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The air is purified under high voltage and high frequency complex electric fields. The results show that the half time TH will drop while the initial concentration N0 of the aerosol particles reduces indoor, under the joint action of high voltage and high frequency complex electric fields and the filter. The half time TH is reduced when they work together. But there is a obviously delay between the...
According to the matrix representation of cubic NURBS surface, this paper presents a G1 continuity sufficient condition for common intersection point of three patches of adjacent cubic NURBS surface and provides specific algorithm for control points and weights of cubic NURBS surface.
The paper proposes a new nonlinear control strategy for three phase permanent magnet synchronous motor, in which the passivity-based controller is used as current inner loop and the active disturbance rejection controller is used as speed outer loop of the control system. Permanent magnet synchronous motor using above new control strategy has excellent dynamic response and steady-state performance...
Frazil ice evolution can result in serious ice damage. Ice damage is a danger to the operation of hydropower station. A 3-D Eulerian multiphase model incorporating the high Reynolds number k-epsiv turbulence model is developed to analyze the formation and evolution of Frazil ice. Frazil ice evolution in the diversion channel of one hydropower station is used as a case. It is concluded that the ice...
The life loss model of dam failure based on standard k-epsiv model coupled with the volume of fluid (VOF) method is studied in this paper. The improved Graham method is adopted to estimate the life loss of dam failure. The Gongming reservoir in Shenzhen city is taken as a case study. The calculated life loss is between 7970 to 10504 in the situation of no warning and very fuzzy public comprehension...
This paper investigates the effect of debt financing in electric power listed company through an empirical research with the regression analysis method. According to the capital structure theory, the effect of debt financing lies in financial leverage effect, the tax shield effect and the company governance effect. Considering the characteristics of the electric power industry, we makes a detailed...
A recurrent wavelet neural network (RWNN) controller is proposed in this study to control the mover of a permanent magnet linear synchronous motor (PMLSM) servo drive to track periodic reference trajectories. First, the dynamic model of the PMLSM drive system is derived. Next, an RWNN controller is proposed to control the PMLSM. Moreover, the connective weights, translations and dilations of the RWNN...
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