【作者】 张巍；

【导师】 过学迅；

【作者基本信息】 武汉理工大学 ， 车辆工程， 2013， 硕士

【摘要】 目前越来越多的商用车,包括多轴商用车,开始用盘式制动器取代鼓式制动器,而目前国内外的ABS硬件在环仿真平台多为乘用车液压制动系统或者气压鼓式制动系统设计。为了将ABS硬件在环仿真平台这样一种对于ABS开发与检测起着至关重要作用的工具更多的应用于现代或将来的商用车ABS开发与检测的过程中,有必要专为盘式气压制动系统的ABS设计一款硬件在环仿真试验平台。这样可以避免实车试验中场地或天气状况等因素的限制,同时可以大大降低试验成本,还可以应用ABS硬件在环仿真试验平台进行ABS快速原型的开发,这样也可降低ABS的开发成本并提高开发效率。在研究的初始阶段,本文首先进行了ABS原理的研究,在此基础之上通过Simulink进行了ABS仿真模型的建立。介绍了详细的子系统模型,包括车辆系统模型、制动系统模型、车轮模型、轮胎地面模型、ABS电磁阀模型、ABS的ECU模型以及为将来研究TSC及ESP引入的转向系统模型和发动机传动系统模型等,并对离线仿真的结果进行了介绍分析。本文所述的商用车ABS硬件在环仿真测试系统在模型上具有良好的拓展性能,可以增加模块至多轴商用车的仿真测试,同时若将整车模型进一步完善至集成车辆纵向、侧向及横摆方向运动特性的模型,则该平台可被用于ESP系统的仿真测试。在完成建立离线模型的工作之后,本文就硬件在环仿真试验平台进行了总体规划,介绍了该平台的工作原理及组成部分,即实时系统和实物系统,其中实时系统包括模型软件模块与ETAS硬件模块。重点介绍了ETAS系统的硬件在环工具,其中包括硬件板卡以及LabCar实时仿真系统等,LabCar系统是一套专为硬件在环仿真测试的系统,其图形化的操作界面能够极大程度的方便用户与如板卡等硬件成分的交互,同时能够有效的使数据在模型与硬件之间构成实时仿真的通信,该系统有自己独有的建模系统,同时也能实现兼容Simulink模型。之后本文介绍了几组测试结果的轮速曲线,并逐一对其进行了分析。在完成硬件在环系统的设计之后,为了明确仿真测试的目的,为升级改进硬件在环仿真的事系统的功能与性能,本文引入ABS的相关评价法规。可以将相关法规嵌入ABS的硬件在环仿真测试平台之中,将得出的测试结果直接进行法规分析,得出评价结果。更多还原

【Abstract】 Disc brakes are recently substituting drum brakes in more and more commercial vehicles including multiple-axle commercial vehicles. However hardware in the loop simulation platforms are usually designed for passenger cars or drum brake systems, so to use the platforms which are very essential for the development and test of ABS in the process of development and test of commercial vehicles, it’s necessary to design a hardware in the loop platform for disc pneumatic brake system. Testing on the platform would make the test unrestricted by the experimental venues and the weather. This would also cut the test cost at a large extend. The platform could also be used for the development of rapid prototype and improve the efficiency of developing ABS.At the beginning of the research, the ABS simulation model has been built based on the research of ABS principle. The model includes submodels such as vehicle system model, brake system model, wheel model, tire-road model, ABS solenoid valve model, ECU model and steering system model, powertrain model which are used for further study of TCS and ESP. The analysis of results of simulation has been presented. And the model shown in this dissertation has strong ability of expansion. It’s easy to add some models to realize the simulation of multiple-axle commercial vehicle. And if integrating the longitude, lateral and yaw dynamic models of vehicles, the platform could be used for ESP simulation test.After the work of building off-line model, the dissertation made a general plan for hardware in the loop simulation platform, and introduced its working principle and components. This platform includes two parts called real-time system and physical system. The real-time system has model software module and ETAS hardware module. The physical system is mainly the brake system. The ETAS hardware in the loop simulation tool is the highlights. It has board and LabCar real-time simulation system. The LabCar is a system that is specially designed for hardware in the loop simulation. The graphical user interface is convenient for the communication between users and the simulation system. The system provides efficient communication between the model and hardware. It has its own model building system and also is compatible with Simulink model.To clear the target of simulation, the ABS evaluation legislation has been introduced. The legislation can be installed in the simulation system then users can make the regulatory analysis to results of simulation.更多还原