Wyniki wyszukiwania - BazTech

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Fuzzy expert system for adaptive vessel traffic control on one-way section on navigable canal

Bugarski Vladimir, Bačkalić Todor, Kanović Željko, Kulić Filip, Zeković Miloš

Transport Problems

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2019

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T. 14, z. 4

39--50

EN

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.

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Different defuzzification methods in Guimbal Cabri G2 helicopter takeoff possibility evaluation

Mendrek M., Grzesik N., Krzyżak A., Kuźma K.

Transport Problems

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2018

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T. 13, z. 2

27--38

EN

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.

3

Wspomaganie wybranych procesów zarządzania wiedzą przez regułowe systemy ekspertowe

Michalik K.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Łódzka

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2013

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z. 53

131--142

PL

Artykuł omawia wybrane procesy zarządzania wiedza w organizacjach i możliwość wspomagania ich przez regułowe systemy ekspertowe. Przedstawiono przykłady zastosowań tych systemów w omawianych dziedzinach. Jednym z nich jest autorski system PC-Shell, będący częścią pakietu sztucznej inteligencji SPHINX.

EN

The paper deals with the possibility of supporting selected processes of knowledge management using rule-based expert systems technology. The selected processes are: knowledge acquisition, codification, transfer, retention and sharing knowledge. Some basic information about expert systems and knowledge representation using rules was also added. The thesis of possibility of knowledge management support by means of expert systems was justified by showing some successful applications in that domain. Additionally, some systems: PC-Shell, Sphinx and Aitech DSS, designed and implemented by author, were also mentioned.