飞机电源系统供电参数测试与分析研究

【作者】 来文洁；

【导师】 范蟠果；

【作者基本信息】 西北工业大学 ， 电力电子与电力传动， 2003， 硕士

【摘要】 飞机电源系统是飞机机载设备的重要组成部分之一，包括交流电源系统和直流电源系统。本论文以飞机电源系统的性能参数测试方法为研究对象，以GJB-181-86和HB6448-86为测试标准，以数值分析与信号处理为主要处理方法，系统地研究了稳态参数和瞬态参数分析处理的理论和方法，同时设计出了一套供电参数测试系统。 本测试系统能够完成Y-7、Y-8、J8Ⅱ、JH7等机型电源系统参数的测试。其核心单元采用计算机数据采集处理系统，硬件采用数据采集卡，软件应用虚拟仪器的思想、采用面向对象的程序设计方法。该系统能对产品的各项参数进行数据处理，处理结果能够保存、打印输出，测试内容包括电压、电流、功率因数、相位差、电压不平衡值、频率；电压波形分析；电压调制分析；频率调制分析；过压、欠压浪涌；频率瞬变；保护器时间测试等参数。并针对参数测量的要求设计了相应的算法，编制了配套的软件。如应用最小二乘线性拟合法得到信号的真实过零点；应用抛物插值求最值；应用傅立叶变换进行频谱分析。最后对测试结果及存在的问题进行了分析。 经实际运行表明，该系统运行可靠，测试准确，软件界面友好、使用方便，达到了工程的技术要求。更多还原

【Abstract】 Aircraft electric power source system (AEPSS) is an important part of aircraft equipment. AEPSS includes AC-AEPSS and DC-AEPSS. The main research object of this paper is the parameters of AEPSS, and the main methods of treating with these parameters are numerical value analyse and signal process. According to GJB-181-86 and HB6448-86, the paper researches the theories and methods of analyzing steady and dynamic parameters. At the same time, a system of testing power parameters is offered.The system can test parameters of several kinds of aircrafts, such as Y7,Y8,J8 II ,JH7. The core unit is data acquisition card. The system can test steady parameters (voltage, current, frequency, powerfactor, etc.) and dynamic parameters (surge voltage, instantaneous frequency, etc.). For AC discrete digital signal, the linear fit method is applied to calculate the real zero in the periodic signal. Parabola interpolation is used to measure extremum and the discrete Fourier transform (DFT) is used for the measurement of voltage spectrum.An advanced software package is programmed on the basis of these methods and theories. In the end the author analyse the testing results and put forward some opinions on the problems.The programming results show that the algorithm, which is used in the measuring and controlling system of AEPSS, is effective and credible. All the tested parameters of AEPSS meet basic requirements and the measuring software performs greatly.更多还原