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Wyświetlanie 1-6 z 6
Tytuł:
A fault detection method based on stacking the SAE-SRBM for nonstationary and stationary hybrid processes
Autorzy:
Huang, Lei
Ren, Hao
Chai, Yi
Qu, Jianfeng
Powiązania:
https://bibliotekanauki.pl/articles/1838184.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fault detection
sparse autoencoder
sparse restricted Boltzmann machine
hybrid industrial processes
detekcja błędu
autoenkoder
proces przemysłowy
Opis:
This paper proposes a fault detection method by extracting nonlinear features for nonstationary and stationary hybrid industrial processes. The method is mainly built on the basis of a sparse auto-encoder and a sparse restricted Boltzmann machine (SAE-SRBM), so as to take advantages of their adaptive extraction and fusion on strong nonlinear symptoms. In the present work, SAEs are employed to reconstruct inputs and accomplish feature extraction by unsupervised mode, and their outputs present a knotty problem of an unknown probability distribution. In order to solve it, SRBMs are naturally used to fuse these unknown probability distribution features by transforming them into energy characteristics. The contribution of this method is the capability of further mining and learning of nonlinear features without considering the nonstationary problem. Also, this paper introduces a method of constructing labeled and unlabeled training samples while maintaining time series features. Unlabeled samples can be adopted to train the part for feature extraction and fusion, while labeled samples can be used to train the classification part. Finally, a simulation on the Tennessee Eastman process is carried out to demonstrate the effectiveness and excellent performance on fault detection for nonstationary and stationary hybrid industrial processes.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 1; 29-43
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fault detection method based on stacking the SAE-SRBM for nonstationary and stationary hybrid processes
Autorzy:
Huang, Lei
Ren, Hao
Chai, Yi
Qu, Jianfeng
Powiązania:
https://bibliotekanauki.pl/articles/1838177.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fault detection
sparse autoencoder
sparse restricted Boltzmann machine
hybrid industrial processes
detekcja błędów
autoenkoder
proces przemysłowy
Opis:
This paper proposes a fault detection method by extracting nonlinear features for nonstationary and stationary hybrid industrial processes. The method is mainly built on the basis of a sparse auto-encoder and a sparse restricted Boltzmann machine (SAE-SRBM), so as to take advantages of their adaptive extraction and fusion on strong nonlinear symptoms. In the present work, SAEs are employed to reconstruct inputs and accomplish feature extraction by unsupervised mode, and their outputs present a knotty problem of an unknown probability distribution. In order to solve it, SRBMs are naturally used to fuse these unknown probability distribution features by transforming them into energy characteristics. The contribution of this method is the capability of further mining and learning of nonlinear features without considering the nonstationary problem. Also, this paper introduces a method of constructing labeled and unlabeled training samples while maintaining time series features. Unlabeled samples can be adopted to train the part for feature extraction and fusion, while labeled samples can be used to train the classification part. Finally, a simulation on the Tennessee Eastman process is carried out to demonstrate the effectiveness and excellent performance on fault detection for nonstationary and stationary hybrid industrial processes.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 1; 29-43
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated software environment dedicated for implementation of control systems based on PLC controllers
Zintegrowane środowisko programowania przeznaczone do realizacji systemów sterowania opartych na sterownikach PLC
Autorzy:
Surma, S.
Powiązania:
https://bibliotekanauki.pl/articles/375101.pdf
Data publikacji:
2007
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
sterownik PLC
proces przemysłowy
system sterowania
zintegrowane oprogramowanie
PLC controller
industrial process
control system
integrated software
Opis:
Industrial processes' control systems based on PLC controllers play today a very important role in all fields of transport, including also sea transport. Construction of control systems is the field of engineering, which has been continuously evolving towards maximum simplification of system design path. Up to now the time needed for the system construction from the design to commissioning had to be divided into a few stages. A mistake made in an earlier stage caused that in most cases the next stages had to be restarted. Available debugging systems allows defect detection at an early stage of the project implementation. The paper presents general characteristic of integrated software for implementation of complex control systems. The issues related to the software use for programming of the visualisation environment, control computer, selection of transmission medium and transmission protocol as well as PLC controllers' configuration, software and control have been analysed.
Systemy sterowania procesami przemysłowymi oparte na sterownikach PLC odgrywają w dniu dzisiejszym bardzo dużą rolę, we wszystkich dziedzinach transportu. Budowa systemów sterowania jest dziedziną inżynierii, która ciągle ewoluuje w kierunku maksymalnego uproszczenia ścieżki konstruowania systemu. Czas potrzebny na budowę systemu, od projektu po oddanie do eksploatacji (do dnia dzisiejszego) musiał być podzielony na kilka etapów. Błąd popełniony na wcześniejszym etapie powodował, że kolejne etapy trzeba było w większości przypadków powtarzać. Dostępne systemy debugowania pozwalają na wykrycie usterki we wczesnym stadium realizacji projektu. W artykule przedstawiono ogólną charakterystykę zintegrowanego oprogramowania, do realizacji złożonych systemów sterowania. Przeanalizowano zagadnienia dotyczące wykorzystania oprogramowania do programowania środowiska wizualizacji, komputera sterującego, wyboru medium transmisyjnego oraz protokołu transmisji oraz konfiguracji, oprogramowania i sterowania sterownikami PLC.
