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This paper presents a micro-simulation approach on improving the capacity analysis of an urban signalized intersection impacted by median bus lanes with midblock stop. Four factors that influence the capacity are analyzed. Based on the data from a traffic survey, VISSIM simulation is used to analyze the relationship between capacity influencing factors and the capacity. The Capacity Reduction Factor...
Steer-by-wire is such a technology that replaces the traditional mechanical and hydraulic control systems by electronic control systems. As the next generation automotive network communications protocol, FlexRay meets the future demands of steer-by-wire network. This paper builds the co-simulation model of steer-by-wire and FlexRay bus on the basis of CANoe_MATLAB, which combines the advantages of...
When ADAMS carries on the kinematics dynamic simulation analysis, the entity modelling, the increase restraint, the infliction driving influence, the movement simulation and so on, several steps should be carried on. If achieve a number of different actions step by step during simulation, sometimes need to select the appropriate function. This paper puts forward the research of using Max, min function...
Using three-dimensional finite element to analyze the bridge structure, the article use OpenGL to research bridge three-dimensional modeling and render realistic graphics. Based on this, we develop bridge structure dynamic simulation system. Take a large bridge engineering for example, and combined with the actual usage situation, we simulate and analyze the following several aspects: traffic flow...
We discuss the need for taking the environmental impact as a primary metric for evaluating the quality of algorithms for Intelligent Transportation Systems (ITS). In many studies, the travel time, or its minimization, has been used to demonstrate the advantages of Inter-Vehicle Communication (IVC) solutions combined with dynamic rerouting. Such evaluations are frequently based on simulation experiments...
Using a new multi-body simulation software SIMPACK as platform, a whole mini-car model is built, and a PID controller with time-delay transfer function is adopted to set up the driver control model. A closed-loop simulation of severe double-lane change test is carried out. And according to the human-vehicle-road closed-loop maneuverability evaluation, the handling stability of the model is graded...
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...
IIM CAS is now working on simulation platform for driverless vehicle to test some functions of driverless vehicle. The overall architecture of this system is presented and the key components are illustrated briefly. In virtual scene, its intelligent behavior is emphasized and the intelligent virtual traffic environment framework is given out. In the light of the difference of creditability analysis...
In this study, a simulation based regression analysis for rack configuration of an autonomous vehicle storage and retrieval system (AVS/RS) is presented. We develop a mathematical function for rack configuration of an AVS/RS that reflects the relationship between the output (response) and the input variables (factors) of the system. In the regression model, the output is the average cycle time for...
This paper studied the characteristics of bus serving process, explored the way passengers cognize and perceive the bus service, as well as their response to information conditions. A multi agent based model was proposed for the purpose of simulating bus serving process and estimating performance of single-route bus service, which is described by an introduction of the simulation platform, SimCUBE...
This research aims at the bus holding strategies for the simulation of mass rapid transit (MRT) transferring system in a terminal station with platform constraints for bus in the metropolitan area. We developed and evaluated the transfer system through computer simulation models for MRT with bus system that the goals of bus holding strategies in the model were: reduce bus waiting time, reduce passengers...
In this paper, with dynamics analysis on whole vehicle and hydraulic retarder, the dynamic simulation model of engine and hydraulic retarder continual braking on sloping hillside of tracked vehicle is built by using Simulink software. The simulation results show that when engine and hydraulic retarder continual braking is used opportunely, it can meet the demands for tracked vehicles to safely travel...
Pedestrian movement behavior can be analyzed in different ways. One of the most common approaches for this subject is the cellular automata. However, the pedestrian behavior is usually modeled by a reactive-response framework. Also, the pedestrians are treated as just numbers or elements in a grid. This paper proposes a basic framework for a multi-agent pedestrian movement model. Applying the same...
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...
Based on the coupling of PC-Crash and embedded MADYMO, influence laws of pedestrian??s head WAD involved in a vehicle/pedestrian collision are analyzed by modeling vehicle/pedestrian multi-body system and selecting main factors influencing on pedestrian??s head contact location on vehicle body surface as independent variables for simulation tests. Various influencing factors and laws of pedestrian...
Based on the coupling of PC-Crash and embedded MADYMO, the multi-body system models of vehicle and pedestrian involved in a vehicle/pedestrian collision are established and validated. Main factors influencing on pedestrian kinematics in vehicle/pedestrian contacting phase are extensively analyzed; furthermore, the simulation test scheme is constructed from these factors. The kinematics laws of pedestrian...
Highway intersections play great important roles in the well-being of the whole highway system. Inappropriate control of highway intersections usually leads to poor performance, which causes traffic accidents and congestions. Although there are many factors affecting intersection performance, traffic volumes and compositions are by far the most important factors. Besides, they are impossible to be...
This paper discusses a simulation and modeling package developed at Wuhan University of Technology, HEV Simulator (HEVSIM). HEVSIM was written in the Matlab/Simulink graphical simulation language and is portable to most computer platforms. First, comparisons are made for three different hybrid electric topologies according to their power assembly, power-train, control strategies and drive cycles....
The CAN bus which has been widely used in electric vehicle control system have many characteristics such as high transmission efficiency, high reliability, good real-time feature and so on. The CANoe which is the product of German company vector is a practical and powerful tool for system design and analysis. Firstly, a design scheme of simulation and test system for vehicle body CAN bus network is...
The 802.11p protocol, also known as wireless access for the vehicular environment (WAVE), has recently gained momentum in the area of research and development. The WAVE protocol provides enhancements to the physical (PHY) and medium access control (MAC) layers of the existing 802.11 wireless standards. These enhancements are required to support the intelligent transportation systems (ITS) initiatives...
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