systems

Sadaka

Shafai

Sipahi

2009

2009 IEEE International Conference on Control Applications

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A method for H∞ Proportional-Integral (PI) observer design for linear time-delay systems is proposed in this paper. The design method involves attenuating of the disturbance to a pre-specified level while estimating the states of the delay system. The PI observer design requires solving certain algebraic Riccati equation. Although the PI observer for time delay system is used for disturbance attenuation in this paper, it has the advantage of using it in estimating the disturbance or fault as well as other scenarios in robust control applications. The main result of the paper is the derivation of PI observer for system with one delay; however, its generalization for two delays is also outlined. Illustrative examples are included to support the theoretical results.

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“…In [15], [16], an unknown input observer (UIO) is designed for FDI and [17] proposed a robust UIO approach for uncertain retarded timedelay systems with bounded uncertainty. In this work, some assumptions on the system structures are considered.…”

Section: Introductionmentioning

confidence: 99%

A geometric approach to Fault Detection and Isolation of neutral time-delay systems

Meskin

Khorasani

2008

2008 American Control Conference

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This paper investigates development of Fault Detection and Isolation (FDI) filters for neutral time-delay systems. A bank of residual generators is designed such that each residual is affected by one fault and is decoupled from the others while the H∞ norm of the transfer function between the disturbance and the residual signals are less that a prespecified value. Simulation results presented in the paper demonstrate the effectiveness of our proposed FDI algorithm.

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Observer design and fault diagnosis for retarded dynamical systems

Cited by 26 publications

References 10 publications

RFDF design for linear time-delay systems with unknown inputs and parameter uncertainties

RFDF design for linear time-delay systems with unknown inputs and parameter uncertainties

Robust PI observer design for linear time-delay systems

A geometric approach to Fault Detection and Isolation of neutral time-delay systems

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