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Tytuł:
Sprzętowa implementacja rozmytego systemu ekspertowego
Hardware implementation of a fuzzy expert system
Autorzy:
Dec, G.
Hajduk, Z.
Powiązania:
https://bibliotekanauki.pl/articles/156304.pdf
Data publikacji:
2005
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
systemy ekspertowe
sterowanie rozmyte
rozmyte sieci Petriego
FPGA
expert system
fuzzy control
fuzzy Petri nets
Opis:
W pracy zaproponowano metodę syntezy układu sterującego, specyfikowanego za pomocą rozmytego systemu ekspertowego, zawierającego reguły działania. Przedstawiono sposób modelowania i badania właściwości SE przy użyciu rozmytej sieci Petriego. Pokazano praktyczny przykład zastosowania metody do syntezy sterownika, wykonanego w układzie FPGA.
This paper presents a synthesis method of a control system, that is modeled by a production-rule-based expert system. As a tool for analysis properties of the expert system a fuzzy Petri net is proposed. We show practical application of the described method to develop a parallel controller, that is implemented in a FPGA.
Źródło:
Pomiary Automatyka Kontrola; 2005, R. 51, nr 1, 1; 34-36
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensitivity analysis of a fuzzy expert system for modelling dependencies in human operators’ emergency tasks
Autorzy:
Zio, E.
Baraldi, P.
Librizzi, M.
Podofillini, L.
Dang, H. V.
Powiązania:
https://bibliotekanauki.pl/articles/2069589.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
human reliability analysis
fuzzy expert system
sensitivity analysis
Opis:
This paper analyzes the behaviour of a fuzzy expert system for evaluating the dependence among successive operator actions, through a sensitivity analysis on the fuzzy input partitioning and assessment. Preliminary results are presented with respect to a case study concerning two successive tasks of an emergency procedure in a nuclear reactor. Work is in progress to perform a thorough sensitivity analysis to generalize the results obtained.
Źródło:
Journal of Polish Safety and Reliability Association; 2007, 2; 379--389
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy expert system for adaptive vessel traffic control on one-way section on navigable canal
Autorzy:
Bugarski, Vladimir
Bačkalić, Todor
Kanović, Željko
Kulić, Filip
Zeković, Miloš
Powiązania:
https://bibliotekanauki.pl/articles/374259.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
vessel traffic
one-way section
fuzzy expert system
adaptive control
ruch statków
odcinek jednokierunkowy
regułowe systemy ekspertowe
regulacja adaptacyjna
Opis:
This paper analyses the management process of the vessel traffic control on one-way section on navigable canal with the adaptive time-sequential filter (traffic lights). One-way section on canal significantly decreases waterway capacity and requests special attention in control and regulation of the vessel traffic. The vessel traffic is a stochastic variable, and the vessel traffic control needs to be flexible and adaptive in order to achieve the required traffic flow with minimal delays. On the one-way section, two independent variable vessel flows from opposite directions are encountered, and fixed (predefined) signal plans lead to an increase in vessel delays. An appropriate solution is development of a Fuzzy Control System (FCS) for the vessel traffic control. A control algorithm is designed according to a set of linguistic rules that describes input parameters for the control strategy. The estimated and approximate input parameters are implemented in the algorithm as fuzzy sets. The final result of the developed algorithm is the traffic light scheme (duration of green light for certain direction). The presented control system can be used as an adaptive automatic control system for the vessel traffic control processes on navigable canals or on critical sections of other waterways.
Źródło:
Transport Problems; 2019, 14, 4; 39-50
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmodyfikowany rozmyty system ekspertowy wspomagający wnioskowanie o jakości betonu
Modified fuzzy expert system supporting inference on concrete quality
Autorzy:
Skrzypczak, I.
