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Dynamic Features of Flexible Spacecraft Control in Process of Its Transformation into a Large Space Structure

机译：挠性航天器控制转化为大空间结构过程中的动态特性

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Consideration was given to dynamics of angular motion control of the flexible spacecraft reconstructed into a large space structure. In formal terms, this transformation lies in gradual reduction of the constructive rigidity to small values giving rise to low-frequency (f{top}～ ≤ 0.05 Hz) oscillations which represent one of the attributes of the class of large space structures. The existing quantitative definition of the large space structure was specified. It was demonstrated that as the frequencies of structure's elastic oscillations approach those of the control of object "rigid" motion, a new kind of interrelations between the motions of both types, the so-called "capture" of the controller frequency by that of the elastic oscillations, arises which impairs control efficiency to the point of losing system stability. Analytical (for the linear control systems) and computer-aided (for the discrete systems) methods for determination of the boundaries separating the two qualitatively different forms of existence of the transformed elastic object were proposed. Some results of computer simulation of the orientation control of variable objects such as flexible spacecraft and large space structure were presented.
机译：考虑了重构为大型空间结构的挠性航天器的角运动控制动力学。从形式上讲，这种转变在于将结构刚度逐渐减小到较小的值，从而引起低频（f {top}〜≤0.05 Hz）振荡，这代表了大型空间结构类别的属性之一。指定了大空间结构的现有定量定义。结果表明，随着结构的弹性振动频率接近对象“刚性”运动的控制频率，两种类型的运动之间出现了一种新的相互关系，即所谓的“捕获”控制器频率。会产生弹性振荡，这会损害控制效率，甚至失去系统稳定性。提出了分析方法（用于线性控制系统）和计算机辅助方法（用于离散系统），用于确定将两种定性不同形式的已转换弹性物体存在的边界分开的边界。给出了对诸如挠性航天器和大空间结构之类的可变物体的定向控制进行计算机仿真的一些结果。

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