Fault‐tolerant control of process systems using communication networks

El‐Farra, Nael H.; Gani, Adiwinata; Christofides, Panagiotis D.

doi:10.1002/aic.10443

Cited by 61 publications

(41 citation statements)

References 44 publications

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“…However, at this stage, despite the large and growing body of research work on a diverse array of hybrid system problems (for example, 23,24,25,26,27,28 ), the use of a hybrid system framework for the study of fault-tolerant control problems for nonlinear systems subject to constraints has received limited attention. In a previous work, 29 a hybrid systems approach to fault-tolerant control was employed where, under the assumption of full state measurements and knowledge of the fault, stability region-based reconfiguration is implemented to achieve fault-tolerant control.…”

Section: Introductionmentioning

confidence: 99%

Integrated fault‐detection and fault‐tolerant control of process systems

et al. 2006

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Section: Introductionmentioning

confidence: 99%

Integrated fault‐detection and fault‐tolerant control of process systems

et al. 2006

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“…To illustrate how performance and robustness considerations are incorporated in the faulttolerant control design, we introduce in this subsection a benchmark chemical reactor example (also used in References [31,32]). Specifically, consider a well-mixed, non-isothermal continuous stirred tank reactor where three parallel irreversible elementary exothermic reactions of the form A !…”

Section: Motivating Examplementioning

confidence: 99%

“…In Reference [32], the problem of implementing integrated faultdetection and fault-tolerant control was addressed for the state and output feedback cases. The reconfiguration in References [31,32], however, does not incorporate performance or robustness considerations, which can lead to performance-loss or even instability for processes subject to uncertainty.…”

Section: Introductionmentioning

confidence: 97%

“…References [24][25][26][27][28][29][30]), the use of a hybrid system framework for the study of fault-tolerant control problems has received limited attention. In Reference [31], a hybrid systems approach to fault-tolerant control was employed where upon occurrence of a fault, stability region-based reconfiguration is done to achieve fault-tolerant control. In Reference [32], the problem of implementing integrated faultdetection and fault-tolerant control was addressed for the state and output feedback cases.…”

Section: Introductionmentioning

confidence: 99%

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Fault‐tolerant control of nonlinear processes: performance‐based reconfiguration and robustness

Mhaskar

Gani

Christofides

2005

Intl J Robust & Nonlinear

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SUMMARYThis work considers the problem of control system/actuator failures in nonlinear processes subject to input constraints and presents two approaches for fault-tolerant control that focus on incorporating performance and robustness considerations, respectively. In both approaches, first a family of candidate control configurations, characterized by different manipulated inputs, is identified for the process under consideration. Performance considerations are first incorporated via the design of a Lyapunov-based predictive controller that enforces closed-loop stability from an explicitly characterized set of initial conditions (computed using an auxiliary Lyapunov-based nonlinear controller). A hierarchical switching policy is derived, that uses stability considerations (evaluated via the presence of the state in the stability region of a control configuration) to ascertain the suitability of a candidate backup configuration and then performance considerations are again considered in choosing between the suitable backup configurations. Next, we consider the problem of implementing fault-tolerant control to nonlinear processes subject to input constraints and uncertainty. To this end, we first design a robust hybrid predictive controller for each candidate control configuration that guarantees stability from an explicitly characterized set of initial conditions, subject to uncertainty and constraints. A switching policy is then derived to orchestrate the activation/deactivation of the constituent control configurations. Finally, simulation studies are presented to demonstrate the implementation and evaluate the effectiveness of the proposed fault-tolerant control method.

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“…In the developed solutions satisfactory performances are guaranteed in the case of weak interactions among subsystems. Recently, networked distributed control systems for chemical plants have been also developed with signif- q r s t t u r r r s v t w u r r s x w w x r v v s y w u r r r s y w icant results and potential new implementation issues (El-Farra et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Application of a Networked Decentralized MPC to Syngas Process in Oil Industry

Longhi

Trillini

Vaccarini

2005

IFAC Proceedings Volumes

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The performance of a networked decentralized model predictive control is analyzed and tested on an industrial process characterized by strong interactions. The proposed control architecture is based on a set of independent agents which implement independent model predictive control strategies and exchange a reduced set of information by a local network. The experimental results are satisfactory and comparable with those obtained by the classical centralized model predictive control strategy.

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Fault‐tolerant control of process systems using communication networks

Cited by 61 publications

References 44 publications

Integrated fault‐detection and fault‐tolerant control of process systems

Integrated fault‐detection and fault‐tolerant control of process systems

Fault‐tolerant control of nonlinear processes: performance‐based reconfiguration and robustness

Application of a Networked Decentralized MPC to Syngas Process in Oil Industry

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