A self-validating control system based approach to plant fault detection and diagnosis
Jun Chen,John Howell +1 more
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TLDR
In this paper, an approach is proposed in which fault detection and diagnosis (FDD) tasks are distributed to separate FDD modules associated with each control system located throughout a plant.About:
This article is published in Computers & Chemical Engineering.The article was published on 2001-03-15 and is currently open access. It has received 31 citations till now. The article focuses on the topics: Control reconfiguration & Fault detection and isolation.read more
Citations
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Application of signed digraphs-based analysis for fault diagnosis of chemical process flowsheets
TL;DR: Two case studies are presented to illustrate SDG-based analysis of process flowsheets containing many units and control loops and it is shown that digraph-based steady-state analysis results in good diagnostic resolution.
Journal ArticleDOI
A Systematic Framework for the Development and Analysis of Signed Digraphs for Chemical Processes. 1. Algorithms and Analysis
TL;DR: In this paper, the authors focus on the systematic development of graph models and the conceptual relationship between the analysis of graph model and the underlying mathematical description and the analysis procedures for the graph model.
Journal ArticleDOI
A Signed Directed Graph and Qualitative Trend Analysis-Based Framework for Incipient Fault Diagnosis
TL;DR: A combined signed directed graph (SDG) and qualitative trend analysis (QTA) framework for incipient fault diagnosis that combines the completeness property of SDG with the high diagnostic resolution property of QTA.
Journal ArticleDOI
A signed directed graph-based systematic framework for steady-state malfunction diagnosis inside control loops
TL;DR: In this paper, a unified SDG model for control loops is discussed, in which both disturbances (sensor bias, etc.) as well as structural faults can be easily modeled under steady-state conditions.
Journal ArticleDOI
A systematic framework for the development and analysis of signed digraphs for chemical processes. 2. Control loops and flowsheet analysis
TL;DR: In this paper, the authors present a signed digraph (SDG) model for control loops and discuss a framework for application of graph-based approaches at a flowsheet level.
References
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Journal ArticleDOI
The numerical solution of bilinear data reconciliation problems using unconstrained optimization methods
Oliver Schraa,C. M. Crowe +1 more
TL;DR: A new approach to solving steady-state data reconciliation problems with bilinear constraints is proposed, in which the objective function and its constraints are put into unconstrained form using Lagrange multipliers.
Proceedings ArticleDOI
A hierarchical fault diagnosis method using a decision support system applied to a chemical plant
TL;DR: A hierarchical scheme of fault detection and isolation based on decision support system (DSS) is presented and this approach is applied to sensor fault detection in a chemical plant, and compared with different methods.
Feasibility study of a fault-diagnosis system for chemical plants.
Yoshifumi Tsuge,Junichi Shiozaki,Hisayoshi Matsuyama,Eiji O'Shima,Yuji Iguchi,Masakatsu Fuchigami,Motohiko Matsushita +6 more
Journal ArticleDOI
Fault diagnosis of a batch process by use of pattern-recognition technique.
TL;DR: A method to diagnose the fault in a batch process is proposed by the use of pattern-recognition technique, which consists of detection of the abnormality occurring in a process, identification of the origin of failure and improvement of the accuracy of diagnosis.