基于球齿轮传动的星载天线定位机构星间通信运动学研究

Kinematics of the Satellite Antenna Positioning Mechanism Based on Spherical Gears in Star Internal Communication

建立了基于球齿轮齿盘啮合传动的星载天线定位机构(PMSG)在星间通信过程中的运动学模型,研究了其运动学特性。分别建立PMSG自身运动学模型和卫星运动学模型,在此基础上建立星载PMSG的运动学模型。结合星间通信特点,以两颗中轨卫星为例对PMSG的运动学特性进行了仿真研究。仿真结果验证了文中建立的理论模型,得到了PMSG指向变化规律、电机运行规律,为PMSG的星间通信过程建立了理论基础。研究结论为SAPMSG的工程应用提供了理论依据,并对相关应用领域具有一定的参考价值。

A satellite antenna positioning mechanism based on spherical gear（PMSG） was presented,and its kinematics character was also researched.The kinematics model of PMSG itself and a satellite were established separately,and the PMSG kinematics model was established based on the kinematics models.Considering the characters of intersatellite communication,the kinematics characters of two middle orbit satellites were simulated and researched for example.Results of the simulation verified the theory model established above,and the direction rule and motors movement rule were acquired,which were the theory basis in intersatellite communication.Conclusions acquired can be the basis of the engineering applies of PMSG,and it can be beneficial to the other correlative applications.