发汗冷却控制模型边界热流密度的辨识方法

对发汗冷却控制系统的边界热流密度的辨识方法进行了讨论 ;根据实际热层内点温度观测 ,建立了最小二乘指标泛函 ,从理论上证明了最小二乘可辨识性 ;应用最小二乘法及最佳摄动理论 ,给出了基于实际的适时点观测 ,确定了气动加热面边界热流密度的迭代算法。数据试验显示 ,无论是对边界热流的稳衡状态还是热流变化较快 ,此方法都是十分有效的。

A Method to Identify Boundary Heating Flux for Transpiration Cooling Control Model

In this paper, a identification of boundary heating flux for transpiration cooling control system is discussed. The method for determining surface heating flux of reentry aerodynamic heating is given. The output least-square identifiability is proved. The numerical simulation shows that the method is efficient whether the surface heating flux is stable or changing fast.;