JournalTOCs

International Journal of Vehicle Systems Modelling and Testing
Journal Prestige (SJR): 0.278

Citation Impact (citeScore): 1
Number of Followers: 2

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1745-6436 - ISSN (Online) 1745-6444
Published by Inderscience Publishers

[451 journals]

Tyre inflation pressure effects on the transient handling performance of a
multipurpose protected vehicle
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  Authors: Manuel Tentarelli, Alessio Pizzi
  Pages: 205 - 221
  Abstract: One of the main requirements for military vehicles is the capability to move over all types of terrain. For this purpose, many military vehicles allow the driver to change tyre inflation pressure to improve the mobility over soft soils. Although various studies have investigated the effect of the inflation pressure on the interaction between tyre and soil, to date there has not been an adequate analysis of the effects of the lateral vehicle dynamics on the road. A multipurpose protected vehicle (MPV) was instrumented and tested with a campaign of sweep steer tests at different tyre inflation pressures; experimental data were analysed in order to evaluate modifications on lateral handling performance. Although our tests did not show any compromise in directional stability, MPV dynamics on the road were found to be globally degraded by reducing tyre inflation pressure.
  Keywords: military vehicles; MPV; multipurpose protected vehicles; vehicle dynamics; tyre inflation pressure; transient handling performance; directional stability; roll angle; sweep steer test; personnel safety; driver training
  Citation: International Journal of Vehicle Systems Modelling and Testing, Vol. 15, No. 4 (2021) pp. 205 - 221
  PubDate: 2022-05-13T23:20:50-05:00
  DOI: 10.1504/IJVSMT.2021.122816
  Issue No: Vol. 15, No. 4 (2022)
Development and validation of a real-time capable vehicle dynamics
simulation environment for road and test bench applications
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  Authors: Alexander Ahlert, Alexander Fridrich, Werner Krantz, Jens Neubeck
  Pages: 222 - 243
  Abstract: Holistic, real-time capable models, which are able to describe the overall 3D vehicle dynamics and nonlinear wheel suspension behaviour, are necessary for different applications like, e.g., control system design and HIL test system operation. In this paper a vehicle dynamics modelling approach is presented together with a methodology to derive the equations of motion and adapt them to special applications like simulating a vehicle on a test bench. With the presented methodology and by using symbolic computation, the equations are obtained in analytical form with a minimal set of ordinary differential equations. The equations can be easily manipulated, simplified and evaluated according to the given task. This is especially valuable for overall vehicle test benches, wherefore the equations are needed for model-based control design and parameter identification. To prove the simulation environments' validity, the resulting vehicle model for road applications is compared to commercial, state of the art vehicle dynamics simulation tools.
  Keywords: nonlinear multibody vehicle model; real-time simulation; modelling and simulation methodology; multi-purpose modelling; LEICHT wheel suspension
  Citation: International Journal of Vehicle Systems Modelling and Testing, Vol. 15, No. 4 (2021) pp. 222 - 243
  PubDate: 2022-05-13T23:20:50-05:00
  DOI: 10.1504/IJVSMT.2021.122814
  Issue No: Vol. 15, No. 4 (2022)
Vehicles' directional stability control: literature survey
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  Authors: Moataz Ahmed, Haoxiang Lang, Moustafa El-Gindy
  Pages: 244 - 273
  Abstract: Lateral dynamic control for ground vehicles has been under study for more than three decades to ensure safe driving. Lateral dynamics was involved in automotive engineering in two areas of study. The first is lateral stability control to enhance the vehicle directional stability. The second is vehicle autonomy to secure stability while tracking a path at high speed. The state of art and development in control methodologies of the most notable researches in these two areas will be reviewed in this paper. Besides, the inclusion of lateral dynamic control in the autonomous application will be discussed to show the area of research that is not covered yet and requires more attention to improve both stability and tracking the performance of ground vehicles.
  Keywords: stability control; vehicles' directional control; direct yaw control; torque vectoring; active steering; path following
  Citation: International Journal of Vehicle Systems Modelling and Testing, Vol. 15, No. 4 (2021) pp. 244 - 273
  PubDate: 2022-05-13T23:20:50-05:00
  DOI: 10.1504/IJVSMT.2021.122819
  Issue No: Vol. 15, No. 4 (2022)
Remaining energy estimation strategy for lithium-ion battery pack
based on RLS-UKF algorithm
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  Authors: Qiuting Wang, Wei Qi, Duo Xiao
  Pages: 274 - 288
  Abstract: The paper focuses on modelling method and online estimation strategy to estimate the remaining energy of lithium-ion battery pack. New estimation method is based on system complexity analysis and it can describe the external characteristics of different temperatures and frequencies for battery model. The recursive least squares (RLS) algorithm is introduced to update the battery parameters online. The relationship equations between the remaining energy of battery pack and the state of charge (SOC) of the single cell is established. Meanwhile, unscented Kalman filtering (UKF) algorithm is used to estimate the remaining energy online. The influence of temperature and charge/discharge ratio is considered. Finally, the inconsistent influence between different cells is analysed. The validity and reliability of our new model and estimation strategy are verified under UDDC experiments. The experimental results are compared under real-time conditions.
  Keywords: vehicle system; lithium-ion battery pack; remaining energy; SOC; state of charge; recursive least squares; UKF; unscented Kalman filtering; system complexity analysis
  Citation: International Journal of Vehicle Systems Modelling and Testing, Vol. 15, No. 4 (2021) pp. 274 - 288
  PubDate: 2022-05-13T23:20:50-05:00
  DOI: 10.1504/IJVSMT.2021.122826
  Issue No: Vol. 15, No. 4 (2022)
Rear wing spoiler effects on vehicle stability and aerodynamic performance
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  Authors: H. Ragheb, M. El-Gindy
  Pages: 289 - 307
  Abstract: Nowadays, it is useful to understand the aerodynamic effects of the rear vehicle spoiler because of financial protection as well as environmental issues. The rear spoiler plays a major role in vehicle aerodynamics, improving agility, driving stability, handling, fuel consumption, acceleration and braking by optimal angle, size and shape to achieve the best performance of the vehicle. In the last decade, substantial efforts have been invested in the restrictions of modern wind tunnel tests and prompt advances in computer technology to research vehicle aerodynamics computationally. This paper uses commercial fluid dynamic software ANSYS FLUENT ® to study air flow around the car with a rear spoiler. A 4-door sedan car 3D computer model, to be built with SolidWorks ® commercial software, will be used in this study. Different designs of rear spoilers will be placed and simulated to determine their aerodynamic effects. Furthermore, the rear spoiler angle and height are investigated to reach the optimal aerodynamic performance for the car.
  Keywords: aerodynamics; CFD; computational fluid dynamics; spoiler; lift coefficient; drag coefficient
  Citation: International Journal of Vehicle Systems Modelling and Testing, Vol. 15, No. 4 (2021) pp. 289 - 307
  PubDate: 2022-05-13T23:20:50-05:00
  DOI: 10.1504/IJVSMT.2021.122817
  Issue No: Vol. 15, No. 4 (2022)