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Output stabilization of flexible spacecraft with active vibration suppression

机译:具有主动振动抑制的柔性航天器的输出稳定

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Addressed here is the problem of designing a dynamic controller capable of performing rest-to-rest maneuvers for flexible spacecraft, by using attitude measures. This controller does not need the knowledge of modal variables and spacecraft angular velocity. The absence of measurements of these variables is compensated by appropriate dynamics of the controller, which supplies their estimates. The Lyapunov technique is applied in the design of this dynamic controller. Possible source of instability of the controlled system in real cases are the influence of the flexibility on the rigid motion, the presence of disturbances acting on the structure, and parameter variations. In order to attenuate their effects and to damp out undesirable vibrations affecting the spacecraft attitude, distributed piezoelectric actuators are used. In fact, in presence of disturbances and/or parameter variation the proposed controller ensures an approximate solution of the control problem.
机译:这里解决了设计动态控制器的问题,该动态控制器能够通过使用姿态措施对柔性航天器进行休息室休息的操作。该控制器不需要模态变量和航天器角速度的知识。通过对控制器的适当动态进行补偿,缺乏这些变量的测量,其提供了它们的估计。 Lyapunov技术应用于该动态控制器的设计。在实际情况下,受控系统的可能不稳定性源是对刚性运动的灵活性的影响,存在作用在结构上的干扰,以及参数变化。为了衰减它们的效果并抑制影响航天器姿态的不希望的振动,使用分布式压电致动器。实际上,在干扰和/或参数变型存在下,所提出的控制器确保了控制问题的近似解。

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