And they must learn to control the various vibrations that arise in electrodynamic tether systems.

他们也必须学习控制电动缆索系统出现的各类震动。

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Electrodynamic tethers with low thrust-to-weight ratios can only perform orbital transfers over a large number of revolutions, which poses a real challenge to short time scale optimal control methods.

电动力绳系卫星的推力幅值较小且方向固定，完成轨道机动任务的周期长，其最优控制问题的求解比较困难。

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The control system comprises the electrodynamic type cryogenic fluid expansion valve, the programmable controller, the temperature transmitter and the like.

本发明由电 动式低温流体膨胀阀、可编程控制器、温度传感器等组成。

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The control unit ends up in a lower orbit, but it can then use solar power and the electrodynamic properties of the tether to return to its original orbit.

ECONOMIST: Spaceflight on a shoestring | The