L1 Adaptive Control Augmentation for the Longitudinal Dynamics of a Hypersonic Glider

${\mathcal{L}}_{1}$ adaptive control augmentation for a six-degree-of-freedom hypersonic vehicle model

“…其中的每一元素作为相应气动参数的比例系数, 基准值为 1 并且符合正态分布, 各元素的 3σ 范围在 表 2 中已给出. 在仿真试验中, 上述气动参数的基准值分别乘以相应的比例系数以模拟气动参数的不 确定性 [17] .…”

L 1 adaptive control of a generic hypersonic vehicle model with a blended pneumatic and thrust vectoring control strategy

“…This section presents the L 1 adaptive control methodology employed to develop the controllers. The philosophy behind the controllers is that the nonlinearities are treated as bounded uncertain perturbations, and the L 1 adaptive control technique is utilized to obtain a state feedback controller that estimates the uncertainties, as well as compensating for the uncertainties within the bandwidth of a predesigned low-pass filter [31]. A conceptual block diagram of the control scheme is provided in Figure 2.…”

“…The robustness of the controller was verified through various failure modes and modelling error simulations. In [31], the descent longitudinal trajectory control problem was studied by Banerjee et al where the L 1 adaptive controller was augmented to a dynamic pole placement controller to cancel out the matched uncertainties, and an enhancement to the control performance was proved by the simulations.…”

Adaptive Command Filtered Integrated Guidance and Control for Hypersonic Vehicle with Magnitude, Rate and Bandwidth Constraints

“…Several scenarios including degradation of control surface efficiency, reduced longitudinal stability margins and controller processing delays are simulated without controller reconfiguration to test the robustness. In [25][26][27][28], it mainly addresses the application of L1 adaptive control in IGC design for hypersonic glider. A dynamics pole placement controller is implemented as the baseline controller, and it is augmented with an L1 adaptive controller to cancel out the matched and unmatched uncertainties.…”