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Output stabilization of flexible spacecraft with active vibration suppression

机译:具有主动振动抑制功能的挠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:在此解决的问题是设计一种动态控制器,该控制器能够通过使用姿态测量来对挠性航天器执行从静止到静止的操纵。该控制器不需要模态变量和航天器角速度的知识。没有这些变量的测量值时,可通过控制器的适当动态来补偿,控制器会提供它们的估计值。李雅普诺夫技术被应用于该动态控制器的设计中。在实际情况下,受控系统不稳定的可能原因是柔韧性对刚性运动的影响,对结构的干扰的存在以及参数的变化。为了减弱其影响并消除影响航天器姿态的不希望的振动,使用了分布式压电致动器。实际上,在存在干扰和/或参数变化的情况下,所提出的控制器确保了控制问题的近似解决方案。

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