基于FPGA小型化数传中继天线驱动控制设计
|
摘要
为满足航天器小型化设计需求,采用单片反熔丝FPGA作为中继天线驱动控制主控芯片。为达到天线指向机构的高精度要求,采用双通道旋转变压器配合AD2S80解码获得位置数据。为提高机构速度稳定度,采用步进电机256细分正弦斩波驱动方式。实现集通信、位置电流采集、故障报错机制及步进电机驱动功能于一体,单机重量从5～6 kg降到2.5 kg,指向精度提高到0.005 5。实验结果表明基于单片FPGA的数传中继天线驱动控制能有效提高单机集成度和运动过程平稳度,对于卫星综合性能的提高具有重要意义与应用价值。
In order to meet the requirements of spacecraft miniaturization design, a single chip anti-fuse FPGA is used as main control chip for driving relay antenna. In order to meet the high precision requirements of antenna pointing, dual-channel rotary transformer with AD2S80 decoding is used to obtain position information data. In order to improve the speed stability of the mechanism, the stepper motor 256 subdivision sinusoidal PWM drive mode is adopted. Communication, position, current acquisition, fault error mechanism and stepper motor drive function are set in one, drive machine weight is reduced from 5 ～ 6 kg to 2. 5 kg, and pointing accuracy increases to 5. 5 degrees per thousand. The experimental results show that the drive control of digital relay antenna based on single chip FPGA can effectively improve the integration of machine and the smoothness of motion process, and also has great significance and application value to the improvement of satellite comprehensive performance.
In order to meet the requirements of spacecraft miniaturization design, a single chip anti-fuse FPGA is used as main control chip for driving relay antenna. In order to meet the high precision requirements of antenna pointing, dual-channel rotary transformer with AD2S80 decoding is used to obtain position information data. In order to improve the speed stability of the mechanism, the stepper motor 256 subdivision sinusoidal PWM drive mode is adopted. Communication, position, current acquisition, fault error mechanism and stepper motor drive function are set in one, drive machine weight is reduced from 5 ～ 6 kg to 2. 5 kg, and pointing accuracy increases to 5. 5 degrees per thousand. The experimental results show that the drive control of digital relay antenna based on single chip FPGA can effectively improve the integration of machine and the smoothness of motion process, and also has great significance and application value to the improvement of satellite comprehensive performance.
引文
[1]崔赪,王典军.跟踪与数据中继卫星星间链路天线驱动机构计数综述[J].空间控制技术与应用,2010,36(5):32-37.
[2]徐大林,廖良闯,高文政,等.双通道多极旋转变压器-数字转换器的设计与实现[J].微特电机,2010(1):27-29
[3]郑立,卢刚,李声晋.基于AD2S80的双路RDC测角系统及接口设计[J].微特电机,2009(8):12-14.
[4]刘超,侯超,葛悦,等.基于AD2S80A和FPGA的双通道旋转变压器测角系统设计[C].2016年航天元器件专题论坛论文集,2016:340-344.
[2]徐大林,廖良闯,高文政,等.双通道多极旋转变压器-数字转换器的设计与实现[J].微特电机,2010(1):27-29
[3]郑立,卢刚,李声晋.基于AD2S80的双路RDC测角系统及接口设计[J].微特电机,2009(8):12-14.
[4]刘超,侯超,葛悦,等.基于AD2S80A和FPGA的双通道旋转变压器测角系统设计[C].2016年航天元器件专题论坛论文集,2016:340-344.