Faculty of Mechanical Engineering

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COMPARATIVE ANALYSIS OF CAR FOLLOWING MODELS BASED ON DRIVING STRATEGIES USING SIMULATION APPROACH
(MOBILITY & VEHICLE MECHANICS International Journal for Vehicle Mechanics , Engines and Transportation Systems, 2018)
Vase Jordanoska
;
Igor Gjurkov
;
Darko Danev
Transportation and traffic affect all the aspects of everyday life. To better understand traffic dynamics traffic models are developed. On microscopic level, carfollowing models are developed and improved during long period of time. They are used in traffic simulation tools or are the basis for operation in some advanced vehicle systems. Carfollowing models describe traffic dynamics through movement of individual vehicle-driver units. This paper compares Gipps model and Intelligent Driver Model (IDM) as carfollowing models based on driving strategies. These models are derived based on assumptions such as keeping safe distance from the leading vehicle, driving at a desired speed and producing accelerations within a comfortable range. The models are implemented and simulated in MATLAB environment and the results are discussed in terms of the ability to reproduce real driving behaviour in car following scenarios.
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ПОТЕНЦИЈАЛНИ РИЗИЦИ ОД УПОТРЕБАТА НА ТЕЧНИОТ НАФТЕН ГАС КАКО ПОГОНСКО ГОРИВО КАЈ МОТОРНИТЕ ВОЗИЛАТА
(2016)
Vase Jordanoska
;
Darko Danev
;
Aleksandar Kostikj
Течнипт нафтен гас (ТНГ) е најширпкп упптребуванп алтернативнп гпривп кај мптпрните впзила ппкрај бензинпт и дизелпт. ТНГ кпј вп пснпва е безбпен и е без мирис, е прпизвпд пд прпцеспт на рафинираое на други гприва. Негпвата упптреба се дплжи на дпбрите гпривни карактеристики и ниската цена на чинеое. Впзилата кпи гп кпристат ТНГ какп ппгпнскп гпривп се прпизведени сп систем за наппјуваое сп ТНГ или пак, се впзила сп бензински мптпри кпи ппстпрпдажнп имаат вграденп дппплнителен систем за наппјуваое сп ТНГ. Втприте се најчестп двпгпривни впзила, пднпснп имаат мпжнпст за префрлуваое пд еднп на другп гпривп вп текпт на експлпатацијата. Дп сега ппстпјат ппвеќе генерации на системи за наппјуваое сп ТНГ кај впзилата, кпи се развивале паралелнп сп развпјпт на технплпгијата кај бензинските мптпри. Гаспт за да биде вп течна спстпјба се складира при притиспци ппмеду 2.2 и 22 bar зависнп пд пднпспт на кпмппнентите вп негп. За да се запази безбеднпста, впзилата ппремени сп ТНГ системи, какп и самите системи за наппјуваое сп ТНГ се регулирани сп правилници на Екпнпмската кпмисија за Еврппа на Обединетите нации (UNECE). Вп трудпт се дадени ризиците кпи мпжат да прпизлезат пд упптребата на ТНГ системи кај впзилата, какп и причините кпи мпжат да дпведат дп ппјава на пдредени хаварии.
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EVALUATION METHODOLOGY OF DESIGN PARAMETERS INFLUENCE TO THE BRAKING PROCESS OF PASSENGER CAR-TRAILER COMBINATION
(Proceedings of 24th JUMV International Automotive Conference Science & Motor Vehicles, 2013)
Darko Danev
;
Milan Kjosevski
;
Igor Gjurkov
;
Vase Jordanoska
In contemporary traffic, the need of movement for various forms of engagement between the passenger vehicle and the trailer becomes more intensive and emphasized. In certain conditions, in this engagement it may come to non-conformity in relation to the acceleration and braking characteristics of the combination because of design reasons. Therefore, efforts are made to achieve optimal braking performance, steering characteristics and stability through design measures and other engagement constrains of the vehicle combination. Considering the aforementioned, it all started from the suitability to determine the evaluation methodology on the impact of certain design factors to the passenger vehicle - trailer combination behavior in the braking process.
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THEORY OF NETWORK RELATED RESEARCH OF VEHICLES DYNAMICS IN URBAN ENVIRONMENT
(Proceedings of 25th JUMV International Automotive Conference Science & Motor Vehicles, 2015)
Vase Jordanoska
;
Darko Danev
;
Ljupcho Kocarev
Transport and vehicles have great impact on peoples’ life every day. Continuous increase in traffic on the roads is leading to serious issues with congestion, safety and impact on the environment. This is especially emphasized in urban areas. Networks theoryhas been and is very interesting approach studying of vehicle dynamics in urban areas which can help addressing number of said issues. This research has also added regionaldimension which could help development and introducing ITS in similar environment. In this, early stage of research, the initial results showed that the approach of presenting road infrastructure as network (graph) in vehicle simulations proves to be good and opens opportunities for deeper research.
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IDENTIFICATION OF VEHICLE AND ROAD PARAMETERS TOWARDS TRAFFIC MODELLING IN NETWORK ENVIRONMENT
(Proceedings of 26th JUMV International Automotive Conference Science & Motor Vehicles, 2017)
Vase Jordanoska
;
Darko Danev
;
Aleksandar Kostikj
Traffic congestion is one of the biggest issuethatpeople are facing with. Increased traffic flow implies to increased pollution, which affects people’s health and the environment. In such conditions arises theneedfor planning and improving of traffic flows in urban areas, but also at motorways. Traffic modeling and simulation tools have significant role in achieving these goals. The inclusion of vehicle dynamics aspects in these tools is analyzed, because this research field is multidisciplinaryand includes aspects from different scientific areas. The findings show that there is a space for improving of traffic models by adding vehicle / road parameters which will result in more realistic presentation of vehicle behavior.

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