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Building an accurate model to describe supercapacitor's dynamic characteristics is the basis for energy management strategy and system simulation analysis. This paper presents the support vector machine regression (SVMR) based modeling approach which can describe the supercapacitor's nonlinear property and dynamic characteristics during the process of charging and discharging. The concrete modeling...
Stochastic time delay is a new challenge for communication networks in wide-area damping control (WADC) systems. Uncertainties introduced by stochastic time delays increase the difficulty of modeling, analyzing the stability, and designing the controller. In this paper, a new approach for stability analysis and controller design through expectation modeling is proposed to solve for the uncertainty...
In this article, it describes the method to perform the spacecraft solar array development process modeling by using the flexibility multi-body kinetics and Kane equation, it regards the windsurfing as the flexible body and performs the modal analysis, adopts the FEM and modal condensation technology to establish the discrete model, takes a domestic type of the spacecraft as the example, at the same...
According to the rolling behavior of some plate mill, a 3D elastic-plastic FEM model based on full restart skill of ANSYS/LS-DYNA was established for plate mill. The simulate to the multiple passes plate mill rolling procedures is achieved with the residual stress of previous pass is inherited. By comparing with measured data, it can be seen that the full restart method can be used to analyze the...
Quantum Positioning System is a high security and precision positioning system. This paper introduces the characteristics of the QPS signals transmission in atmosphere channel. According to the channel model, energy attenuation of the QPS signals propagation in atmosphere channel is studied and the calculating formula is given, the simulation to quantum signals attenuation has been made with different...
In order to design a effective EMI filter, noise source impedance (complex impedance) is very crucial, but actually, the result is low accuracy and no phase by employing traditional approaches. In the paper, a modified EMI noise source impedance modeling is proposed to investigate the characterization of EMI source impedance. The test shows that suggested method is more accurate and effective. Moreover,...
This paper carries on an empirical research dynamically on US foreign direct investment in China and Sino-American trade, adopting Johansen cointegration test, the VEC Model, Granger Causality Test and implus response technology, based on analytical quarterly data in the period from 1995 to 2009. The studying result demonstrates that there is a stable relationship among the US foreign direct investment...
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