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Service reliability is one of the main measures of performance determining transit system level of service. Holding control strategies are a common transit operations practice aimed to reduce transit service unreliability by setting criteria for departure from time point stops. In order to adequately analyze the sources of uncertainty involved with transit performance, it is essential to model dynamically...
In the automotive industry an integrated set of manufacturing engineering activities lie on the critical path of the Vehicle Development Process (VDP). After the product integration design is finalized, the Production Tool Design and Build (PTDB) processes becomes the VDP critical path. It is in the PTDB where virtual launch and validation activities are performed. To increase throughput of the engineering...
The fast growth of complexity of modern cars, motorbikes and commercial vehicles continues. Although the number of applied Electronic Control Units (ECUs) decreases, they have to fulfill more and more functions concerning performance, comfort and safety. The electric and electronic architecture (EEA) of a vehicle forms the basis for those features and functionalities. An elaborated and evaluated EEA...
This paper proposes a field application of a high-level Reinforcement Learning (RL) control system for solving the action selection problem of an autonomous robot in a cable tracking task. The underwater vehicle ICTINEUAUV learns to perform a visual based cable tracking task in a two step learning process. First, a policy is computed by means of simulation where a hydrodynamic model of the vehicle...
Microscopic traffic simulation is an effective way to analyze the feature and behavior of transportation systems. However performing microscopic simulations for large-scale networks remains a huge computing problem. Intensive computation characteristics displayed in traffic simulation can benefit from parallel, distributed processing. Based on simplified models, a MPI based distributed parallel traffic...
This paper discusses simulation of the vehicle schedule with time windows. The simulation model is developed in AnyLogic simulation environment. A short overview of AnyLogic structure and scope is provided. A detailed description of a conceptual model with focus on input and output data is given. The structure of the simulation model and operation of its main blocks are described. Each vehicle is...
A real-time simulator for vehicle-to-vehicle (V2V) communication scenarios with a new integration method for the wireless network simulator NS-2 and the vehicular and traffic simulator (VATSIM) is introduced. Vehicular micro traffic networks with multiple intersections and vehicles using 802.11p communication are simulated and a collision warning system including a driver response model is investigated...
The multi-mission Dshell++ simulation framework has formed the basis for high-performance, physics-based simulations for a large variety of space mission simulations including cruise and orbiter spacecraft, Entry, Descent, Landing (EDL) missions as well as for planetary surface rovers. The Dspace interactive, reusable 3D visualization system has been developed to support the diverse visualization...
Adapting the CZ series launch vehicle as research object, and according to multi-scale Modeling, the simulation model of the Launch Vehicle guidance subsystem was established and simulated in Matlab/Simulink. A series of relatively independent mathematical model such as rocket instantaneous velocity, instantaneous displacement, earth gravity acceleration, navigation guidance equation etc were built...
Based on the CZ series launch vehicle as research object, focused on the mathematical model of guidance calculating subsystem of launch vehicle, the simulation model of the subsystem is established in Matlab/Simulink. The subsystem is divided into a series of independent functional units, such as error compensation unit, space-borne computer unit, calculation guidance unit etc. Firstly, models for...
With the increase in the number of motor vehicles, according to the traffic capacity problem in our country now days, 3DS MAX is used in the field of traffic simulation. This paper takes single intersection as a subject of research. Firstly, the car model, single intersection, lane and so on are created with 3DS MAX. Then, the simulation of cars that are passing the single intersection is realized...
Shipping transfer is important mode in transportation. A real shipping transfer problem is put forward. A method for modeling, simulation and optimization of shipping transfer system (STS) are studied. The SIMPROCESS is efficient integrated development environment for developing regional (intercity) transportation simulation system (RTSS).
The trend over the past decade in computer science and computer engineering curricula has been to use computer graphics as a junior- or senior-level elective course focusing on 3-D graphics and data visualization. Alternatively, it is possible to develop a computer graphics course that can address core curricular needs beyond its obvious topical and algorithmic scope. The development of an interactive...
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