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Performance of sideslip perching maneuver with an adaptive gain control feature

机译：具有自适应增益控制功能的侧滑栖息操纵性能

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The avian-inspired sideslip perching maneuver is an aggressive flight scenario that involves high turn rates and high rates of change of aerodynamic angles to decelerate and descend the aircraft rapidly for a precision landing. The occurrence of aerodynamic stall delay is unpredictable. Besides dynamic stall effects, state perturbations and model uncertainties heavily influence the accuracy of the landing and evidently, the success of the maneuver. This paper seeks to extend the convergence area related to the initial perching launch points and enhance the stability of the sideslip perching maneuver by formulating an adaptive gain sliding mode control technique. Based on a reference optimal sideslip trajectory generated by an optimization model, a comparative study between the proposed adaptive controller and a nominal sliding mode controller is carried out to evaluate their performances under different scenarios such as varying initial spatial and state conditions with induced state perturbations along the perching maneuver and dynamic stall uncertainties. (C) 2018 Elsevier Masson SAS. All rights reserved.
机译：鸟类启发的侧滑栖息操纵是一种激进的飞行场景，涉及高转弯率和空气动力学角度的高变化率，以使飞机快速减速和下降以进行精确着陆。空气动力学失速延迟的发生是不可预测的。除了动态失速影响外，状态扰动和模型不确定性还会严重影响着陆的准确性，并且显然会影响机动的成功。本文试图通过制定一种自适应增益滑模控制技术，来扩大与初始栖息地发射点有关的收敛区域，并提高侧滑栖息地操纵的稳定性。基于优化模型产生的参考最佳侧滑轨迹，对所提出的自适应控制器和标称滑模控制器进行了比较研究，以评估它们在不同情况下的性能，例如，随着初始空间和状态条件的变化而引起的状态扰动栖息机动和动态失速不确定性。 （C）2018 Elsevier Masson SAS。版权所有。

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