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A FV-FD hybrid algorithm is proposed by presenting a novel connecting condition between the two algorithms which march in time in different schemes. The reflection error induced by the connecting boundary is analyzed. The RCS of a 3D PEC sphere is calculated as a numerical example, which shows that the hybrid algorithm has the advantages of higher accurate, reducing running time and saving computational...
Frequency is an important index to represent electric power system quality, and it is often used to improve the accuracy of harmonic, flicker and inter-harmonic calculation for a distorted voltage waveform. Since the existing frequency calculation algorithms have some different problems, this paper proposes a scheme to enhance the algorithm of demodulation of two complex signals. This algorithm can...
We study the tracking problem for stable minimum phase systems with input amplitude constraints and bounded external disturbances. Furthermore, we explore how the disturbance and constraint on the control input signal influence the control system. We find the difference between the control input signal whose system parameters are unknown and control input signal whose system parameters are known is...
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