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首页> 外文会议>AIAA Guidance, Navigation and Control Conference Pt.2, Aug 1-3, 1994, Scottsdale, AZ >Flight Dynamics and Control of Elastic Hypersonic Vehicles -Modeling Uncertainties
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Flight Dynamics and Control of Elastic Hypersonic Vehicles -Modeling Uncertainties

机译：高超音速飞行器的飞行动力学和控制-建模不确定性

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摘要

It has been shown previously that hypersonic air-breathing aircraft exhibit strong aeroelastic/ aeropropulsive dynamic interactions. To investigate these interactions, especially from the perspective of the vehicle dynamics and control, analytical expressions for key stability derivatives were derived, and analysis of the dynamics performed. In this paper we will report on extensions to the original system-dynamic model, and include additional airframe/engine coupling previously neglected. A brief analysis of the new system's dynamics will be presented, along with the description of a previously developed baseline multivariable control law. Finally, a method for assessing the magnitude and the significance of modeling uncertainty will then be discussed, along with the results of such an analysis for this highly interactive vehicular system. It will be shown that the methods suggested in the literature for analyzing the robustness of multivariable feedback systems can be difficult to apply on real atmospheric flight vehicles.
机译：先前已经证明，高超音速呼吸飞机表现出强的气动弹性/气动推进动力相互作用。为了研究这些相互作用，特别是从车辆动力学和控制的角度，得出了关键稳定性导数的分析表达式，并进行了动力学分析。在本文中，我们将报告对原始系统动力学模型的扩展，并包括以前忽略的其他机身/发动机耦合。将对新系统的动力学进行简要分析，并对先前开发的基线多变量控制定律进行描述。最后，将讨论一种评估建模不确定性的大小和重要性的方法，以及对该高度互动的车辆系统进行这种分析的结果。结果表明，文献中提出的用于分析多变量反馈系统的鲁棒性的方法可能难以应用于实际的大气飞行器。

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