Reaction fly-wheel is the implementary element of the poser control system of the space vehicle.The control system of servo motor plays an important role in spacecraft attitude.

• 摘要反作用飞轮是航天空间飞行器姿态控制系统的执行机构，其驱动电动机伺服系统性能优劣对飞行器的姿态有至关重要的作用。