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This paper presents a new approach for the determination of buried cable ampacity, considering the humidity migration in soil caused by the temperature rising around cables, and compares calculated results with migrationless considerations. To optimize the utilization of current carrying capacity, accurate calculation of real-time ampacity is needed in case of buried cable transmission systems, which...
Two-phase space vector pulse-width modulation (SVPWM) algorithm is proposed in this paper based on the SVPWM analysis. Formulas of space voltage vector pulse width modulation (SVPWM) is calculated. Two-phase SVPWM is applied on the current most widely used two-phase hybrid stepping motor in this paper and simulated by Matlab/Simulink. Simulation results show that the method is feasible.
In real application, many important physical phenomena are sufficiently localized that adaptive finite element analysis methods are necessary. In the numerical solution of practical problems in engineering and physics such as in electromagnetic mechanics, the overall accuracy of numerical approximations often deteriorates due to local singularities like those arising from re-entrant corners of domains,...
A method for the computation of local magnetic force in suspension system is proposed. Precise calculation of magnetic force in electromagnet is significant to structure design. Therefore, on the basis of finite element method (FEM) and local virtual work method, a mathematical model is built according to the principle of virtual work equivalent, so as to calculate the magnetic force. Application...
In Web service composition, the benefit conflicts between the user and the service provider ask the so-called both win to be supported. To address this concern, a novel QoS-guaranteed service composition approach based on a win-win strategy is proposed in this paper. First, a QoS model based on the probability interval is built to adapt to the dynamic nature of the Internet, and a corresponding user...
Relative positioning, which is used in the flight of spacecraft with flying in formation, satellite network, and mobile robot network and so on, is highly available scheme for marine intelligent transportation network to guarantee the positioning accuracy and performance. Currently, some ship relative positioning method based on the original measurement and local positioning estimate in marine ship...
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