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1.
UPML媒质中无条件稳定的二维ADI-FDTD方法 总被引：2，自引：0，他引：2
对单轴各向异性PML（UPML）媒质中二维TM波的交变方向隐式时域有限差分方向（ADI-FDTD）,通过计算实例表明,ADI-FDTD方法在UMPL媒质中是无条件稳定的,其时间步长不受CFL稳定性条件的限制,并且当计算区域内具有精细差分网格时,其计算效率明显优于传统的时域有限差分方向（FDTD）。 相似文献
2.
This article presents a new technique for the detection of power quality (PQ) events by using statistically matched wavelet. The statistically matched wavelet is designed based on the characteristics of the PQ event using the concept of fractional Brownian motion. The proposed technique is compared with Daubechies wavelet to show its superiority in the detection of PQ events. To classify the detected events, an iterative closest point algorithm is used which classifies the detected event even in the presence of outlier points and Gaussian noise. The method is applied to classify the various PQ events like transient, sag, swell and harmonics and the results are simulated using MATLAB version 7.3. 相似文献