基于NI-RIO的车载电性能测试系统

发布时间：2018-09-08 11:46

【摘要】：汽车已经成为人们的日常用品。近年来其发展越来越向新能源车型靠拢,而电气系统在高级轿车和新能源汽车上比例高于传统车型。因此,电气系统研发是至关重要的环节。电气设备的增多和电控系统的不断完善使整车电气系统日益复杂,也对电气系统设计开发及测试验证提出更为严苛的要求。在整车电气系统的开发过程中,为确保设计的合理性、安全性及可靠性,需实施整车电性能测试,并建立拥有测试流程与规范指导的电性能测试系统。整车电性能测试是汽车电源系统性能测试、电子控制器测试以及电气部件测试的总称,对车辆的启动、制动、转向以及安全行驶至关重要。主要测试项包括整车电量平衡测试与整车电源分配测试。本文研发一种基于CompactRIO的车载电性能测试系统,根据整车电量平衡原理与电源分配原理,建立完善的测试规范,以模板化形式将测试规范导入测试系统,通过数据采集、数据处理与分析、生成报告等步骤完成测试任务。第一,通过车辆电子系统电路解析电源分配测试原理和整车电平衡计算原理,根据国际测试规范制作测试规范模板,获取测试需求。第二,详细阐述系统的整体结构设计,并且分模块阐述系统硬件设计,包括传感器模块,无线传输模块,数据采集模块,精度转换模块。第三,结合CompactRIO技术和虚拟仪器技术进行系统的软件设计,分上位机与下位机层次进行编程,主要体现在FPGA驱动设计,RT控制与数据存储,PC测试分析界面三个层面上。第四,选用纯电动汽车进行实车测试,得到整车电气性能测试报告,验证系统的科学性、可靠性。
[Abstract]:Cars have become people's daily necessities. In recent years, its development is closer to the new energy model, and the proportion of the electric system in the high class car and the new energy vehicle is higher than that in the traditional car. Therefore, the electric system research and development is the vital link. With the increase of electrical equipment and the improvement of electric control system, the electric system of the whole vehicle is becoming more and more complex, and the design, development and testing of the electrical system are also required to be more stringent. In order to ensure the rationality, safety and reliability of the whole vehicle electrical system, it is necessary to carry out the electric performance test of the whole vehicle, and to establish the electrical performance test system with the guidance of testing flow and specification. The whole vehicle electrical performance test is the automobile power system performance test, the electronic controller test and the electrical component test general term, is essential to the vehicle start up, the brake, the steering and the safe driving. The main test items include vehicle power balance test and vehicle power distribution test. In this paper, a vehicle electrical performance test system based on CompactRIO is developed. According to the principle of the balance of electric quantity of the whole vehicle and the principle of power distribution, a perfect test standard is established, and the test specification is imported into the test system in the form of template, and the data is collected. Data processing and analysis, report generation and other steps to complete the test task. Firstly, through analyzing the test principle of power distribution and the calculation principle of the whole vehicle electric balance, the test specification template is made according to the international test specification, and the test requirements are obtained. Secondly, the overall structure of the system is described in detail, and the hardware design of the system is described in detail, including sensor module, wireless transmission module, data acquisition module and precision conversion module. Thirdly, the software of the system is designed by combining CompactRIO technology and virtual instrument technology. It is programmed at the level of upper computer and lower computer, which is mainly reflected in three levels of FPGA driver design, RT control and data storage PC test and analysis interface. Fourthly, pure electric vehicle is selected for real vehicle test, and the electric performance test report of the whole vehicle is obtained to verify the scientific and reliability of the system.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.6

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