研究平流层卫星系绳轨迹建模分析可靠性问题,根据平流层卫星所用系绳的特性,要求高强度和足够的侧向控制力.为此提出了“质量集中-轻质钢杆”模型,并给出模型的求解过程.模型考虑了系绳自身质量及所受气动力,通过迭代计算,可求出系绳形状及系绳张力的变化.在给定轨迹控制器的高度及平衡轨迹控制器所需的拉力大小和方向后,计算出系绳传递到气球的拉力大小及方向,绘制出了系绳的形状.仿真结果表明,“质量集中-轻质钢杆”模型能够符合系绳在风场和自身重力作用下的传递的拉力和自身动态特性,为平流层卫星系绳系统优化设计提供了参考.%The modeling of stratospheric satellite tether and the reliability of the model were studied in this paper. According to the features of the tether used by the stratospheric satellite system, it requires high strength and sufficient lateral control. Therefor, the model of " mass - centralize and lightweight - rigid - pole" was proposed, and the solution process of the model was given too. The model considers the aerodynamic of the tether and its mass. By iterative calculation, the figure of the tether and its tension were deduced. When the height of the trajectory controller and the tension to equilibrium the trajectory controller were given, the tension passed through the tether to the balloon was calculated, and the curve of the tether was drawn. Simulation results show that the " mass - centralize and lightweight - rigid - pole" model can accord with the tension passed through the tether and its dynamic characteristic curve under the specific atmosphere and gravity field, which provides a reference for the optimized design of the stratospheric satellite tether system.
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