【作者】 祝明锦；

【导师】 熊继军； 张高飞；

【作者基本信息】 中北大学 ， 精密仪器及机械， 2010， 硕士

【摘要】 近半个世纪,航天技术在世界范围内取得突飞猛进的发展,随着微纳米技术的不断革新,微小卫星正成为各航天大国的关注焦点。本论文中的反作用轮是NS-2卫星姿态控制系统(ADCS)执行机构的关键部件,约重420g。NS-2卫星采用三轴姿态稳定技术,在三轴各安置一轮,并在转速临近饱和时以磁力距器进行卸载,使得反作用轮转速恢复到规定范围,确保姿态稳定。本文主要研究反作用轮机械结构尤其是轮体的设计以及控制系统软硬件的设计。主其要内容为：1)优化飞轮轮体结构,使轮体在体积小的同时,实现尽可能大的惯量/质量比,并对壳体进行设计。2)设计了基于单片机和电机专用控制器的反作用轮控制系统,实现了稳定可靠,占用空间少,成本低的要求。3)进行了反作用轮控制电路测试试验,测试结果满足预期的设计要求。更多还原

【Abstract】 In half a century, as the development of Micro/Nano-technology, Micro/Nano-satellite is focused on by the main space countries. The reaction wheel is a very important part of ADCS in NS-2 Satellite. The NS-2 is a micro-satellite in 20Kg, and the three-axis attitude stabilization system is used in this satellite. In this satellite, Three reaction wheels are mounted respectively along three orthogonal axes.. When the speed of RW is above saturation, a Magnetorquer is used to uninstall the RW until the speed of wheel is in the nominal range, to ensure the attitude of satellite stability. The design of the mechanical structure, the circuit and software of the control system on the RW. The details are as follows.1) To achieve the most inertia/mass ratio and the minor size of the RW, the Shell of the RW is designed and the size of the flywheel is optimized.2) the control system based on the SCM and the special control chip of BLDC(Brushless DC motor) is designed. The system included hardware and software, fulfils the requirements of cheap, small size and reliable operation3) The test of the designed control system is completed, and the test data is analyzed. The results meet the requirement of the technical specifications.更多还原