Powiązania:
https://bibliotekanauki.pl/articles/391261.pdf
Data publikacji:
2013
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
beton
jakość
wnioskowanie
zbiory rozmyte
concrete
quality
fuzzy sets
Opis:
Jakość jest nieodłącznym parametrem procesu produkcji betonu towarowego. Zapewnienie dobrej jakości betonu wymaga podjęcia odpowiednich działań w wytwórni. Kontrola produkcji wg [1,3] obejmuje działania konieczne do uzyskania i zachowania właściwości betonu zgodnie z określonymi wymaganiami, w szczególności: • doboru materiałów; • projektowania betonu; • produkcji betonu; • weryfikacji i badań (składników mieszanki betonowej i betonu oraz sprzętu); • kontroli sprzętu stosowanego do transportu mieszanki betonowej; • kontroli zgodności. Ważnym, zagadnieniem jest przyjęcie odpowiedniej procedury pozwalającej sprowadzić oceny cząstkowe kontroli produkcji betonu do jednej syntetycznej oceny jakości betonu towarowego. Celem niniejszego artykułu jest zaprezentowanie podejścia w analizie i ocenie jakości przy produkcji betonu towarowego opartego na teorii zbiorów rozmytych. Zagadnienia podjęte w artykule są pogłębieniem tematyki poruszanej w artykule prezentowanym na 58 Konferencji Krynickiej [2]. Rozmyty system ekspertowy wspomagający wnioskowanie o jakości betonu uzupełniono o zmodyfikowaną rozmytą funkcję wyjścia oraz zaproponowano matematyczną formułę umożliwiającą określenie jakości jako wartości zdeterminowanej.
Quality is an inherent parameter of the production of ready-mixed concrete. Providing good quality concrete needs taking appropriate action in the concrete mixing plant. Production control includes the activities necessary to achieve and maintain the properties of concrete in accordance with specified requirements, in particular: • Composition of materials, • Specification of concrete, • Production of concrete, • Verification and testing (fresh and hardened concrete), • Control equipment for the transport of concrete, • Confromity control. An important question is the adoption of an appropriate procedure to bring the evaluation of partial control of the concrete production to the one synthetic evaluation of concrete quality. The purpose of this article is to present an approach to the analysis and evaluation of the quality in the production of ready-mixed concrete based on the theory of fuzzy sets. The issnes raised in this article are supposed to develop the themes addressed in the paper presented at the 58 Conference of Krynicka [2]. Fuzzy expert system supporting the inference on the quality of the concrete was supplemented with a modified fuzzy output function and proposition of a mathematical formula for specyfying the quality as a determined value.
Źródło:
Budownictwo i Architektura; 2013, 12, 3; 201-207
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of a fuzzy expert system to increase the reliability of diagnostics of axle boxes of rolling stocks
Autorzy:
Manafov, Elshan
Powiązania:
https://bibliotekanauki.pl/articles/2091128.pdf
Data publikacji:
2020
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
rolling stock
axle boxes
control
fault
fuzzy set
technical condition
temperature
vibration
noise
tabor
maźnice
kontrola
wina
układ rozmyty
stan techniczny
temperatura
wibracja
hałas
Opis:
This paper is devoted to the development of an effective system for monitoring the technical condition of the axle boxes of rolling stock. To this end, the possibility of solving problems of fault diagnostics based on the theory of fuzzy sets is considered. This allows one note such difficult-to-formalise factors as experience and intuition of a highly qualified expert specialist. It showed that an expert system-based monitoring approach allows evaluation of the technical condition of the axle boxes, characterised by internal and external operating uncertainty. It also proposed the use of parameters such as vibration and noise for comprehensive monitoring of the technical condition of axle box units together with temperature. Furthermore, the combination of these diagnostic parameters and expert system’s possibility to receive all necessary information about the condition of the most critical components of the axle boxes in real-time and analyse the changes in their operational parameters was explored. The stages of modelling an expert system in the Fuzzy Logic Toolbox package of the MATLAB computing environment are presented.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2020, 107; 95--106
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of fuzzy expert system for an automatic control of the propulsion system in the aircraft ZLIN 143LSi
Autorzy:
Krok, B.
Grzesik, N.
Kuźma, K.
Powiązania:
https://bibliotekanauki.pl/articles/242523.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fuzzy logic
fuzzy expert system
propulsion system
aircraft Zlin 143LSi
Opis:
The article discusses the manner of controlling the propulsion system in the aircraft Zlin 143LSi, which is equipped with a piston engine driving a variable-pitch propeller. All the operating procedures are carried out manually by the pilot in accordance with the flight manual. The authors attempted at developing the project of a controller based on fuzzy logic, whose main goal was automating the control system of the propulsion unit, thus lowering the level of difficulty of pilotage, and increasing the economics of the operation. The project was made in an interactive environment FuzzyLogic Toolbox of the MATLAB programme. In the analysis, three input parameters were taken into account, exerting an impact on changing the rotational speed of the propeller: the charging pressure of the propulsion unit expressed in inches of mercury, the speed of the aircraft (TAS) in knots and the angle of attack, at which the flight is made, expressed in degrees. On the basis of the above-mentioned input signals, the rotation speed of the propeller was determined, by changing the blade pitch and the recommended angle of attack for the parameters in order to make an optimal use of the data of the flight conditions. The article presents the project of the controller and its optimization. The authors simulated the controller operation in the package MATLAB “Simulink”. The article ends with data analysis and final conclusions.
