【作者】 王树辉；

【导师】 刘志刚；

【作者基本信息】 北京交通大学 ， 电力电子与电力传动， 2008， 硕士

【摘要】 100%低地板车代表了国际低地板轻轨车的最先进技术,牵引传动与控制系统是100%低地板轨道交通系统的关键技术之一,为了使车辆在线调试过程安全、方便,用传感器加网络的方式取代原有的测量工具势在必行;另一方面,虚拟仪器技术发展非常迅速,成为当今测试领域应用和研究的重要方向之一。本文设计了以DSP和FPGA为核心,以太网和现场总线相结合的底层网络传输系统和处理器在线烧写系统,同时开发了基于LabVIEW和VC++的调试软件和虚拟示波器。本文的底层网络包括RS422、CAN和以太网,应用FPGA扩展串行通信的接口,实现DSP程序远程烧写;应用DSP扩展CAN总线和以太网的接口,分别用于牵引系统和辅助系统、牵引系统和上位机之间的数据通信。本文在上层应用LabVIEW开发网络调试软件,实时显示变流器的状态数据,故障时发出警报,并在此基础上增加了其它针对用户的功能。另外本文针对LabVIEW软件的不足,应用VC++开发了虚拟示波器,显示变流器参数的波形,并开发了通用示波器中计算、触发等必需的功能。本文将网络传输技术和虚拟仪器技术相结合,实现了牵引控制系统处理器远程在线烧写,底层数据的实时采集和传输,上层软件的实时显示,为车辆在线调试提供了方便并节约了成本。更多还原

【Abstract】 100% low-floor light rail vehicle (LRV) represents the most advanced technique of low-floor LRV in the word. Traction driver and its control system is one of the pivotal techniques in this area. In order to make it safe and convenient to debug the vehicle on line, it is necessary that sensors and network replace normal measuring tools. On the other hand, the technique of virtual instruments develops very quickly. And it has been one of the most important directions in modern measuring areas.In this paper, network transmission and DSP programming loading system, which combines Ethernet with field bus, is designed. And the core of the board is DSP and FPGA. Besides that, the software for debugging based on LabVIEW and VC++ is developed on the computer.The network in the paper includes RS422, CAN and Ethernet. FPGA is used for serial communicating to realize long distance programming loading for DSPs. The interfaces of CAN-bus and Ethernet extended by DSP are used to communicating between traction system and auxiliary system, traction system and the computer.The paper develops the debugging software by LabVIEW in the upper layer. It can display the data of inverter’s status, alarm when faults happen. And it provides users some other functions to make it convenient to operate. Moreover, a virtual oscillograph is developed to describe the waves of inverter’s parameters. Besides the describing function, it has other necessary functions which are provided by normal oscillograph. This paper combines network transmission technique with virtual instruments technique. And the processors of traction control system can be programming in long distance. The data of inverter can be real-time collected, transmitted and displayed in the upper software. Because of that, the vehicle can be debugged conveniently. Moreover, the cost is much lower.更多还原