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An improved evolutionary multi-objective optimization method is introduced to solve the general multi-objective optimization problem with the constraint functions and the different important degree of objective functions. In this method the genetic algorithm is used to search the global optimum solutions. The group is divided into unfeasible domain and feasible domain. Unfeasible solutions are sorted...
In this paper, it expounded in detail the principle of energy spectrum analysis based on Discrete Wavelet Transform and Multi-resolution Analysis. In the aspect of study on feature extraction method, with investigating the feature of impact factor in vibration signals and considering the non-placidity and nonlinear of vibration diagnosis signals, this paper imported wavelet analysis and fractal theory...
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