Źródło:
Transport Problems; 2007, 2, 2; 63-68
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of in series and in parallel flow heater configuration of solar heat system for industrial processes
Autorzy:
Ghabour, Rajab
Korzenszky, Péter
Powiązania:
https://bibliotekanauki.pl/articles/36090333.pdf
Data publikacji:
2021-12-29
Wydawca:
Akademia Tarnowska
Tematy:
solar thermal
industrial processes
in series
in parallel
process heat
energia słoneczna
proces przemysłowy
równoległość
szereg
ciepło technologiczne
Opis:
The boiler is an enclosed vessel that transfers the energy from fuel combustion or electricity into hot water or steam. Then, this hot water or pressurized steam is used for transferring the heat to a certain heat process. Usually, the required hot water or steam keeps on varying throughout the day which also may be implied on the daily or monthly load. Therefore, several configurations of connecting the boiler into the solar heating system ensure the temperature of the final output. The boiler can be connected in series or parallel to improve the efficiency of the overall process as well as to reduce the running costs. This paper presents a simulation study of a solar heating system for industrial processes. Two flow-heater system configurations are designed for covering the heat demand of a pasteurising factory existing in Budapest, Hungary. The configuration “A” consists of a solar heating system for hot water preparation using in series flow heater configuration. While configuration “B” consists of the same solar system but with a parallel flow heater configuration. These system configurations are modelled using T*sol software for evaluating the system performance under the Hungarian climate from five different aspects: required collector area, glycol ratio, volume flow rate, relative tank capacity, and tank height-to-diameter ratio. According to the optimum design parameters, in series configuration is better than parallel by 3.14% at 45 m² collector area, 0.45% at 25% glycol ratio, 0.42% at 50 l/h · m² volume flow rate, 2.05% at 50 l/m² relative tank capacity, and 0.42% at 1.8 tank height-to-diameter ratio respectively. The results show that in series configuration is better in terms of solar fractions than parallel configuration from all five aspects.
Źródło:
Science, Technology and Innovation; 2021, 14, 3-4; 18--26
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal tuning procedure for FOPID controller of integrated industrial processes with deadtime
Autorzy:
Anuja, R.
Sivarani, T.S.
Germin Nisha, M.
Powiązania:
https://bibliotekanauki.pl/articles/2173529.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
industrial process integrated with dead time
tuning of FOPID
whale optimization algorithm
proces przemysłowy zintegrowany z czasem martwym
strojenie FOPID
algorytm optymalizacji wielorybów
Opis:
Industrial processes such as batch distillation columns, supply chain, level control etc. integrate dead times in the wake of the transportation times associated with energy, mass and information. The dead time, the cause for the rise in loop variability, also results from the process time and accumulation of time lags. These delays make the system control poor in its asymptotic stability, i.e. its lack of self-regulating savvy. The haste of the controller’s reaction to disturbances and congruence with the design specifications are largely influenced by the dead time; hence it exhorts a heed. This article is aimed at answering the following question: “How can a fractional order proportional integral derivative controller (FOPIDC) be tuned to become a perfect dead time compensator apposite to the dead time integrated industrial process?” The traditional feedback controllers and their tuning methods do not offer adequate resiliency for the controller to combat out the dead time. The whale optimization algorithm (WOA), which is a nascent (2016 developed) swarm-based meta-heuristic algorithm impersonating the hunting maneuver of a humpback whale, is employed in this paper for tuning the FOPIDC. A comprehensive study is performed and the design is corroborated in the MATLAB/Simulink platform using the FOMCON toolbox. The triumph of the WOA tuning is demonstrated through the critical result comparison of WOA tuning with Bat and particle swarm optimization (PSO) algorithm-based tuning methods. Bode plot based stability analysis and the time domain specification based transient analysis are the main study methodologies used.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 1; e139954, 1--8
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Workplace quality during the welding process
Jakość pracy podczas procesu spawania
Autorzy:
Wandzich, D.
Płaza, G.
Powiązania:
https://bibliotekanauki.pl/articles/112596.pdf
Data publikacji:
2015
Wydawca:
STE GROUP
Tematy:
occupational exposure
welding process
industrial dust
noise
health risk
narażenie zawodowe
pył przemysłowy
hałas
proces spawania
ryzyko zdrowotne
Opis:
The article presents the exposure to noise and dusts occurring during the welding process. The results of the measurements of industrial dust and noise at the welder’s workplace in the period 2012-2014 are presented. Health problems generated during the process are presented. In particular, the attention is paid how to improve the quality of the work during the welding process. Proactively proposing actions that will improve the quality of the work during the welding process are described.
W artykule omówiono narażenia związane z hałasem i pyłem przemysłowym występujące podczas procesu spawania, a wpływające w istotny sposób na jakość pracy i zdrowie spawacza. W części doświadczalnej przedstawiono wyniki pomiarów pyłu przemysłowego oraz hałasu na stanowisku pracy spawacza w latach 2012-2014. Zaproponowano działania prewencyjnie, które poprawią jakość pracy podczas procesu spawania i ograniczą zagrożenia zdrowotne.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2015, 1 (10); 117-127
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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