摘要
为验证通过调整卫星本体姿态而实现精确跟瞄的可行性,设计出基于单轴气浮转台,以反作用轮和精密轮为执行机构,CCD摄像机与DSP图像处理器为光学系统,以PID算法为跟踪控制器算法的跟瞄地面实验系统,提出了跟踪控制方案;并以一个典型工况为例,测试出了跟瞄实验系统的精度;实验结果表明,当摄像机距离目标2.5m,而目标视线以1mrad/s的速度转动时,跟瞄实验系统的跟踪误差小于0.051mrad,从而验证了通过调整卫星本体姿态实现精跟瞄的可行性。
To validating the possibility of precise tracking and pointing through adjusting satellite~ s gesture, a ground experiment sys- tem of tracking and pointing was designed. Its actor consists of reaction wheel and high precise wheel, and optical system consists of CCD vid- icon and image processor based on DSP. Its control algorithm is based on PID. A tracking control scheme was also proposed. It analyses a model in which the vidicon was 2. 5m apart from the target, and the angle velocity of line of sight was constantly lmrad. After the test, the result shows that the error of tracking was 0. 051mrad. It proves the possibility of precise tracking and pointing through adjusting satellitC s gesture.
出处
《计算机测量与控制》
CSCD
北大核心
2010年第3期626-628,共3页
Computer Measurement &Control
关键词
跟瞄
PID
地面实验系统
单轴气浮台
小卫星
tracking and pointing
PID
ground experiment system
single axis air bearing table
