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Design of dynamic dissipative compensators for flexible space structures

机译：柔性空间结构的动态耗散补偿器设计

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摘要

Control system design is considered for attitude control and vibration suppression of flexible space structures. The problem addressed is that of controlling both the zero-frequency rigid-body modes and the elastic modes. Model-based compensators, which employ observers tuned to the plant parameters, are first investigated. Such compensators are shown to generally exhibit high sensitivity to the knowledge of the parameters, especially the elastic mode frequencies. To overcome this problem, a class of dynamic dissipative compensators is next proposed which robustly stabilize the plant in the presence of unmodeled dynamics and parametric uncertainties. An analytical proof of robust stability is given, and a method of implementing the controller as a strictly proper compensator is described. Methods of designing such controllers to obtain optimal performance and robust stability are presented. Numerical and experimental results of application of the methods are presented, which indicate that dynamic dissipative controllers can simultaneously provide excellent performance and robustness.
机译：控制系统设计被考虑用于挠性空间结构的姿态控制和振动抑制。解决的问题是同时控制零频刚体模式和弹性模式。首先对基于模型的补偿器进行了研究，该补偿器采用了观察员调整到的工厂参数。示出了这样的补偿器通常对参数，尤其是弹性模频率的知识表现出高灵敏度。为了克服这个问题，接下来提出一类动态耗散补偿器，该补偿器在存在未建模的动力学和参数不确定性的情况下能够稳定地稳定工厂。给出了鲁棒稳定性的分析证明，并描述了将控制器实现为严格适当的补偿器的方法。提出了设计此类控制器以获得最佳性能和鲁棒稳定性的方法。给出了该方法应用的数值和实验结果，表明动态耗散控制器可以同时提供出色的性能和鲁棒性。

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