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基于AVR32 的小型磁航向系统设计

杜海龙a,张召悦b,徐晓旭a   

  1. (taptap下载安装安卓a.工程技术训练中心;b. 空中交通管理研究基地,天津300300)
  • 收稿日期:2013-03-21 修回日期:2013-04-27 出版日期:2013-10-15 发布日期:2013-10-08
  • 作者简介:杜海龙(1984—),男,山东潍坊人,助教,硕士,研究方向为航空电子.无线电技术.

Design of small magnetic heading system (MHS)based on AVR32

DU Hai-longa,ZHANG Zhao-yueb,XU Xiao-xua   

  1. (a. Engineering Techniques Training Center;b. Air Traffic Management Research Base,CAUC,Tianjin 300300,China)
  • Received:2013-03-21 Revised:2013-04-27 Online:2013-10-15 Published:2013-10-08

摘要:

现有的磁航向测量系统体积、重量、功耗偏大,并且调试、误差补偿算法复杂、整体费用偏高,针对这些问题,设计了一个在小角度俯仰、滚转情况下的小型磁航向测量系统。该系统采用带DSP 指令的32 位高速处理芯片AVR32 UC3B0256、新型倾角传感器SCA100T以及磁阻传感器HMC1022 构成数字化解算平台,实现
了误差补偿。实验数据显示,在水平状态下,磁航向测量值最大误差为±1.4;当俯仰角低于30°或滚转角低于35°时,随着角度的增加,磁航向输出误差变化不大,最大误差分别为3.7°和2.8°;当俯仰角超过30°或滚转角超过35°时,磁航向输出误差会急速增大。结果表明,该系统在小角度俯仰、滚转情况下具有较准确的磁航向角解算能力。

关键词: 磁航向系统, AVR32, 数字化解算平台, 误差补偿

Abstract:

In the case of small angle pitch and roll,a small magnetic heading measurement system is designed to solve the problems of large volume and weight,high power consumption,complex of error compensation algorithm and high price in the existing magnetic heading measurement system. The system makes the error compensation come ture by using constitute digital solvable platform,which consists of 32 bit high-speed processing chip with DSP instructions(AVR32UC3B0256),a new inclination sensor(SCA100T)and a solidstate magnetic sensor (HMC1022). The experimental data show that the maximum error value of the magnetic heading measurement is ±1.4 in the level of the state when pitch angle is less than 30°or roll angle is less than 35°,the magnetic heading output error changes very little as the angle increases the maximum error are 3.7°and 2.8°respectively;when pitch angle exceeds 30°,or roll angle exceeds 35°,the magnetic headingoutput error increases rapidly. The results show that the system is capable to calculate magnetic heading angle more accurately in the case of small angle pitch and roll.

Key words: magnetic heading system, AVR32, digital solvable platform, error compensation

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