Źródło:
Journal of KONES; 2018, 25, 3; 307-314
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aircraft docking guidance system to the gate using fuzzy logic
Autorzy:
Żurawski, P.
Grzesik, N.
Kuźma, K.
Powiązania:
https://bibliotekanauki.pl/articles/243957.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fuzzy logic
fuzzy expert system
aircraft taxiing
aircraft steering
Opis:
The article presents the concept of automated final process of aircraft taxiing to the gate at the terminal. On the basis of an analysis of the possibilities of aircraft taxiing in civil airports, the authors attempted at optimizing this process. The main objective of the project is to reduce the taxiing time, consequently reducing fuel consumption as well as the rotation time. As a result of the work, the authors designed a controller based on fuzzy logic, which, depending on the initial parameters, calculates the set values for the execution system of aircraft control in the horizontal plane and for the taxi speed. The controller receives two input signals, which determine two output signals. The designed controller allows comprehensive and fully automated aircraft steering. The project relies on data with regard to the apron class D, suited to handle aircraft with a wingspan of up to 52 m and the characteristics of a Boeing 767-200 in speed taxiing and the maximum turn of the nose gear. The measurements of the apron have been adopted in accordance with international regulations in the ICAO DOC 9157 “Aerodrome Design Manual”. The maximum deviation of the nose gear from the centre line was assumed 2.5 m in each direction and a safe distance behind the immobile aircraft equal to 25 m. The length of the Boeing aircraft 767-200 is below 48 m, therefore the input boundary parameters are equal to +/- 2.5 m from the centre line and 80 m from the designated aircraft stand (nose gear). The article presents the project of the controller and its optimization. The authors simulated the controller operation in the package MATLAB “Simulink”. The article ends with data analysis and final conclusions.
Źródło:
Journal of KONES; 2018, 25, 3; 549-556
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
With using fuzzy logic in the MANET
Autorzy:
Jelodar, H
Aramideh, J
Powiązania:
https://bibliotekanauki.pl/articles/102997.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
AODV routing protocol
DSDV routing protocol
fuzzy expert system
MANET
Opis:
Mobile ad hoc networks have consisted of the nodes which are freely displaced. In other words, this network has dynamic topology. Routing protocols find route of forwarding data packets from the source node to the destination node. A routing protocol plays important role in finding the shortest time and the route path. In this paper, considering significance of the subject, attempt has been made to present a model using fuzzy logic approach to evaluate and compare two routing protocols i.e. AODV DSDV using effective factor of the number of nodes based on 2 outputs of delay and throughput rate (totally fuzzy system with four outputs) in order to select one of these two routing protocols properly under different conditions and based on need and goal. To show efficiency and truth of fuzzy system, two protocols have been evaluated completely equally using NS-2 simulator and attempt has been made to prove efficiency of the designed fuzzy system by comparing results of simulation of fuzzy system and NS-2 software.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 22; 19-25
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy logic expert system for supply chain resilience modelling and simulation
Autorzy:
Bukowski, L. A.
Feliks, J
Powiązania:
https://bibliotekanauki.pl/articles/2069242.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
resilience
supply chain
uncertainty
fuzzy logic
modelling
simulation
Opis:
The aim of this paper is to present the concept of the supply chain resilience assessment in the case of disruptive events occurrence. Firstly, the methods for modelling uncertainty in terms of their application to assess this type of risk will be discussed, and then the concept of a fuzzy logic expert model enabling a quantitative assessment of supply chain resilience will be presented. Finally the structure of the simulation model has been proposed, which consists of the partial resilience models, namely: security, survivability and recovery ones. In the course of the simulation process, it is possible to identify the rules involved in system output as well as changes in resilience level which account for changes in inputs values.
