基于LabVIEW的卫星磁测试数据采集系统

发布时间：2018-06-19 11:04

本文选题：航天器磁测试 + LabVIEW　；参考：《北华航天工业学院》2017年硕士论文

【摘要】：本课题基于LabVIEW和虚拟仪器技术,结合计算器系统的数据处理能力研制了一套磁测试数据采集与处理系统,并将磁测试结果显示在计算机上。磁测试数据采集系统是一种通过测量卫星等航天器周围磁场实现航天器磁矩测试的一种测试系统,在进行测试时通过转动转台测得航天器各角度的磁场值,并对采集到的多个传感器的数据进行反演计算得到航天器三个轴向的磁矩值。该系统结合了国内主要的磁测试方式,不仅能实现地磁环境下实现航天器剩磁、感磁测试还能够满足小型航天器及单机部件的特殊要求实现零磁环境下的剩磁测试。系统分硬件和软件两部分,硬件部分采用了NI成熟的硬件数据采集方案和自带信号调理电路的高精度磁通门传感器以满足快速开发、轻量化、小型化的要求;软件部分采用LabVIEW模块化编程思想,按照一字型测试、L型测试和零磁测试三种测试模式实现测试系统界面的控制、数据采集与数据处理,完成地磁环境下的剩磁和感磁测试以及零磁环境下的剩磁测试。经测试,该系统能够达到1%的测试精度,稳定性可达0.5nT/4h,地磁环境下的环境波动控制可达1nT,具有良好的测试性能,能够满足现阶段航天器对磁测试设备的应用要求。
[Abstract]:Based on LabVIEW and virtual instrument technology, a magnetic test data acquisition and processing system is developed in combination with the data processing ability of computer system, and the magnetic test results are displayed on the computer. The magnetic testing data acquisition system is a kind of testing system that can measure the magnetic moment of spacecraft by measuring the magnetic field around the satellite and other spacecraft. The magnetic field of each angle of the spacecraft is measured by rotating turntable during the test. The three axial magnetic moments of the spacecraft are obtained by inversion of the collected data of multiple sensors. The system not only realizes the residual magnetism of spacecraft in geomagnetic environment, but also can meet the special requirements of small spacecraft and single machine components to realize the residual magnetic test in zero magnetic environment. The system is divided into two parts: hardware and software. The hardware part adopts NI mature hardware data acquisition scheme and high precision fluxgate sensor with signal conditioning circuit to meet the requirements of rapid development, lightweight and miniaturization. In the software part, LabVIEW modular programming idea is used to realize the interface control, data acquisition and data processing of the test system according to the three test modes of one font test L type test and zero magnetic test. The remanence and inductance measurements in geomagnetic environment and the remanent magnetic test in zero magnetic environment are completed. The test results show that the system can achieve 1% testing accuracy, the stability can reach 0.5 NT / 4 h, and the environmental fluctuation control under geomagnetic environment can reach 1 NT. The system has good testing performance and can meet the requirements of the application of spacecraft to magnetic testing equipment at present.
【学位授予单位】：北华航天工业学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP274.2

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