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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。
The kinematics model of spacecraft Positioning System (PMSG) based on the meshing transmission of ball and pinion gears was established and the kinematics characteristics were studied. The PMSG own kinematics model and satellite kinematics model are established respectively. Based on this, the kinematic model of PMSG is established. Combined with the characteristics of inter-satellite communication, the kinematics characteristics of PMSG are simulated with two medium-range satellites. The simulation results verify the theoretical model established in this paper, and get the law of PMSG pointing and the law of motor running, and establish the theoretical basis for PMSG inter-satellite communication process. The conclusion of the study provides a theoretical basis for the engineering application of SAPMSG and has certain reference value for related application fields.