Źródło:
Journal of Polish Safety and Reliability Association; 2015, 6, 3; 31--38
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault diagnosis and identification in the distribution network using the fuzzy expert system
Identyfikacja i diagnoza błędów w elektroenergetycznej sieci rozdzielczej z wykorzystaniem rozmytego systemu eksperckiego
Autorzy:
Kaluđer, S.
Fekete, K.
Jozsa, L.
Klaić, Z.
Powiązania:
https://bibliotekanauki.pl/articles/301153.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
fault diagnosis
alarm processing
fuzzy logic
expert system
distribution network
diagnoza błędów
przetwarzanie alarmów
logika rozmyta
system ekspercki
sieć rozdzielcza
Opis:
In this paper, a fuzzy expert off-line system has been developed for fault diagnosis in the distribution network based on the structural and functional operation of the relay and circuit breakers. Functional operations (correct operation, false operation and failure to operate) of the relays and circuit breakers are described by fuzzy logic. Input data for the proposed fuzzy expert fault diagnosis system (FDS) are status and time stamps of the alarms, associated with relays and circuit breakers. The diagnostic system from a huge number of alarms sets, logically organizes and quantifies the diagnosis. FDS can diagnose correct operation, false operation and failure to operate of the relays and circuit breakers. Also, it can identify and quantify fault location based on the Hamacher’s operator of a fuzzy union. The additional contribution of this paper is in modeling unknown information using linear fuzzy membership function. Statuses of certain components may be unknown due to telemetry failures or are simply unavailable to the operator and proposed FDS can make diagnosis in such a situation. Developed fuzzy expert FDS is tested on the two examples of faults in real life distribution network.
W prezentowanym artykule opracowano rozmyty system ekspercki typu off-line do diagnozowania błędów w elektroenergetycznej sieci rozdzielczej. System bazuje na strukturze i działaniu przekaźnika i wyłączników automatycznych. Działanie (prawidłowe działanie, błędne działanie i brak działania) przekaźników i wyłączników opisano za pomocą logiki rozmytej. Dane wejściowe do proponowanego rozmytego eksperckiego systemu diagnostyki błędów (FDS) stanowią stany i sygnatury czasowe alarmów, związane z przekaźnikami i wyłącznikami. System diagnostyczny logicznie porządkuje i określa ilościowo diagnozę na podstawie ogromnej liczby zestawów alarmów. FDS pozwala zdiagnozować prawidłowe działanie, błędne działanie oraz awarię (brak działania) przekaźników i wyłączników. Ponadto umożliwia identyfikację i lokalizację błędów w oparciu o sumę Hamachera. W artykule dodatkowo omówiono metodę modelowania informacji nieznanych przy użyciu liniowej funkcji przynależności dla zbiorów rozmytych. Stany niektórych elementów mogą być nieznane z powodu awarii telemetrii lub mogą być po prostu niedostępne dla operatora. Proponowany FDS umożliwia postawienie diagnozy w takich sytuacjach. Opracowany rozmyty ekspercki FDS testowano na dwóch przykładach błędów powstałych w funkcjonującej sieci rozdzielczej.
Źródło:
Eksploatacja i Niezawodność; 2018, 20, 4; 621-629
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using fuzzy logic expert system for the estimation of the probability of armour penetration by PGU-14 shells fired from the GAU-8/A CA
Autorzy:
Opala, P.
Grzesik, N.
Kuźma, K.
Powiązania:
https://bibliotekanauki.pl/articles/245144.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fuzzy logic
fuzzy expert system
armour penetration
GAU-8/A cannon
PGU 14 API shells
Opis:
The article discusses the possibility of armour penetration by PGU 14 API shells fired from the GAU-8/A cannon. The considerations focus on questions with regard to the probability of armour penetration with the initially established conditions in the project. In the analysis, the authors took into account three parameters: armour thickness, armour slope and target distance. Based on the initial parameters, the authors estimated the probability of armour penetration. The designed a fuzzy expert system in the MATLAB software as well as conducting simulation of its performance in the Simulink programmes. The authors presented the performance of the system based on twenty samples for research, which simulate different thickness of the target armour, different distance from the target and different slope of the armour. The authors presented control surfaces, due to which it is possible to analyse the system performance. They also show the simulation process in the Simulink software package with the preset values. On the basis of the created controller, it is clear that a well-developed system, which had undergone testing and optimization, is capable of calculating near reality probability values. The designed system might improve fire effectiveness of ground targets during air training and combat tasks, as well as optimizing the consumption of air-to-ground armour piercing (AP) shells.
