Fault detection by using the innovation signal: application to an exothermic reaction

Chetouani, Yahya

doi:10.1016/j.cep.2004.02.002

Cited by 30 publications

(31 citation statements)

References 23 publications

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“…In their basic formulation they suffer from missing ability to handle faulty sensors. Some approaches have been proposed to overcome this drawback [6,10]. In the context of safety cages, multisensor data fusion will be used to improve the knowledge about the system.…”

Section: Sensor Fusion and Failure Detectionmentioning

confidence: 99%

Safe Automotive Software

Heckemann

Gesell²,

Pfister

et al. 2011

Lecture Notes in Computer Science

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Abstract. For automotive manufacturers and tier-1 suppliers, the upcoming safety standard ISO 26262 results in new requirements for the development of embedded electronics and software. In particular, the variety of driver assistance systems that autonomously influence the driving dynamics of a vehicle may have a high risk potential and require development in accordance with the normative guidelines. But especially for those systems whose function is typically not based solely on hardware but on complex software algorithms, safety certification can be very complex or even impossible. In this paper the problems of development of vehicle systems according to ISO 26262 are described. Finally an approach for a safety-oriented reference architecture is presented that introduces adaptive software safety cages. This architecture enables application of formal verification methods. Supported by multisensor data fusion this allows to reduce safety requirements for vehicle control systems.

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Section: Sensor Fusion and Failure Detectionmentioning

confidence: 99%

Safe Automotive Software

Heckemann

Gesell²,

Pfister

et al. 2011

Lecture Notes in Computer Science

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“…A dynamic process can be described mathematically in several ways (Chetouani Y., 2004); let us consider the linear stochastic system; the model can be described with the following discrete form:…”

Section: Kalman Filtermentioning

confidence: 99%

“…Others used existing approaches such the classic ones to develop their performance for new complex systems (Sotomayor O.A.Z. & al., 2005), (Chetouani Y., 2004) and . Several fault diagnosis approaches have been proposed for processes operating mainly in steady-state conditions.…”

Section: Introductionmentioning

confidence: 99%

“…strongly rely on the availability of an explicit analytical model to perform the FDI of the process. In (Chetouani Y., 2004) and (Chetouani Y. & al., 2002), the measurements of a set of process variables (from chemical reactor) are compared to the corresponding estimates, predicted via the mathematical model of the system.…”

Section: Introductionmentioning

confidence: 99%

“…For this purpose, Luenberger observers, Unknown Input Observers and Extended Kalman Filters (UIOEKF) have been mostly used in fault detection and identification for chemical processes. A Luenberger observer is used for sensor fault detection and isolation in chemical batch reactors in (Chetouani Y., 2004), while in (Chetouani Y. & al., 2002), the robust approach is compared with an adaptive observer for actuator fault diagnosis.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Monitoring of Chemical Processes Using Model-Based Approach

Elhsoumi¹,

Harabi²,

Naoui³

et al. 2011

Numerical Simulations of Physical and Engineering Processes

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Model‐based fault diagnosis for safety‐critical chemical reactors: An experimental study

Du,

Wilhite,

Kravaris

2024

AIChE Journal

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This article presents an experimental application of fault detection, isolation, and estimation in a chemical reactor system, introducing a functional observer‐based approach without the need for linear approximation. The residual signal generators, functioning as disturbance‐decoupled functional observers, provide fault size estimates and enable fault isolation through multiple generators operating independently. The experimental study focuses on the 3‐Picoline oxidation process, deriving a discrete‐time model, and constructing specific residual generators for coolant inlet temperature and feed concentration faults. Fault diagnosis employs Fast Fourier Transform (FFT) filtering and Generalized Likelihood Ratio (GLR), facilitating on‐the‐fly detection during the experiment. The effectiveness of fault detection, disturbance decoupling, and estimation is experimentally validated.

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Fault detection by using the innovation signal: application to an exothermic reaction

Cited by 30 publications

References 23 publications

Safe Automotive Software

Safe Automotive Software

Monitoring of Chemical Processes Using Model-Based Approach

Model‐based fault diagnosis for safety‐critical chemical reactors: An experimental study

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