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The control performance of hypersonic vehicle (HSV) is highly impacted by uncertainty parameters or exterior condition random variables. Taking all possible uncertainty changes into consideration often results in the conservativeness in control design. In fact, many parameters changes meet a certain probability distribution in most cases. This article focuses on analysis the effects of those uncertain...
Image Fusion and Mosaic is one of important technologies for image processing. Its objective is to mix many of images with overlapping each other into one image. In this paper, Image Fusion and Mosaic is applied to handle many moon landform image from Chang'E-1 satallite data. An moon landform image fusion and mosaic method base SIFT is proposed. Firstly, moon image information from Chang'E-1 Satelliate...
To the highly nonlinear, significant input-output coupling and remarkable external disturbance of near space vehicle (NSV), a dynamic inversion control method based on H∞ optimal control is proposed. This method combines the robustness of H∞ optimal control theory and nonlinear decoupled control ability of the dynamic inversion control well, so it is possible to achieve highly nonlinear decoupled...
An adaptive back-stepping controller is designed and analyzed for the longitudinal dynamics of a generic Near Space Vehicle. This vehicle model is nonlinear, multivariable, and unstable including uncertain parameters. Back-stepping approaches utilize Lyapunov theory to guarantee stability of the closed system and the methods are inherently recursive. Simulation studies are conducted to demonstrate...
A model validation approach based on residuals analysis is presented to uncertain system with unmodelled dynamics. Since the effect of unmodelling errors, the residual signal is not only induced by the noise but also the unmodelling error. Therefore, in open-loop condition, model validation is firstly transferred into a hypothesis validation and a new residual estimation method is proposed. Though...
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