Źródło:
Journal of KONES; 2017, 24, 4; 211-218
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Different defuzzification methods in Guimbal Cabri G2 helicopter takeoff possibility evaluation
Autorzy:
Mendrek, M.
Grzesik, N.
Krzyżak, A.
Kuźma, K.
Powiązania:
https://bibliotekanauki.pl/articles/374121.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
fuzzy logic
fuzzy expert system
helicopter take off
logika rozmyta
regułowe systemy ekspertowe
start helikoptera
Opis:
The article discusses the aerodynamic properties of the Guimbal Cabri G2 helicopter. The main considerations concern the helicopters ascending to the altitude under initial conditions, which were assumed in the project and how the change of the defuzzification method affects the work of the fuzzy controller. The authors analyzed the following: the aircraft, the crew and the payload. The authors assessed the altitude and the minimum time of the helicopter climb. In designing and the work simulation process, the authors used Matlab and Simulink software. A comparison of the influence of selected defuzzification methods on the work of the fuzzy controller was made.
Źródło:
Transport Problems; 2018, 13, 2; 27-38
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena możliwości wzniesienia się w powietrze śmigłowca Guimbal Cabri G2 z wykorzystaniem rozmytego systemu eksperckiego
Guimbal Cabri G2 helicopter take off possibility evaluation with use of fuzzy expert system
Autorzy:
Mendrek, M.
Grzesik, N.
Krzyżak, A.
Powiązania:
https://bibliotekanauki.pl/articles/315655.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
śmigłowiec Guimbal Cabri G2
rozmyty system ekspercki
MATLAB/Simulink
Guimbal Cabri G2 helicopter
fuzzy expert system
Matlab/Simulink
Opis:
W artykule omówione zostały możliwości aerodynamiczne śmigłowca Guimbal Cabri G2. Rozważania oscylują wokół pytania na jaką wysokość maszyna będzie w stanie się wznieść biorąc pod uwagę warunki początkowe założone w projekcie. Analizowano masę śmigłowca, masę członków załogi oraz masę bagażu zabieranego przez załogę. Oceniano wysokość i minimalny czas w jakim śmigłowiec będzie się wznosił. Zaprojektowany układ mógłby zostać wykorzystany w praktyce podczas lotów szkoleniowych, rekreacyjnych, wykonywania różnorakich zadań lotniczych oraz znacząco ułatwić proces przygotowania się do lotu załogi, w aspekcie możliwości szybkiej analizy obciążenia masowego śmigłowca. Zaprojektowano rozmyty system ekspercki w oprogramowaniu Matlab oraz przeprowadzono symulację jego działania w programie Simulink.
The article discusses the Guimbal Cabri G2 aerodynamic properties. The main question is what is helicopter rising altitude under initial conditions assumed in the project. The aircraft, crew and baggage weight analysis were the scope. The altitude and the minimum time in which the helicopter ascends were assessed. The designed project can be used in the wide spectrum of the air tasks. It will provide improvements during crew pre-flight preparations in terms of heli-copter weight capacity. Matlab and Simulink software was used in designing and work simulation process.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 1212-1216
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy-logic expert system to estimate the risks of high-speed railways projects
System ekspercki do oceny ryzyka projektów kolei dużych prędkości
Autorzy:
Vygnanov, A. A.
Fironov, A. N.
Powiązania:
https://bibliotekanauki.pl/articles/317204.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
zarządzanie ryzykiem
logika rozmyta
Simulink
risk management
fuzzy logic
Opis:
Complex infrastructure projects like high-speed rail line, require a deep and comprehensive risk analysis. In the process of implementation, there are many uncertainties, changes and degree of impact of risks on the project. The article from the point of view of methodology project management the approach to risk analysis project high speed railway Moscow - Kazan, based on the methods of fuzzy logic. Developed and proposed Simulink model of risk assessment given the dynamics of development of the project.
