The near-space hypersonic aerodynamic glider has strong maneuverability in wide flight envelope. The glide is generally achieved in a smooth manner with no or weak altitude oscillations in the altitude. The maximum lift-to-drag ratio glide is a typical trajectory that can approximate the maximum glide range, which is a crucial indicator for a glider. However, another important indicator, the minimum glide range, which is used in some time-sensitive missions and is expected to reduce the velocity to a specified threshold in a short longitudinal range, is difficult to be realized. In practice, the excessive velocity or energy is usually dissipated during lateral manipulation, wherein either the entire glide range or the glide time is not shortened. An innovative guidance strategy is proposed for achieving the minimum glide range based on a typical maximum glide scheme and bang-bang control scheme only on the longitudinal plane, and the flight time can be reduced considerably. Then, a practical extended state observer based pitch control is utilized to efficiently track the bang-bang command within a wide velocity envelope to achieve the guidance objective. Extensive simulation results demonstrate the effectiveness of the proposed methods.

中文翻译：

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独立纵向平面上近空间滑翔机的实际耗能控制

近空间高超音速气动滑翔机在宽飞行范围内具有很强的机动性。滑行通常以平稳的方式实现，在高度上没有或没有弱的高度振荡。最大升阻比滑行是典型的轨迹，可以接近最大滑行范围，这是滑行机的关键指标。然而，很难实现另一个重要的指标，即最小滑行距离，它在一些对时间敏感的任务中使用，并有望在短的纵向范围内将速度降低到指定的阈值。在实践中，过大的速度或能量通常在侧向操纵过程中消散，其中整个滑行范围或滑行时间都不会缩短。提出了一种创新的制导策略，以基于典型的最大滑行方案和仅在纵向平面上的爆炸控制方案来实现最小滑行范围，并且可以大大减少飞行时间。然后，基于实用的扩展状态观察者的俯仰控制被用来有效地跟踪宽速度包络线内的爆炸命令，以达到制导目标。大量的仿真结果证明了所提方法的有效性。