摘要
针对小卫星半实物仿真系统的技术需求,提出了一种太阳敏感器电模拟器设计实现方法;模拟器以FPGA作为控制核心,采用压控电流源实现了0-1式太阳敏感器、模拟式太阳敏感器的输出电流模拟;通过专用电流源芯片REF200实现了数字式太阳敏感器输出电流模拟;模拟器由计算机通过RS-485接口控制,既能模拟太阳敏感器正常工作时的电信号输出,也能模拟太阳敏感器出现故障时的电信号输出;该太阳敏感器电模拟器已应用于小卫星的半实物仿真,其电流精度可达±1μA。
To fulfill the needs of semi--physical simulation for small satellite, a design is provided to achieve a sun sensor electric simulator. The FPGA is adopted as control unit, the voltage controlled eurrent source is applied to simulate the current output of 0-1sun sensor and analog sun sensor; the ehip REF200 is applied to simulate the current output of digital sun sensor. The simulator is controlled by computer through the RS-485 interfaee, and it can simulate the current output of sun sensor in normal mode and fault mode. The simulator has been applied in the semi--physical simulation for small satellite, its current accuracy is ± 1μA.
出处
《计算机测量与控制》
CSCD
北大核心
2011年第8期2019-2021,2032,共4页
Computer Measurement &Control
基金
哈尔滨工业大学优秀青年教师培养计划资助(HITQN-JS.2009.028)
关键词
太阳敏感器
电模拟器
电流源
小卫星
sun sensor
electric simulator
current source
small satellite
