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This paper presents an advanced guidance law which is based on robust feedback linearization (RFL) concepts and design procedures for autonomous pursuit of predefined waypoints for unmanned aerial vehicles (UAVs) in the three-dimensional (3D) area. In this investigation, a nonlinear 3D model of UAV considered wind gust disturbances is used for realizing realistic flight maneuvers. In this investigation,...
Guidance law design of unmanned surface vessel (AUSV) design for ocean environment survey is as important as missions of autonomous vehicles and unmanned aerial vehicles (UAV). As the characteristic depicted, unmanned surface vessel is often used to sail under harsh climates to execute missions. However, there are many uncertainties on the ocean, such as wind gust, ocean current and irregular waves,...
Scene recognition is a hot topic in the field of computer vision, a fast scene recognition method based on saliency region and SURF (speeded up robust features) is proposed in this paper. This method adopts PFT (phase fourier transform) to construct saliency map, on the basis the algorithm of top-ranking extreme points selection based neighborhood entropy is used get saliency region information. Finally...
There are, in practice, so many control systems possesses this kind of special feature, e.g., ballistic missile's maneuver couples with wind gusts, acceleration signal measured by accelerometers couples with the external and internal noises, and so on. Generally, the input signal u(k) is always assumed as an exactly known variable and never corrupted with noise; hence one is capable of dealing with...
By the promotions of the molecular bioanalysis techniques, the requirements of purity of tissues are also high. However, the desired purity of tissues usually cannot be achieved by human works because of man-made faults hence, one control design that is useful to the microdissections of tissues should be investigated. In this paper, a robust control law based on LMI technique is proposed for microdissections...
Multiplicative plant perturbations with H??-norm bounds are considered. The results of [9] are applied to the problem of robust stabilization with nominal sensitivity being less than some prespecified value and the robust performance (sensitivity) problem with a guaranteed stability robustness margin. A necessary and sufficient condition for the solvability of the first problem and a sufficient condition...
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