ARCSIM Vehicle Dynamics Simulation Software.doc

ARCSIM Vehicle Dynamics Simulation Software ARCSIM车辆动态仿真软件A software package called ArcSim has been developed by the Automotive Research Center to demonstrate simulation technologies.汽车研究中心研发了ARCSIM软件程序包，它是一种演示仿真技术。Summary 摘要ArcSim is a free set of integrated computer tools for simulating and analyzing the braking and handling of a 6-axle tractor-semitrailer. ArcSim一种免费的综合性的计算机应用软件，它用于模拟和分析6轴式半挂车的制动性和操纵性。The software runs under Windows 9x and Windows NT. It contains a fully functional vehicle dynamics simulation program that can simulate responses to arbitrary (user-defined) steering and braking inputs, on flat or inclined ground surfaces. 该软件在Windows 9x 和Windows NT系统下运行。它包含了一个功能全面的车辆动力学模拟程序，这个程序可以模拟车辆在平坦的或倾斜的路面上任意的（用户定义的）转向和制动输入。It also includes a plotter and animator for visualizing outputs, and a preloaded database of vehicle descriptions, control inputs, and simulation runs.它还包括一个可视化的输出绘图仪和动画，以及车辆的描述，预装控制输入数据库，并模拟运行。The database initiated in ArcSim contains parameters for a preset combination: the M916A1 6-wheel driver tractor and the M870A2 3-axle semitrailer. 在ArcSim发起的数据库包含一个预设的组合参数：M916A1 6轮驱动拖拉机和M870A2 3轴半挂车。The simulation models are parametric. Therefore, you can add new parameters to the built-in database as needed to represent any vehicle made of a 3-axle tractor towing a 3-axle semitrailer. 仿真模型参数。因此，您可以添加新的参数，内置的数据库，根据需要为代表的3轴拖着一个3轴半挂牵引车作出任何车辆。In addition, the ArcSim database includes output files for runs made off-line with research computer programs. All outputs, whether made off-line or made with the included model, can be viewed with the built-in animator and plotter.此外，ArcSim数据库包括输出文件运行了“离线与科研计算机程序”。所有输出，作出是否脱机或与包括模型制造，可以被视为具有内置的动画和绘图仪。Although ArcSim has capabilities for switching between models, parameter sets and inputs, the current version contains a single baseline simulation program, derived from the TruckSim software developed at UMTRI and sold commercially by Mechanical Simulation Corporation. 虽然ArcSim已切换模式，参数设置和投入能力，当前版本包含一个基线仿真程序，在UMTRI从软件开发的TruckSim所得和出售机械模拟公司商业化As new models are developed, they can be added to the package by using an exiting menu command. 随着新车型的开发，它们可以被添加到该程序包使用一个现有菜单命令。Features 特点CarSimEd is a complete simulation package, built on the Simulation Graphical User Interface developed at UMTRI in the early 1990s. CarSimEd是一个完整的仿真包，在模拟的图形用户界面开发兴建UMTRI在90年代初。It includes three separate simulation programs that are integrated through a common graphical interface, plotter, and animator. The most notable feature of the overall software design is its ease of use. 它包括三个独立的模拟方案，通过一个共同的图形界面，绘图仪集成，动画师。在整个软件设计中最显着的特点是它的易用性。Other features are: o Nonlinear 3D mathematical model with 91 state variables. o 非线性三维数学模型91状态变量。o Full nonlinear tire model. o 全部非线性轮胎模型。o Solid-axle suspensions. o 实心轴悬挂o Major suspension effects, including a new formulation of the UMTRI spring model. o 主要悬浮的影响，包括对UMTRI弹簧模型的新提法o Detailed steering system model with major compliance effects. o 详细指导作用的重大遵守系统模型o User-specified tire/ground friction, grade, and cross-slope. o 用户指定的轮胎/地面摩擦，级别，和横破跨度o Point-and-click simulation graphical user interface and database. o Point-and-click模拟的图形用户界面和数据库。o Includes general-purpose Engineering Plotter (EP). o 包括通用工程绘图仪(EP)o Includes general-purpose Wire-Frame Animator. o 包括通用线框动画。Research Results研究结果 Besides being a fully functional simulation environment, ArcSim is a container for research results produced in the ARC. 除了是一个全功能的仿真环境，ArcSim是一个“容器中的ARC产生的研究成果”o Worst Case Inputs. ArcSim is set up to let you rapidly switch between different steering and braking inputs. But how do you determine the worst case inputs? Game theory is applied to create a scenario generator, based on mobility evaluation metrics for worst-case analysis. Combined steering and braking inputs, included in the ArcSim database, cause spectacular vehicle rollover. o Power Train Interactions with Vehicle Dynamics. A research code called PowerSim uses Simulink to integrate an engine model, a drive-line model, and the vehicle dynamics model from ArcSim. The simulation shows interactions between the load transfer that occurs when a vehicle accelerates up a hill, the spinning of wheels (cause the load transfer), and the transfer of torque through the drive line, due to the spinning wheels. o Proper Models. The baseline ArcSim model includes 91 state variables, over two-hundred parameters, and many tables. Are all of them necessary? By examining the power flow in the model components, alternative models that are simpler but still capture the dynamics of interest can be determined. The systematic approach is called a proper model generating algorithm. Getting ArcSim System Requirements ItemMinimumRecommendedCPU80386Pentium Pro/AMD K6Co-ProcessorRequired for 386 or 486SXOperating SystemWindows 9x or NT.RAM8 MB16 MB or moreHard Disk Space15 MB20 MB or moreDownload and Installation To download and install the software, do the following. 1. Create a folder on your hard drive to contain the compressed installation files. 2. Download the self-extracting archive file arcsim1.exe (7.34 MB) to the folder you just created. 3. Run the executable file (arcsim.exe). Extract all of the files into the folder you created. 4. Delete the file arcsim.exe. 5. Start the installer program setup.exe. 6. When prompted, select Full Installation. When the program asks if you want to create a Program Manager group, answer Yes. The installation files are not used by ArcSim, and can be deleted from your hard drive after installation.Documentation You can download the complete reference manual for ArcSim (arcman.pdf 1.73 MB) along with its table of contents (arctoc.pdf 6.62K). The manual is in Adobe Acrobats Portable Document File (pdf) format which can be read by the Adobe Acrobat Reader. For information about Adobe Acrobat Reader, including free access to the reader software, visit Adobes web site: Steps to Downloading the Free Acrobat Reader.R