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HDVs rollovers cost hundreds of million dollars every year, the risk of having dead people in accidents involving HDVs is multiplied by 2.4 in comparison to the same risk computed for accidents involving light vehicles. Wind has been shown to be an important factor that must be considered when investigating HDVs rollover. In order to address these concerns, this research built an aerodynamic and vehicle...
Paper is focused on dynamic stress of planetary transmission elements. This dynamic stress of the main parts of the planetary transmission depends on an external load of the transmission mechanism. Mathematics simulations and modeling are utilized for this analysis. Created mathematic model takes into account inner mechanical couplings of the gearbox. Spectrums of the load of the each transmission...
Cargo transportation is one of the most important topics in today's fast growing and globalized logistics sector. Ecommerce activities make valuable contributions to cargo and logistics sectors. In this study, technological transfer center of a cargo company in Turkey that consists of infeeds, outfeeds, reject line and a sorter system was considered. The main problem is the imbalance between the expected...
Mathematic and simulation modeling is for an analysis, modeling and prediction of stochastic phenomena in the operation, maintenance, logistics, risk assessment very favorable, first of all for a possibility of monitoring through graphic outputs, which give more visual perception about stochastic processes.
Hardware-in-loop (HiL) simulation focuses on testing of Electronic Control Units (ECU) in virtual real time environment in order to scrutinize the behavior of controller under test. Use of HiL simulation in development process reduces time and cost involved in verification and validation of the ECU's development. Generally, HiL systems developed using dSPACE®, National Instruments® and other platforms...
This paper examines an integrated path planning and power management problem for a solar-powered unmanned ground vehicle (UGV). The proposed method seeks to minimize the travel time of the UGV through an area with a known energy density by designing an optimal path and allocating the vehicle's power among its electrical components, while the UGV operates under strict power constraints and harvests...
Mixed-model assembly lines have been widely used to satisfy the ever-increasing variety of customer requirements. However, the successful application of this production model greatly relies on the level of inventory management, which determines the efficiency and operating cost. Considering the flexibility to unexpected events, this paper proposes a dynamic part supply method to deliver the required...
This paper presents modelling of a 2-axle railway vehicle using two different simulation packages and compares simulation results of the two models. A simplified model of the railway vehicle is developed in ‘Matlab/Simulink’ environment and a full model is obtained by building/connecting blocks using a multi-body simulation package called ‘Simpack’. The simulation results of the two models are presented,...
In this note, the tracking trajectory problem for a wheeled mobile base has been solved using the robot dynamical model. The proposed solution is based on sliding mode control. The asymptotic vanishing of the tracking errors has been theoretically proved, and simulation results have been reported, showing the effectiveness of the proposed control law.
Vehicle to grid technologies (V2G) utilize the batteries in electric vehicles (EV) to provide ancillary services to the electric power grid. In order to maintain a 60-hertz frequency in the electric grid, there exists a wholesale market for frequency regulation (FR), a specific type of ancillary service. This paper examines V2G technology for providing FR, while focusing on the effect FR service has...
To improve the handover performance of network mobility basic support (NEMO-BS), several schemes have been developed. However, these schemes are designed for a single vehicle and hence may incur significant signaling overhead in the vehicular networks (VNs). Therefore, we propose an bulk fast handover scheme to mitigate such signaling overhead. Simulation results show that the proposed scheme significantly...
Named Data Networking (NDN) is a data-centric architecture designed for the future Internet. Existing works show that NDN brings significant performance improvement for typical content-centric applications, and can also fit the mobile environment well. However, directly applying NDN to Vehicular Ad hoc NETworks (VANETs) is confronted with great challenges due to the high mobility of vehicles. Most...
In this paper, we present a control method based on nonlinear constrained optimization combined with singular perturbation theory, to deal with the problem for a vehicle to brake in a corner with stability. The control laws are elaborated from a simple horizontal model and are shown to be very robust to unmodeled dynamics (such as the vertical dynamics of the car and the suspensions).
In this paper, we investigate the performance of HWMP, OLSR and DD protocols in a VANET crossroad scenario. The mobility patterns of vehicles are generated by means of SUMO (Simulation of Urban Mobility) and as communication protocol simulator is used NS3 (Network Simulator 3). For the simulations, we used IEEE 802.11p standard, Two Ray Ground Propagation Loss Model and sent multiple CBR flows over...
The vehicle parking system is designed to prevent usual problems associated with the parking. This system is designed to solve the problem of locating empty parking slot, congestion and indiscriminate parking. The system has been designed using VHDL and successfully implemented on CPLD (family-MAX V,Device-5M1270ZT144C5, Board-Krypton v1.2). A complete design and layout was drawn out and suitably...
Context: Continuous Improvement in manufacturing to attain manufacturing excellence is today's requirement. It gives cutting edge over the competitors. This has developed lot of interest for the researchers during the last few years. Vehicle Assembly Line being the most complex Assembly line has been active area of research over years and has attracted many researchers.
Hydraulic excavators play an important role for various construction tasks. But due to increasing costs of fossil fuels and an increasing environmental awareness, there is high demand for more efficient machinery. During the development of the necessary technologies, simulations based on an excavator model and measured driving cycles allow for an early assessment of the expected machine performance...
Many complex systems of theoretical and practical interest can be modeled as hybrid systems, i.e., systems that exhibit both continuous and discrete dynamics. This work focuses on the explicit predictive control of hybrid systems using two free Matlab/Simulink toolboxes designed specifically to synthesize and simulate controllers for this kind of systems. A case study is considered. The system is...
The popularity of electric vehicles (EVs) provides great help to solve the increasingly serious energy issues and environmental problems, but it also has limitation such as short driving range and long charging time. This paper proposed an optimization strategy for EVs to travel more efficiently called planed ordered charging (POC for short), that is, spending more time on driving and necessary charging...
We have developed the robotic vehicle on water that moves by the rider's balance. Previously, due to the lack of stability of the vehicle, balancing skill was required for the rider. In general, the center of buoyancy of the floating body influences on the stability. Therefore, in this paper, the floating vehicle was modeled and the appropriate body shape and size that improves the stability was simulated...
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