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A 3-D model of the dielectric-loaded rectangular Cerenkov maser for the beam-wave interaction is proposed. The hybrid-mode dispersion equation is derived with the Borgnis potential functions by using the field-matching method. Moreover, its approximate solution is obtained under the assumption of dilute beam. Through numerical calculations, the effect of the dielectric layer thickness, bean thickness...
In this paper, we use the gray model through the consolidation of original data to find the changing laws of the system, to generate a strong regularity of the data series, thus well predict the changing trend of the future. Meanwhile, considered the defect that the grey action of traditional GM(1,1) model is constant, we introduce a sine function relation and make the grey action into a dynamic variable...
Love wave sensors employing guiding layer deposited on a ST-90degX quartz were presented and analyzed. Since solidified SU-8, as one kind of polymer, has low shear velocity, while its rigidness is almost same with SiO2, So SU-8 is very appreciated for Love wave sensor layer. Firstly, as for the two layers structure (SU-8/ ST90degX -quartz), the Love wave phase velocity was calculated by propagation...
A backstepping adaptive control method is proposed for a nonlinear system with unknown parameters, unmatched uncertainties and external disturbance. The parameters in each equation can be adjusted respectively. Nonlinear damp technology is used to eliminate uncertainties, and the L2 gain of the unknown disturbance less than or equal to a prescribed index. For nonlinear torpedo model, the input-output...
This paper proposes a coefficient-based policy searching method, the direct policy search (DPS), for searching (learning) and construct policies for controlling the altitude of an aircraft. The DPS is a new and efficient reinforcement learning (RL) strategy combined with genetic algorithms (GAs). Specifically, an optimal policy in DPS consists of a set of coefficients which are learned using GA-based...
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