Artykuł przedstawia aspekty zarządzania projektami metodologii podejścia do analizy ryzyka projektu szybkiej kolei Moskwa - Kazań, oparty o metody logiki rozmytej. Opracowano i zaproponowano model oceny ryzyka w programie Simulink, z uwagi na dynamikę rozwoju projektu.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 12; 651-655, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assesment of existing reinforced concrete structures with usage of the fuzzy logic - based expert system
Autorzy:
Tur, Viktar
Yalavaya, Yuliya
Powiązania:
https://bibliotekanauki.pl/articles/132073.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
expert system
fuzzy logic
existing structures
Opis:
Fuzzy logic is a useful tool when assessing the existing reinforced concrete structures. The introduction of expert system in assessing the technical condition of the existing structures built on the fuzzy logic represents a transition to a new and higher-quality level for the survey of constructions sites. As a result, it is seen that the assessment of the existing building with the usage of the proposed expert system complies with the estimation of the qualified experts.
Źródło:
Modern Engineering; 2019, 2; 61-70
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Construction of an Expert System Based on Fuzzy Logic for Diagnosis of Analog Electronic Circuits
Autorzy:
Grzechca, D. E.
Powiązania:
https://bibliotekanauki.pl/articles/226616.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
analog circuits fault diagnosis
analog system testing
fuzzy set theory
expert system
sensitivity analysis
Opis:
The paper presents construction of the fuzzy logic system to analog circuits parametric fault diagnosis. The classical dictionary construction is replaced by fuzzy rule system. The first part refers to analog fault diagnosis, its techniques, approaches and goals. It clarifies common strategy and define differences between detecting, locating and identifying a fault in analog electronic circuit. The second part is focused on a creation of fuzzy rule expert system with use of sensitivity functions and known circuit topology. To detect, locate and identify a faulty element in a circuit the sensitivity matrix is used. The advantage of the method is its utilization in all, AC, DC and time domain. The fuzzy system, like the classical fault dictionary, can detect and locate single catastrophic faults and, on the contrary to the classical one, it also detects and locates parametric faults. Moreover, it allows identification of these faults, such that sign of the faulty parameter deviation is designated. The method has deterministic character as well as it can be applied on the verification and production stage.
Źródło:
International Journal of Electronics and Telecommunications; 2015, 61, 1; 77-82
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Takagi Sugeno fuzzy expert model based soft fault diagnosis for two tank interacting system
Autorzy:
Manikandan, P.
Geetha, M.
Powiązania:
https://bibliotekanauki.pl/articles/229272.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
extended Kalman filter
fault diagnosis
fuzzy logic
two-tank system
Opis:
The inherent characteristics of fuzzy logic theory make it suitable for fault detection and diagnosis (FDI). Fault detection can benefit from nonlinear fuzzy modeling and fault diagnosis can profit from a transparent reasoning system, which can embed operator experience, but also learn from experimental and/or simulation data. Thus, fuzzy logic-based diagnostic is advantageous since it allows the incorporation of a-priori knowledge and lets the user understand the inference of the system. In this paper, the successful use of a fuzzy FDI based system, based on dynamic fuzzy models for fault detection and diagnosis of an industrial two tank system is presented. The plant data is used for the design and validation of the fuzzy FDI system. The validation results show the effectiveness of this approach.
Źródło:
Archives of Control Sciences; 2014, 24, 3; 271-287
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of FTS model of ship motion based on expert shiphandling knowledge
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/320627.pdf
Data publikacji:
2009
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
system ekspercki
ruch statków
kontroler o rozmytej logice
expert system
ship motion
fuzzy logic controller
Opis:
The paper presents a concept of FTS model of ship motion reflecting navigator's decision process while entering a Świnoujscie harbour on specific ship type at given hydrometeorological conditions. The conceptual model has been based on the fuzzy logic controller with expert database formed by manoeuvres obtained from the real-time non-autonomous trials classified in relation to expert manoeuvre impact on ship's advance, lateral and rotation speed and her position in reference to the present ship status.
Źródło:
Annual of Navigation; 2009, 15; 117-124
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An application of intuitionistic fuzzy analytic hierarchy process in ship system risk estimation
Autorzy:
Nguyen, H.
