The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Energy efficiency has become a major issue in trade, transportation and environment protection. While the next generation of zero emission propulsion systems still have difficulties in reaching similar travel distances as combustion engine propulsion systems, it is already possible to increase fuel efficiency in regular vehicles by applying a more fuel efficient driving behaviour. An adapted Dynamic...
Electric vehicle battery modeling and state-of-charge prediction has gained a lot of importance with the growing range anxiety among electric vehicle users. The future of battery implementation in electric vehicles might be in their customized design according to specific journey conditions. As such, this paper highlights the application of a novel concept — Journey Mapping for a Ford Focus Electric...
In this paper, we present a method to evaluate and optimize traffic patrol based on the generalized maximal covering model. We first build a criterion to evaluate how well a traffic patrol deployment is, and then we formulate an optimization problem for selecting optimal patrol centers from candidates. We show that the optimal patrol centers can be found by an algorithm derived from the method of...
In this work, the measurement and improvement of drivers' attitudes are aimed by using data obtained from driving experiences in virtual traffic which is created by the 3D game platform and is enriched by assisting with the Personal Traffic Lights (PeTraLi). For this multi-user simulation which can also be seen as a serious game, vehicles for drivers, driverless vehicles, intersections equipted with...
The large-scale introduction of plug-in electric vehicles (PEV) may pose challenges to power system operators by causing grid congestion or voltage fluctuations. This work presents a simulation-based approach for investigating the impact of transport electrification on power grids. The framework consists of an agent-based traffic simulation which is coupled with a power system simulation through the...
The paper presents a brief study of quadrotor vehicle, its principle of operation and its high-level dynamic model. The proposal of altitude and yaw controllers is also presented. PID, LQR (LQRI) and Lyapunov based control techniques are here compared according to Integral Absolute Error (IAE) and Control Signal Energy criteria. The performance is analyzed in terms of the response time and energy...
As big data computing is in emergence, therefore handling of large amount of data becoming a problematic day by day. Analyzing, visualizing, and managing this massive amount of data causing remarkable issues and challenges which are not even resolve through traditional technologies. Therefore it requires innovative technologies or methods to resolve issues and challenges. The main aim of this paper...
Cyberphysical systems, with their interdependence between physical behaviour and digital control, need insights from frequency domain control engineering, state space control engineering and discrete formal systems theory for their proper description. Neglecting any of these, results in descriptions that omit essential details. Hybrid Event-B is a formalism that enables all the relevant detail to...
Advanced vehicle dynamics control systems, such as integrated chassis control systems, are generally designed in a two layers structure: a tire force determination layer, and a tire force generation layer. The tire force generation layer works as a servo function that follows the force commands from the force determination layer. Therefore, the tire force generation layer should not require a lot...
The advent of heterogeneous specifications of complex systems utilizing both continuous (viz. physics or maths based models) and discrete domain models, communicating via accurate network models, enables a generalization of the usual model-based design methodology. The use of individual notations appropriate for sensor, actuator, plant, controller and accurate network modeling, enable both the natural...
Emergency medical system is one of the main elements in city infrastructure. The article contains analysis of existing system of ambulance resource distribution. Paper considers the idea of using multiperiodicity as a tool to increase the efficiency of the Emergency Medical Services. Comparation of different number of sub-periods to evaluate an optimal quantity of them.
This paper presents a graphical description model for an urban electric minibus using energetic macroscopic representation. Considering a real case study of Coimbra's electric minibus, an energetic macroscopic representation model of the electric minibus was developed, including its control layer and strategy structure. An accurate model is demanded to perform energetic studies to manage the accelerated...
It is noticeable that most of VANETs communications tests are assessed through simulation. In a majority of simulation results, the physical layer is often affected by an apparent lack of realism. Therefore, vehicular channel model has become a critical issue in the field of intelligent transport systems (ITS). To overcome the lack of realism problem, a more robust channel model is needed to reflect...
The common sliding mode direct yaw moment control schemes for electric vehicles possess fixed controller parameters. In this paper, a new sliding mode direct yaw moment control scheme with two adaptive controller parameters is proposed, in order to enhance the system robustness against uncertainties and disturbances. A simple two-degree-of-freedom bicycle model is used for controller design, and a...
Recent advances in automotive technology are focused on topics about e-mobility as well as integrating information and communication technologies (ICT). Newly developed vehicle concepts possess a large diversification regarding powertrain configurations, e.g., in hybrid or battery powered electric vehicles. For those vehicles, which are equipped with complex energy storage technology, a control algorithm...
In this paper, a novel application of a soft sensor via Neural Networks is proposed. One of the most critical issues in the car is the area where the tires are in contact with the ground, these are the only points of contact between the vehicle and the road. The importance lies in the fact that keeping the tire contact patch within the operational parameters ensures the safety, comfort and maneuverability...
This paper shows the simulation results of a mathematical model of an autonomous underwater vehicle (AUV), represented by its kinematic and dynamic models, tracking an helical path at a depth of 4–10 meters. The vehicle used for the design of the controller is presented as a platform with six degrees of freedom, which is composed of six propulsion systems. The design of the H∞ controller is obtained...
We describe the development of a predictive model for vehicle journey time on highways. Accurate travel time prediction is an important problem since it enables planning of cost effective vehicle routes and departure times, with the aim of saving time and fuel while reducing pollution. The main information source used is data from roadside double inductive loop sensors which measure vehicle speed,...
Vehicular networks will significantly enhance traffic safety and management thanks to the wireless exchange of messages between vehicles and between vehicles and infrastructure nodes. Vehicular networks will make use of the IEEE 802.11p technology in the 5.9GHz frequency band. Simulation studies are generally utilized to analyze the performance of vehicular communications and networking protocols...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.