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Wyszukujesz frazę "Dynamic management" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Cooperative driving at isolated intersections based on the optimal minimization of the maximum exit time
Autorzy:
Wu, J.
Abbas-Turki, A.
Perronnet, F.
Powiązania:
https://bibliotekanauki.pl/articles/331216.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
cooperative driving
wireless communication
autonomous intersection management
dynamic programming
komunikacja bezprzewodowa
zarządzanie autonomiczne
programowanie dynamiczne
Opis:
Traditional traffic control systems based on traffic light have achieved a great success in reducing the average delay of vehicles or in improving the traffic capacity. The main idea of these systems is based on the optimization of the cycle time, the phase sequence, and the phase duration. The right-of-ways are assigned to vehicles of one or several movements for a specific time. With the emergence of cooperative driving, an innovative traffic control concept, Autonomous Intersection Management (AIM), has emerged. In the framework of AIM, the right-of-way is customized on the measurement of the vehicle state and the traffic control turns to determine the passing sequence of vehicles. Since each vehicle is considered individually, AIM faces a combinatorial optimization problem. This paper proposes a dynamic programming algorithm to find its optimal solution in polynomial time. Experimental results obtained by simulation show that the proper arrangement of the vehicle passing sequence can greatly improve traffic efficiency at intersections.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 773-785
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An autonomous vehicle sequencing problem at intersections: A genetic algorithm approach
Autorzy:
Yan, F.
Dridi, M.
El Moudni, A.
Powiązania:
https://bibliotekanauki.pl/articles/329874.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
autonomous vehicle
autonomous intersection management
genetic algorithm
dynamic programming
heuristics
pojazd autonomiczny
algorytm genetyczny
programowanie dynamiczne
Opis:
This paper addresses a vehicle sequencing problem for adjacent intersections under the framework of Autonomous Intersection Management (AIM). In the context of AIM, autonomous vehicles are considered to be independent individuals and the traffic control aims at deciding on an efficient vehicle passing sequence. Since there are considerable vehicle passing combinations, how to find an efficient vehicle passing sequence in a short time becomes a big challenge, especially for more than one intersection. In this paper, we present a technique for combining certain vehicles into some basic groups with reference to some properties discussed in our earlier works. A genetic algorithm based on these basic groups is designed to find an optimal or a near-optimal vehicle passing sequence for each intersection. Computational experiments verify that the proposed genetic algorithms can response quickly for several intersections. Simulations with continuous vehicles are carried out with application of the proposed algorithm or existing traffic control methods. The results show that the traffic condition can be significantly improved by our algorithm.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2013, 23, 1; 183-200
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative calculation of the fuel-optimal operating strategy for diesel hybrid railway vehicles
Autorzy:
Leska, M.
Aschemann, H.
Melzer, M.
Meinert, M.
Powiązania:
https://bibliotekanauki.pl/articles/330621.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
hybrid railway vehicle
fuel optimal energy management
dynamic programming
sensitivity optimisation
pojazd szynowy
pojazd hybrydowy
gospodarka energetyczna
programowanie dynamiczne
Opis:
In contrast to road-based traffic, the track as well as the corresponding duty cycle for railways are known beforehand, which represents a great advantage during the development of operating strategies for hybrid vehicles. Hence the benefits of hybrid vehicles regarding the fuel consumption can be exploited by means of an off-line optimisation. In this article, the fuel-optimal operating strategy is calculated for one specified track using two hybrid railway vehicles with different kinds of energy storage systems: on the one hand, a lithium-ion battery (high-energy storage) and, on the other, a double layer capacitor (high-power storage). For this purpose, control-oriented simulation models are developed for each architecture addressing the main effects contributing to the longitudinal dynamics of the power train. Based on these simulation models, the fuel-optimal operating strategy is calculated by two different approaches: Bellman’s dynamic programming, a well-known approach in this field, and an innovative sensitivity-based optimisation.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 2; 323-336
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie teorii odnowy w racjonalizacji okresu eksploatacji środków transportu
The application of the renewal theory in rationalizing the period of operation of transport measures
Autorzy:
Cisowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/313347.pdf
Data publikacji:
2018
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
teoria odnowy
eksploatacja środków transportu
programowanie dynamiczne
efektywność zarządzania
renewal theory
operation of means of transport
dynamic programming
management efficiency
Opis:
W pracy pokazano zastosowanie teorii odnowy do wyznaczania optymalnego czasu eksploatacji środków transportu. Rozwiązanie tego typu oparto na programowaniu dynamicznym. Przedstawiono przykład obliczeń dla samochodu marki MAN TGS 18.400.
The use of the regeneration theory to determine the optimal operating time of means of transport is shown in the paper. The solution of this problem is based on dynamic programming. An example of calculations for MAN TGS 18.400.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 6; 380-383, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of rule-based energy management strategies for hybrid vehicles using dynamic programming
Autorzy:
Zhu, Di
Pritchard, Ewan
Dadam, Sumanth Reddy
Kumar, Vivek
Xu, Yang
Powiązania:
https://bibliotekanauki.pl/articles/2097501.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
energy management strategy
rule-based
dynamic programming
OBD
on-board diagnostics
hybrid electric vehicles
strategia zarządzania energią
systemy oparte na regułach
programowanie dynamiczne
diagnostyka pokładowa samochodu
hybrydowe pojazdy elektryczne
Opis:
Reducing energy consumption is a key focus for hybrid electric vehicle (HEV) development. The popular vehicle dynamic model used in many energy management optimization studies does not capture the vehicle dynamics that the in-vehicle measurement system does. However, feedback from the measurement system is what the vehicle controller actually uses to manage energy consumption. Therefore, the optimization solely using the model does not represent what the vehicle controller sees in the vehicle. This paper reports the utility factor-weighted energy consumption using a rule-based strategy under a real-world representative drive cycle. In addition, the vehicle test data was used to perform the optimization approach. By comparing results from both rule-based and optimization-based strategies, the areas for further improving rule-based strategy are discussed. Furthermore, recent development of OBD raises a concern about the increase of energy consumption. This paper investigates the energy consumption increase with extensive OBD usage.
Źródło:
Combustion Engines; 2021, 60, 1; 3--10
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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