汽车ABS性能分析检测仪的毕业设计.doc

摘 要 本文首先介绍了汽车制动防抱系统(ABS)的历史和发展趋势，并对ABS的工作原理和控制方法进行了阐述和分析．以ABS模拟演示系统为实验平台，以LabVIEW软件编程为手段对ABS的工作过程进行模拟演示和研究。本文研究的主要内容包括： 1)从ABS的工作原理出发，结合ABS的基本结构研究了ABS的工作过程。 2)分析和研究ABS的控制方法，进一步深入研究ABS的最佳滑移率。 3)设计研究制作ABS试验台硬件系统，包括动力机械传动部分以及数据采集硬件系统。 4)设计制作ABS试验台的软件系统，开发研究基于虚拟仪器的ABS试验台数据采集和分析系统软件。 5)通过实时试验台ABS不同工况下的对比试验，检测分析汽车制动过程的参数和波形，进行试验数据的分析，深入研究ABS的工作过程和机理。ABS试验台系统是本文的研究重点，其中动力传动部分成功模拟了实车制动过程机械结构设计上具有创新性。软件程序用LabVIEW软件编写，由数据采集与分析模块和制动距离测量模 块等组成，可动态测试和分析车速、制动减速度、制动距离、滑移率等重要参数，为客观评价和分析ABS系统性能提供了科学的依据。通过实车制动试验数据和实验台制动试验的数据对比， 证明该实验系统能较好地模拟实车的制动过程，达到了设计的要求。为今后ABS的进一步研究 提供了可靠的实验和验证平台。 关键词：汽车制动防抱系统(ABS)，虚拟仪器，数据采集和分析 ABSTRACT This paper firstly introduced the history and trend of Anti-Lock Brake system(ABS) of car and had a deeply research and analysis on the working principle and control methods of ABS．The working process of ABS is simulated demonstrated and researched by using the ABS simulated demonstrate system as experiment platform and by means of LabVIEW program．The main content of the paper includes： 1）Based on the principle of ABS and combined with its basic structure，the working process of ABS is studied． 2）The control methods of ABS are analyzed and the optimized slippage ratio is deeply researched． 3） The hardware system of ABS braking bench is designed and researched．It consists of dynamic and mechanical transmission and data gathering hardware system． 4) The software system of ABS braking bench is designed and researched．The software of data gathering and analyze system based on virtual instrument is developed and studied． 5)Through the comparison test on the real-time braking bench at different working conditions，the parameter, wave and experiment data is analyzed and the working process and mechanism of ABS is also deeply researched． ABS braking bench system is the emphasis of this paper．The dynamic transmission simulates the brake process of actual car and the mechanical structure design is an innovation．The software program written by La