Powiązania:
https://bibliotekanauki.pl/articles/244796.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
intuitionistic fuzzy sets
risk estimation
expert judgment
ship propulsion system
analytic hierarchy process (AHP)
sea transport
Opis:
In this paper, we extend the analytic hierarchy process (AHP) method and the Atanassov’s intuitionistic fuzzy set (IFS) into the intuitionistic fuzzy analytic hierarchy process (IFAHP) with application in ship system risk estimation. In the safety engineering, risk estimation is in practice confronted with difficulties connected with shortage of data. In such cases, we have to rely on subjective estimations made by persons with practical knowledge in the field of interest, i.e. experts. However, in some realistic situations, the decision makers might be reluctant or unable to assign the crisp evaluation values to the comparison judgments due to his/her limited knowledge. In other words, there is a certain degree of hesitancy in human cognition and his judgment. Taking advantages of IFSs in dealing with ambiguity and uncertainty into account, the IFAHP can be used to handle with the subjective preferences of experts, who may have insufficient knowledge of the problem domain or uncertainty in assigning the evaluation values to the objects considered. This paper also develops a new knowledge-based ranking method to derive the priority vector of the hierarchy. An illustrative example of the propulsion risk estimation of container carriers operating on the North Atlantic line is given to show the applicability and effectiveness of the proposed method.
Źródło:
Journal of KONES; 2016, 23, 3; 365-372
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interval-valued intuitionistic fuzzy failure modes and effect analysis of the system failure risk estimation
Autorzy:
Nguyen, H.
Powiązania:
https://bibliotekanauki.pl/articles/243789.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
interval-valued intuitionistic fuzzy sets
failure modes
effects analysis
system failure risk estimation
expert judgment
Opis:
Among the risk assessment methods, failure modes and effects analysis (FMEA) is a popular, widely used engineering technique in many areas. It can be used to identify and eliminate known or potential failure modes to enhance reliability and safety of complex systems. In practice, risk estimations encounter difficulties connected with shortage of data. In such cases, we have to rely on subjective estimations made by persons with practical knowledge in the field of interest, i.e. experts. However, in some realistic situations, the decision makers might be unable to assign the exact values to the evaluation judgments due to his/her limited knowledge. In other words, there is a certain degree of hesitancy in human cognition and his/her judgment, who may have insufficient knowledge of the problem domain or uncertainty in assigning the evaluation values to the objects considered. In order to deal with ambiguity and uncertainty in the imperfect information, there have been recently proposed many various such theories as fuzzy sets, interval-valued fuzzy sets, type-2 fuzzy sets, hesitant sets, grey sets, rough sets and intuitionistic fuzzy sets. They have drawn more and more attention of scholars and been adopted in many applications This article addresses the Atanassov’s interval-valued intuitionistic fuzzy sets and FMEA methods in the risk estimation of the system failures based on the expert judgments.
Źródło:
Journal of KONES; 2017, 24, 2; 159-166
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Expert System Coupled With a Hierarchical Structure of Fuzzy Neural Networks for Fault Diagnosis
Autorzy:
Calado, J. M. F.
Costa, I. S.
Powiązania:
https://bibliotekanauki.pl/articles/908283.pdf
Data publikacji:
1999
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
rozpoznanie błędu
wykrywanie błędu
system ekspertowy
sieć neuronowa rozmyta
fault diagnosis
fault detection
fault isolation
shallow knowledge
deep knowledge
expert system
fuzzy neural network
abrupt faults
incipient faults
Opis:
An on-line fault diagnosis system, designed to be robust to the normal transient behaviour of the process, is described. The overall system consists of an expert system cascade with a hierarchical structure of fuzzy neural networks, corresponding to a multi-stage fault detection and isolation system. The fault detection is performed through the expert system by means of fault detection heuristic rules, generated from deep and shallow knowledge of the process under consideration. If a fault is detected, the hierarchical structure of fuzzy neural networks starts and it performs the fault isolation task. The structure of this diagnosis system was designed to allow for the diagnosis of single and multiple simultaneous abrupt and incipient faults from only single abrupt fault symptoms. Also, it combines the advantages of both fuzzy reasoning and neural networks learning capacity. A continuous binary distillation column has been used as a test bed of the current approach. Single, double and triple simultaneous abrupt faults, as well as incipient faults, have been considered. The preliminary results obtained show a good accuracy, even in the case of multiple faults.
Źródło:
International Journal of Applied Mathematics and Computer Science; 1999, 9, 3; 667-687
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy logic system for rectification of erroneous measurements caused by human intervention in HPFF installation
Autorzy:
Wenerski, M.
Tomala, R.
Marciniak, P.
Kotas, R.
