A novel integrated guidance and control (IGC) scheme for a Re-entry Hypersonic Vehicle (RHV) is proposed with the capabilities of online aerodynamic coefficient estimation based on an Unscented Kalman Filter and online trajectory generation based on the Gaussian pseudospectral method. A linear quadratic regulator is adopted for trajectory tracking guidance and a second-layer sliding mode controller is designed for attitude control. The variation of lift and drag coefficients are modeled and estimated online, based on which a new trajectory can be generated. The commands of trajectory generation are set as moments of actuators and their extremums pose more constraints on the rate and acceleration of flow angles. Comprehensive simulations are conducted and comparable IGC performances with normal conditions are obtained under large aerodynamic coefficient errors according to online generated trajectory, which proves the effectiveness and advantages of the proposed IGC scheme.

中文翻译：

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具有在线空气动力系数估计和弹道生成能力的RHV新型IGC方案

提出了一种新的重入超音速飞行器（RHV）的集成制导与控制（IGC）方案，该方案具有基于无味卡尔曼滤波器的在线空气动力学系数估计和基于高斯伪谱方法的在线轨迹生成的功能。轨迹跟踪制导采用线性二次调节器，姿态控制采用第二层滑模控制器。在线对升力和阻力系数的变化进行建模和估算，基于此可以生成新的轨迹。轨迹生成的命令设置为执行器的力矩，并且其极值对流角的速率和加速度施加更多约束。