Papers by Keyword: Vehicle

Abstract: In this paper the authors present the results of theoretical and experimental research in order to optimize suspension rigidity in case of Daewoo Nubira vehicle. The paper presents the mathematical model obtained by assimilating car with a dynamic system with 5 rigid solids with elastic and viscous linking between them. Theoretical results obtained based on this model and the experimental results are presented, and it is presented a solution to optimize suspension in order to remove the negative effects observed driving on gravel runways or damaged runaways. Theoretical results, compared with the experimental ones, allow us to say that it is possible to optimize suspension by analyzing specific parameters equivalent mathematical model.

Abstract: In this paper is presented a comparison between the obtained start-acceleration of a vehicle with wheels and one tracked. Experiments performed in this regard were conducted on three types of surfaces like parquet, carpet and sand. The vehicles chosen for testing were a remote-controlled mini-vehicle (wheeled locomotion system) and Spy Video TRAKR (locomotion system tracked). In order to determine the acceleration, the vehicles were equipped with ultrasonic sensor DT020-1 and data acquisition system MultiLogPRO, running connected to a PC or as a standalone device.

Abstract: This paper presents two new technologies in order to optimize the operation of a con-ventional spring-damper-system. Therefore, the function structure such as the energy flow of a con-ventional system is investigated and optimized. The first resulting technology is the fluid dynamicabsorber (FDA) which is still a passive solution and improves the energy flow of the conventionalspring-damper-system with the help of an absorber with a hydraulic transmission. The second tech-nology is the active air spring damper (AASD) which is an active variant of a spring-damper-systemand optimizes the energy flow by using electrical energy. We use a quarter car model to examine theperformance of our technologies and compare them in the conflict diagram where driving comfort vs.driving safety is shown within the scope of uncertainty. The FDA improves the driving safety at almostthe same comfort. The driving comfort is improved by using the AASD. We also examine the systembehavior at uncertain loads. The results show that they are capable of controlling this uncertainty.

Abstract: Researches are always thinking of a way to produce power to fuel due to the needs of the world today. In broad, green energy source such as thermal, hydroelectric, solar and wind turbine has become popular, but it does not limit to new idea generation of power. One of new discovery is the use of solar window, the manufacturing and cost of the panel is still in an early stage where the price of the panel is considered quite expensive. In this paper, the speed bump is used as a main component for power generation. Generally, for safety issues, the speed bump is put into an area where the vehicle needs to slow down. During this, a vehicle weight contact with the speed bump and therefore energy is created. This energy can be reused to power traffic light, light post or supply general electricity to a particular building. Basically, the concept of kinetic energy is discussed in general besides the design and development of a power generating speed bump. However, the efficiency and the durability are looked into consideration. In conclusion, the innovative design of the speed bump as a power generation seems to be promising, and it offers opportunities for new innovation power producing device on the road.

Abstract: Everyday the mankind consumes more and more energy, in this regard the stocks of traditional sources of this energy are decreased. Much attention has always been given to the problem of effective energy saving in transport. The environmental degradation is in parallel to the problem. The hybrid vehicle invention can be the solution of the problems given. The research considers the development and invention of the energy saving hybrid vehicle. The vehicle is driven by means of power station, the differential peculiarity of which is two energy sources usage and two types of engine, electric-powered and heat engine. In this paper the arrangements of combined and hybrid power stations for vehicles with heat-engines are developed. The key advantage of such vehicles is a fuel consumption reduction and the emission of harmful agents to the atmosphere.

Abstract: Environmental concerns, dependency on imported petroleum and lower cost alternative to gasoline always motivated policymakers worldwide to introduce electric vehicles in road transport system as a solution of those problems. The key issue in this system is recharging the electric vehicle batteries before they are exhausted. Thus, the charging station should be carefully located to make sure the vehicle users can access the charging station within its driving range. This paper therefore proposes a multi-objective optimization method for optimal placement of quick charging station. It intends to minimize the integrated cost of grid energy loss and travelling of vehicle to quick charging station. Due to contrary objectives, weighted sum method is assigned to generate reference Pareto optimal front and optimized the overture by genetic algorithm. The results show that the proposed method can find the optimal solution of quick charging station placement that can benefit electric vehicle users and power grid.

Abstract: — The aim of this study is to determine the spine muscle activities of the driver. The AnyBody software was used to simulate the human body movements during the drive and to determine the spine muscle activities. To validate the simulation result a temographical experiment was made to register the back muscle activities. The simulation and the termographical experiment proved to be useful tools to determine spine musculoskeletal affections among drivers, and also can be used in the human-based ergonomic design of the vehicle’s interior.

Abstract: As many countries increased investment on clean energy research and the automobile industry developed rapidly, fuel cell vehicles hold its own place in the history of the automobile industry gradually. By analyzing large car companies in proton exchange membrane fuel cell (PEMFC) car research and fuel cell car customer requirements, study the design and manufacture of fuel cell vehicles, give some countermeasures for design research.

Abstract: A control method is proposed to improve vehicle yaw stability based on neural network predictive. A vehicle steering model using neural network control strategy is set up, at the same time, the nonlinear predictive functional control using the neural network model is developed for control of high-nonlinear system. New structure of neural network multi-step prediction that is different from cascade or parallel is given. The results illustrate that the nonlinear predictive functional control using neural network model is more effective for control nonlinear system than PID control. A simulation is performed with it during two different conditions: step input and sinusoidal input, the results showed that compared with uncontrolled, the presented controller achieve good steady response of side slip angle and yaw rate, and lighten the burden of the driver and improve vehicle yaw stability.

Abstract: The chosen problems of selection the basic chassis for special purpose body are presented in the paper. The technical data of chassis have to go through various tests, most often within the proving ground tests. The paper contains the analysis of chosen tests and their usefulness in the design process of special purpose vehicle.