Powiązania:
https://bibliotekanauki.pl/articles/398021.pdf
Data publikacji:
2011
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
logika rozmyta
HPFF
wykrywanie
system ekspertowy
fuzzy logic
high-pressure fluid-filled cables
detection
expert system
Opis:
The goal of this paper is to present a solution for detection of human interference in leak detection system for HPFF installation. This solution is based on fuzzy logic. In HPFF systems, that were base of this work, three different types of human interference were observed. For each of them separate systems were developed. This paper describes different types of possible human intervention and solutions for its detection.
Źródło:
International Journal of Microelectronics and Computer Science; 2011, 2, 1; 12-16
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Propozycja systemu ekspertowego opartego o rozmyte wnioskowanie do oceny jakości węgla
Proposal of an expert system based on fuzzy logic designed for evaluation of coal quality
Autorzy:
Gornig, A.
Powiązania:
https://bibliotekanauki.pl/articles/187108.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
jakość węgla
ocena jakości węgla
system ekspertowy
coal quality
evaluation of coal quality
expert system
Opis:
W artykule przedstawiono potrzebę utworzenia systemu ekspertowego opartego o rozmyte wnioskowanie do oceny jakości węgla. We wprowadzeniu opisano podstawowe założenia systemu ekspertowego. W dalszej części sprecyzowano pojęcie jakości węgla i opisano parametry węgla pod kątem prognozowanego procesu wzbogacania wytwarzającego produkt handlowy. Ukazano specyfikę zakładu przeróbki węgla, która powinna być uwzględniona w utworzonym systemie ekspertowym.
The paper presents necessity of development of an expert system based on fuzzy logic to be designed for coal quality evaluation. The introduction includes a foredesign (basic assumptions) of an expert system. Next there has been determined a concept of coal quality. Furthermore the parameters of coal have been described regarding a forecasted process of coal preparation aimed at production of a commercial product. A specificity of a coal preparation plant has been shown, which should be taken into account in the expert system to be developed.
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2010, R. 48, nr 1, 1; 46-51
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance comparision of different routing protocols with fuzzy inference system in manet
Autorzy:
Goswami, S
Joardar, S
Das, C B
Powiązania:
https://bibliotekanauki.pl/articles/101870.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
MANET
AODV
DSDV
DSR
expert system
control overhead
delay
PDR
NS-2 software
Opis:
An ad hoc wireless network consists of mobile networks which create an underlying architecture for communication without the help of traditional fixed-position routers. There are different protocols for handling the routing in the mobile environment. Routing protocols used in fixed infrastructure networks cannot be efficiently used for mobile ad-hoc networks (MANET), so it requires different protocols. The node moves at different speeds in an independent random form, connected by any number of wireless links, where each node is ready to pass or forward both data and control traffic unrelated to its own use ahead (routing) to other nodes in a flexible interdependence of wireless communication in between. In contrast to infrastructure wireless networks, where the communication between network nodes is take place by a special node known as an access point. It is also, in contrast to wired networks in which the routing task is performed by special and specific devices called routers and switches. In this paper, we consider fuzzy inference system, an attempt has been made to present a model using fuzzy logic approach to evaluate and compare three routing protocols i.e. AODV, DSDV and DSR using effective factor of the number of nodes based on 3 outputs of control overhead, delay and PDR (totally fuzzy system with 4 outputs) in order to select one of these two routing protocols properly under different conditions and based on need and goal. To show efficiency and truth of fuzzy system, three protocols have been evaluated equally using NS-2 simulator and attempt has been made to prove efficiency of the designed fuzzy system by comparing results of simulation of fuzzy system and NS-2 software.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 27; 149-156
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Expert System for Automatic Classification of Sound Signals
Autorzy:
Tyburek, Krzysztof
Kotlarz, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/307799.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
audio descriptors
bird species
fuzzy classification of audio signals
MPEG-7
spectral features of sound
Opis:
In this paper, we present the results of research focusing on methods for recognition/classification of audio signals. We consider the results of the research project to serve as a basis for the main module of a hybrid expert system currently under development. In our earlier studies, we conducted research on the effectiveness of three classifiers: fuzzy classifier, neural classifier and WEKA system for reference data. In this project, a particular emphasis was placed on fine-tuning the fuzzy classifier model and on identifying neural classifier applications, taking into account new neural networks that we have not studied so far in connection with sounds classification methods.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 2; 86-90
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
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