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PSS4B stabilizer is a multi-band stabilizer received attention in recent years. The effectiveness of such a stabilizer depends on a number of factors, among them how stabilizer parameters are tuned playing a key role. In this case study, two common parameter tuning methods, the ideal phase curve method and the residue method, are used to determine the parameters of a PSS4B stabilizer and a PSS1A stabilizer...
Similarity measurement for spectral clustering has been well-studied in recent years due to its crucial role on describing the intrinsic structure of data points. In this paper, we propose a hybrid attributes similarity measure method to process the Gaussian kernel affinity matrix. Compared with traditional global or local scale methods, our new similarity measurement has a rather robustness to reflect...
A novel geometrically invariant watermarking scheme based on nonlinear anisotropic diffusion (NAD) detector of the feature points in images is proposed. The NAD feature points detector performs feature points detecting more accurately than Harris detector in an image, which correspondingly can definitely enhance the robustness and the imperceptibility of the watermarking scheme. According to the feature...
In this paper the analysis of small signal stability of grid-connected doubly fed induction generators (DFIG) is presented. The detailed model of grid-connected DFIG wind turbine is firstly established, and the eigenvalues are classified and characterized based on participation factors. Then the modal analysis including its converter and pitch controllers is studied, and model simplification of the...
In applications such as document understanding, only binary face images may be available as inputs to a face recognition (FR) algorithm. In this paper, we investigate the effects of the number of grey levels on PCA, multiple exemplar discriminant analysis (MEDA) and the elastic bunch graph matching (EBGM) FR algorithms. The inputs to these FR algorithms are quantized images (binary images or images...
Based on eigenvalue analysis of small signal stability analysis, mechanism of large power oscillations of inter-area lines caused by local mode is studied by right eigenvector characteristic and generator power-angle characteristic. Eigenvalue of local mode is changing with running conditions and relations between the elements of right eigenvector of all generators also are changed. When power deviations'...
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