Introduction to DiaSter – Intelligent System for Diagnostics and Automatic Control Support

Syfert, Michał; Wnuk, Paweł; Kościelny, Jan Maciej

doi:10.1007/978-3-642-23244-2_47

Cited by 5 publications

(16 citation statements)

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Section: Discussionmentioning

confidence: 99%

“…There are known algorithms of model identification, with the use of genetic optimization, in which the selection of TSK model structure and parameters is fully automatically implemented [38].…”

Section: Fault Detection and Fault Isolationmentioning

confidence: 99%

“…This mathematical apparatus can be used for reliability analysis [10] or modeling for the purpose of analytical redundancy [10,38].…”

Section: Fault Detection and Fault Isolationmentioning

confidence: 99%

“…Finally, the model weights are calculated according to the selected neural network learning algorithm. The designed model should provide sufficient modeling accuracy for diagnostic purposes.There are known algorithms of model identification, with the use of genetic optimization, in which the selection of TSK model structure and parameters is fully automatically implemented [38].NFS model created in accordance with the formula (1), is shown in Fig. 5.…”

mentioning

confidence: 99%

“…Information about faults transmitted from the diagnostic system to the controller initiates the necessary reconfiguration of control systems. AMandD system is still being developed under the name DiaSter, in cooperation with Rzeszow University of Technology, Silesian University of Technology and University of Zielona Gora [17,38].Such solution with a separate diagnostic system can cause too large delays in support of protective actions. A better solution is to implement necessary diagnostic software in PLC controllers.…”

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confidence: 99%

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Method of increasing the reliability and safety of the processes through the use of fault tolerant control system

Pawlak

Kościelny

Wasiewicz

2015

EiN

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Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl PAwlAk M, kościelny JM, wAsiewicz P. Method of increasing the reliability and safety of the processes through the use of fault tolerant control systems. eksploatacja i niezawodnosc - Maintenance and Reliability 2015; 17 (3): 398-407, http://dx.doi.org/10.17531/ein.2015.3.10. Mariusz PAwlAk Jan Maciej kościelny Piotr wAsiewiczMethod of increasing the reliability and safety of the processes through the use of fault tolerant control systeMs Metoda podwyższania niezawodności i bezpieczeństwa procesów poprzez stosowanie układów regulacji tolerujących uszkodzenia* Przedstawiono ideę działania układów automatyki tolerujących uszkodzenia. Omówiono warstwy zabezpieczeniowo ochronne stosowane w diagnostyce technicznej, związanej z bezpieczeństwem układów regulacji. Jako przykład układu regulacji tolerującego uszkodzenia torów pomiarowych, opisano układ regulacji mocy turbiny parowej. Turbiny takie stanowią podstawowy element bloków energetycznych, tworzących krajowy system energetyczny. Dlatego też, od układów regulacji turbin wymaga się dużej niezawodności. W pracy określono wpływ diagnostyki i tolerowania uszkodzeń na wartości wskaźników niezawodności i bezpieczeństwa układów automatyki.Słowa kluczowe : bezpieczeństwo, diagnostyka, układ regulacji, tolerowanie uszkodzeń, redundancja, rekonfiguracja, turbina parowa, blok energetyczny, wskaźniki niezawodności. IntroductionThe control system faults are one of the main causes of breakdowns in industrial processes. According to presented by ABB data, 36% of all problems are caused by failures of control system components, including faults of sensors and actuators primarily. These devices are installed on the process installation, which creates for them difficult and variable operating conditions. Control units, installed in the control rooms, are damaged relatively rare. If we consider damages caused by control systems exclusively, then not more than 10% of them are caused by faults of control units. The others are the consequences of faults of sensors and actuators. In contrast, paradoxically different redundant solutions are developed and are commercially available primarily for any kind of controllers and computer networks.Examples of serious industrial accidents caused by damage to the measuring equipment are:Damage in the fuel storage Buncefield, on 11 December 2005. • A fault of the level sensor caused overflow of the fuel tank and ignition. Next, a series of explosions and fire of aviation fuel occurred. It was the largest fire in Europe. There were 40 injuries and substantial material damage (£ 5bn) [1]. Damage in Texas City, USA, on 23 March 2005, in the largest • oil refinery BP International. During a start-up procedure of the separator plant at the Isomerization Department, producing high octane unleaded gasoline additives, level sensors have failed. It caused the level overflow in the distillation column, resultin...

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Section: Discussionmentioning

confidence: 99%

Section: Fault Detection and Fault Isolationmentioning

confidence: 99%

“…This mathematical apparatus can be used for reliability analysis [10] or modeling for the purpose of analytical redundancy [10,38].…”

Section: Fault Detection and Fault Isolationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Method of increasing the reliability and safety of the processes through the use of fault tolerant control system

Pawlak

Kościelny

Wasiewicz

2015

EiN

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Automatic control system for ventricular assist device

Fajdek

Janiszowski

2014

2014 19th International Conference on Methods and Models in Automation and Robotics (MMAR)

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This paper presents a research and some results of experiments at development of an automatic control system for the heart assist device. The aim of the study was to develop and design a new control system for the pneumatic control unit in a heart assisting device. The new algorithm is based on diagnostic tests which are used to detect full ejection and complete filling states of the artificial chamber. To facilitate a more in-depth understanding of the implemented algorithm and its features, a brief description of the IT solutions which have been applied is given.

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Active Fault Tolerant Control System for the Measurement Circuit in a Drum Boiler Feed-Water Control System

Pawlak

2018

Measurement and Control

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This paper presents a water-level control system in a drum boiler. The system was equipped with a fault tolerant control-type diagnostic system. The paper presents the results of tests conducted on the fault tolerant control system implemented in the water-level control system in a boiler drum. The diagnostics of the measurement circuits was carried out online. To that end, the appropriate partial models were developed and tested. This allowed for the application of analytical redundancy for the measurement circuits. The paper also identifies the influence of diagnostics and fault tolerance on the values of reliability indices and operating safety of a power unit. Fault tolerant control systems increase the safety of a power unit operation, and the studies described in the paper directly contribute to them. These kinds of systems have not been used so far in power unit automation. Site tests confirmed the validity of the acquired concept for the diagnostic system. Fault tolerant control systems have not been commonly applied in power engineering yet. Studies of the water-level control system in a steam drum using the fault tolerant control system for the measurement circuits as presented in the paper are original ideas, providing a new solution. All control systems made for the study fulfil their role in a satisfactory way, which results in a minor deviation in the water-level adjustment in the boiler drum. The tests confirmed the efficiency of the fault detection algorithm. The created models of the water level and flows proved to be successful. Under a no-fault condition of the facility, there were no errors in the diagnoses and the values of all residua were below the detection thresholds. This was achieved despite a high value of measurement noises. The residua helped detect minor faults.

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Introduction to DiaSter – Intelligent System for Diagnostics and Automatic Control Support

Cited by 5 publications

References 3 publications

Method of increasing the reliability and safety of the processes through the use of fault tolerant control system

Method of increasing the reliability and safety of the processes through the use of fault tolerant control system

Automatic control system for ventricular assist device

Active Fault Tolerant Control System for the Measurement Circuit in a Drum Boiler Feed-Water Control System

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