机载二次电源自动测试系统设计与研究

发布时间：2018-07-29 13:39

【摘要】：二次电源的功能是将主电源电能转换为另一种或多种形式的电能。伴随着航空技术日新月异的迅猛发展,航空电子化程度越来越高,二次电源作为飞行器供电系统的重要组成部分,扮演着越来越重要的角色,其性能的优劣将会直接影响到飞行器的技术性能和安全运行,故对二次电源性能测试显得尤为重要。目前,二次电源的测试工作大多采用了手动测试,而这种工作方式程序繁琐、效率极低,测试结果受人为因素的影响较大。因此,为了解决上述问题,根据实际需求,本文设计了一套机载二次电源自动测试系统。该测试系统主要应用于二次电源输出端参数的自动化测试。全文以某飞行器二次电源的测试参数为研究对象,参考国内外相关的电源测试标准,结合了虚拟仪器技术和数字处理技术,提出了一套完整的二次电源测试系统方案。系统能够完成二次电源输出端11路输出的参数测试,围绕以主控计算机作为上位机和MSP430作为下位机为核心的混合式数据采集系统,详细论述了硬件系统和软件系统的总体设计。全文采取了模块化思想,为了实现硬件功能,对控制电路、通信接口电路、11路负载电路等逐次进行了方案论证。另外,软件系统作为整体的灵魂也进行了深入的探讨和研究,设计总体流程,上位机采用了图形化编辑语言LabVIEW;下位机采用了MSP430芯片,应用C语言进行编程,实现数据的采集和处理。同时,根据生产过程中的实际需要,设计了一款专用测试柜,完成了对所有的硬件整机组装。最后搭建实验平台,完成了软硬件整机联调。实验数据和对比结果证明,基于虚拟仪器的自动测试系统与传统的手动测试相比,具备可靠性高的同时,可以大大提高检测效率及自动化程度,市场应用前景广阔。
[Abstract]:The function of the secondary power supply is to convert the main power supply into another or more forms of electrical energy. With the rapid development of aviation technology, the degree of aviation electronization is becoming higher and higher. As an important part of the aircraft power supply system, secondary power supply plays a more and more important role. Its performance will directly affect the technical performance and safe operation of the aircraft, so it is particularly important to test the performance of secondary power supply. At present, manual testing is mostly used in the test of secondary power supply, but the working procedure is tedious, the efficiency is extremely low, and the test results are greatly influenced by human factors. Therefore, in order to solve the above problem, an airborne secondary power automatic test system is designed according to the actual demand. The system is mainly applied to the automatic test of output parameters of secondary power supply. Taking the test parameters of secondary power supply of a certain aircraft as the research object and referring to the domestic and foreign relevant power test standards and combining the virtual instrument technology and digital processing technology, a set of complete secondary power supply test system scheme is put forward in this paper. The system can test the output parameters of 11 channels at the output end of the secondary power supply. The design of the hardware system and the software system is discussed in detail around the hybrid data acquisition system with the host computer as the host computer and the MSP430 as the lower computer. In order to realize the hardware function, the control circuit and the communication interface circuit are demonstrated one by one. In addition, the software system as the soul of the whole has also been deeply discussed and studied, and the overall process has been designed. The upper computer has adopted the graphical editing language LabVIEW, the lower computer has adopted the MSP430 chip, and the C language has been used for programming. Data collection and processing are realized. At the same time, according to the actual needs of the production process, a special test cabinet is designed to complete the assembly of all hardware. At last, the experiment platform is built, and the hardware and software are connected with each other. The experimental data and comparative results show that compared with the traditional manual test, the automatic test system based on virtual instrument has high reliability and can greatly improve the detection efficiency and automation degree, and has a broad market application prospect.
【学位授予单位】：西京学院
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V242.2

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