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Wyszukujesz frazę "Anti-Lock system" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Blending control of the trolleybus traction and brake drives to enhance the braking efficiency of a vehicle
Autorzy:
Safonau, Andrei
Vovk, Yuriy
Lyashuk, Oleg
Khudobei, Roman
Powiązania:
https://bibliotekanauki.pl/articles/2141106.pdf
Data publikacji:
2020
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
trolleybus
anti-lock braking system
traction control
Opis:
Widespread usage of emission free public transport is the preferred strategy in many cities to reduce a congestion and pollution from the road traffic. The trolleybus is a kind of urban public transport, i.e. a fully electric vehicle, which is considered as a promising tool to enhance the efficiency of public transport and to attain the goals of sustainable development and quality of city life. The operation control of service brake system and secondary brake system (the braking torque of traction electric motor) is realized with help of one pedal in the trolleybus. Thus, there are modes of the joint operation for these systems during the braking process. Authors focus on the development of rule-based algorithm for the blending control of traction electric motor and anti-lock braking system to enhance the overall braking efficiency of a vehicle. The mathematical model of the trolleybus braking dynamics was developed for this purpose. Test bench and ride tests on different road surfaces were carried out to determine the parameters of vehicle braking efficiency and to validate the developed mathematical model. The corresponding experimental data were used to analyse the efficiency of proposed rule-based strategy for the blending control of traction electric motor and anti-lock braking system of the trolleybus. As a result, the availability of proposed control algorithm is confirmed, which secures the required braking efficiency and provides a high braking stability of the vehicle.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2020, 5, 2; 49-61
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of calculating the design parameters of a modulator anti-lock braking system with a high flow of working fluid
Autorzy:
Zhilevich, Mikhail
Ermilov, Sergey
Kapski, Denis
Vovk, Yuriy
Lyashuk, Oleg
Vovk, Iryna
Powiązania:
https://bibliotekanauki.pl/articles/2116416.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
anti-lock braking system
hydraulic braking system
modulator
method of calculating
dump truck
układ przeciwblokujący
hydrauliczny układ hamulcowy
metoda obliczania
wywrotka
Opis:
The design dimensions of the executive hydraulic cylinders of the brake system of heavy-duty mining dump trucks cause high fluid flow during the braking process. Therefore, dimensions of the anti-blocking system modulator spool pair require unique electromagnets or hydraulic amplifiers to control. These solutions do not allow the required modulator performance. Thus, a modulator scheme with a division of the flow of fluid from the source to the brake cylinders was developed. This scheme allows during emergency braking passing, an additional amount of fluid to cylinders through the valve, installed parallel to the main valve upon pressure increase phase and controlled by the pressure difference. The task is to develop a method for calculating the main structural dimensions of a modulator. The calculation of the valve of the second cascade, installed in parallel to the main stage, is carried out for the emergency braking mode with the maximum flow rate to ensure the required performance of the braking system. The balance of fluid flows equations is compiled at the key points. The flow rate of the fluid through each of the valves is determined by the Torricelli formula, and the pressure difference across the valves is assuned equal. The obtained relations allows building a family of Q-p curves, which can be used to select the diameter and stroke of the additional valve depending on the flow rate in the brake system.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 110; 199--210
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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