scholarly journals Unmanned all-terrain cargo and passenger transportation system for operation conditions when automobile roads are unavailable

2019 ◽  
Vol 1177 ◽  
pp. 012043 ◽  
Author(s):  
B A Safonov ◽  
A N Travnikov
2017 ◽  
Vol 16 (5) ◽  
pp. 437-443 ◽  
Author(s):  
C. V. Dolya

he paper considers a possibility to apply gravity models for calculation of intercity passenger transport corres- pondences which are implemented with the help of public transport. The Ukraine transportation system has been selected as an object of investigation and this approach extends application possibilities of the obtained results. Calibration coefficients used in calculation of the indicated correspondences are rather important and significant in case of forecasting passenger transport correspondences. Formalization of these factors is necessary for every transportation system if a calculation of pas-senger transport correspondences has been made for it. In this case searching for actual calibration parameters and other coef-ficients as components of gravitational models is a relevant objective of the given paper. Selection of the gravity model va- riant plays rather significant role in solution of this problem. The developed methods for calculation of passenger transport correspondences are proposed for their application in respect of various transport and trip types. The executed research works have made it possible to investigate a process pertaining to providing of services for passenger transportation while using public routes. The obtained characteristics on functioning of the studied system have allowed to assess the possibility for ap-plication of the known methods for calculation of passenger correspondences and analyze the quality of their application. Calibration coefficients have been empirically selected for calculation of the indicated correspondences while using method of gravity modeling. Formalization of previously unexplored parameters of gravity model component provides the possibility to apply the considered approach for calculation of passenger correspondences within the framework of the investigated trans-portion system. This makes it possible to plan and arrange interaction of various transport types and provides new data and knowledge on the studied system.


2017 ◽  
Vol 4 (2(36)) ◽  
pp. 24-28
Author(s):  
Constantine Dolya ◽  
Anastasiia Botsman ◽  
Viktoriia Kozhyna

2019 ◽  
Vol 11 (3) ◽  
pp. 168781401982959
Author(s):  
Ciyun Lin ◽  
Xiangyu Zhou ◽  
Bowen Gong

This study proposes trusted measurement and evaluation models for intelligent transportation system products to provide technological means for the transport sector and government departments to detect the compliance and availability of intelligent transportation system products and consider the market access of intelligent transportation system products. Then, this study builds a trusted testing platform based on a hardware-in-loop system to test and validate trusted measurement and evaluation models of intelligent transportation system products. Finally, a traffic signal controller is tested and validated in the platform in different operation environments. The result shows that the trusted measurement model can accurately measure the trusted status in normal and non-normal operation conditions, and the trusted evaluation model can dynamically calculate the intelligent transportation system product’s trusted attributes, namely, the trusted evaluation values and comprehensive trusted evaluation values of the intelligent transportation system product, as the intelligent transportation system product’s operation environment changes.


2020 ◽  
pp. 86-89
Author(s):  
Б.С. Антропов ◽  
В.В. Капралов ◽  
В.В. Гумённый ◽  
В.А. Генералов

При выборе метода оценки условий эксплуатации автотракторных дизельных двигателей необходимо учитывать, среди прочих факторов, наиболее часто используемые фазы движения конкретного автомобиля, от которых зависит режим работы двигателя. В статье предложены критерии качественной оценки условий эксплуатации для различных транспортных средств. Для оценки «тяжести» условий эксплуатации тракторов при выполнении различных сельскохозяйственных работ (пахота, боронование, посев и др.) целесообразно учитывать средний эксплуатационный расход топлива. В этом случае указанный параметр определяется отношением общего расхода топлива в литрах к общему времени выполнения трактором конкретной работы в часах. Для автобусов, работающих на маршрутах «Ярославль – центры муниципальных образований», как и для аналогичных перевозок в других регионах нашей страны, рассматриваемый параметр малоинформативен. Здесь для оценки их условий эксплуатации имеет смысл использовать коэффициент КS – количество остановок, приходящееся на один километр маршрута. Для автопредприятий, осуществляющих перевозки пассажиров по указанным маршрутам, рекомендуется проводить плановую ротацию автобусов по маршрутам согласно составленному графику, что позволит усреднить показатели надёжности узлов и агрегатов автобусов (неисправности и отказы) до их капитального ремонта. When choosing a method for assessing the operating conditions of diesel motor engines, it is necessary to take into account, among other factors, the most commonly used phases of movement of a particular vehicle on which engine operating condition depends. The article proposes criteria for the qualitative assessment of operating conditions for various vehicles. It is advisable to take into account the average operational fuel consumption in order to assess the "heaviness" of tractor operation conditions when doing various agricultural works (plowing, harrowing, sowing, etc.). In this case, specified parameter is determined by the ratio of the total fuel consumption in liters to the total tractor time of the particular operation in hours. For buses operating on the routes "Yaroslavl – centers of municipalities", as for similar transportation in other regions of our country, the parameter under consideration is not informative. Here, to evaluate their operating conditions, it makes sense to use the KS coefficient – the number of stops per kilometer of the route. For automobile companies carrying out passenger transportation along the indicated routes, it is recommended to carry out a planned rotation of buses along the routes according to the made up schedule, which will allow averaging the individual reliability of bus assemblies (faults and failures) before their general overhaul.


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