Sogol Kharrazi


Bild på Sogol Kharrazi

Sogols forskningsresultat


A Framework for Credibility Assessment of a Powertrain Model in Driving Simulator Studies

When performing a driving simulator study, validity of the vehicle model for the intended driving task is of key importance; otherwise, the reliability of the study results might be jeopardized. In this paper a framework for real-time credibility...

A Heavy Vehicle Dynamics Model for Driving Simulators

The aim of the present paper was to develop and validate a heavy vehicle dynamics model for driving simulators. The model was thought to be open, with a high level of readability and flexibility for future understanding, modification and use. A...

Model and Road Surface Sensitivity of Longitudinal Performance Based Standards

Performance-based standards (PBS) is a regulation policy to address the complexity of variations in vehicle combinations. It enables a direct way of addressing certain requirements associated with the safety, environment and road network and their...

Parameterization procedure of a powertrain model for a driving simulator

The automotive industry is facing a major challenge to reduce environmental impacts. As a consequence, the increasing diversity of powertrain configurations put a demand on testing and evaluation procedures. One of the key tools for this purpose is...

Performance of High Capacity Vehicles, Winter Versus Summer

The transport sector is facing a major challenge to reduce energy consumption and limit environmental impact; therefore, there is a great interest in increasing the efficiency of the transport system in Sweden, which makes the High Capacity Vehicles...

Limit handling in a driving simulator

Körsimulatorstudier som involverar körning på gränsen till fordonets förmåga (handling-gränsen) behöver fordonsmodeller som på ett korrekt sätt kan modellera dessa situationer. Syftet med detta arbete har varit att undersöka hur VTI:s körsimulator...

Parameterization Procedure of a Powertrain Model for a Driving Simulator

The automotive industry is facing a major challenge to reduce environmental impacts. As a consequence, the increasing diversity of powertrain configurations put a demand on testing and evaluation procedures. One of the key tools for this purpose is...

Performance based standards for high capacity transports in Sweden: FIFFI project...

Projektet “Performance Based Standards for High Capacity Transports in Sweden” startade i slutet av 2013 för att undersöka möjligheterna att applicera prestandabaserade kriterier, eller Performance Based Standards (PBS), i Sverige. Vid...

Performance based standards for vehicle combinations with weight and/or dimensions...

Denna rapport innehåller samlad information från en CEDR förstudie med målet att lista relevanta säkerhets-, manövrerbarhets-, infrastruktur- och miljörelaterade kriterier för längre och/eller tyngre fordon. Dessutom identifieras forskningsområden...

Study of industrially applied methods for verification, validation and uncertainty...

To better utilize the potential of system simulation models and simulators, industrially applicable methods for Verification, Validation and Uncertainty Quantification (VV&UQ) are crucial. This paper presents an exploratory case study of VV&UQ...

Testing Vehicle Performance on Snow Using Sine with Dwell

Measuring and evaluating vehicle and tire performance in winter conditions are highly motivated by accident statistics. The present paper investigates use of the sine with dwell maneuver in this context. Various aspects of winter testing is...

Towards performance based standards in Sweden

The large increase in the goods transport demands, the growing congestion problem and the environmental concerns over transportation emissions and fuel consumption, make High Capacity Transport (HCT) vehicles an attractive alternative to the...

Traffic safety of Heavy Goods Vehicles and implications for High Capacity Transport...

The paper summarizes the results of the programme "Traffic safety effects of High Capacity Transport (HCT) vehicles and suggestions for compensatory measures" this far. An analysis of ten years of Swedish accident data shows that "long" combinations...

Validating on-the-limit properties of a driving simulator

The paper describes a validation model for both subjective and objective comparison of on-the-limit properties of a driving simulator. VTI moving base driving simulator, SIM III, has been used with three different versions of VTI’s vehicle model,...

Towards a method for determining maximum oversteer in slippery conditions

Fatal accidents during winter time in Sweden are to a large extent due to vehicle spinning. Therefore, it is crucial to analyse and compare vehicle/tyre performance on slippery roads with respect to oversteering. In this study, a new test method for...