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This paper presents a new method of how to choose the key points of monotone sequences based on the basic theory of time series segmentation algorithm, which is to select the key points from monotone sequences by calculating the curvatures. With such method, time series can be well linear-fitted. This method is also used for fault diagnosis of sensor. Key point sequence of the maximum difference can...
The abstract of real voice of the aphasiacs is of great importance in the rehabilitation system. In this paper a new method of using wavelet for rehabilitation system was raised, it also improves the wavelet decomposition by refining its high frequency part in order to improve the SNR of voices. Simulation was given by using the combination of advanced wavelet decomposition and soft thresholding....
Despite many benefits of support vector machine (SVM), all the data points are treated identically in the learning process of conventional SVM, which causes the algorithm extremely sensitive to the outliers and the noise data. For this problem, a new SVM algorithm based on possibility degrees (PDSVM) is proposed. Considering the variation of the geometric significance among different classes in a...
The brushless direct current motor (BLDCM) has high torque, compact size, and high efficiency. Therefore, BLDCM is widely used in computers, household and industrial products, and automobiles. It is usually driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI) and acoustic noise, etc. To solve...
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