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In this study, a designing method of the control system in the field weakening control region for permanent magnet synchronous motors (PMSMs), is proposed to enhance the torque control performance. Control parameters are designed by analyzing frequency characteristics of the control system using the q-axis current. The proposed controller designing method is examined by both numerically and experimentally...
In this paper, we reveal new findings about the generated musical noise in minimum mean-square error short-time spectral amplitude (MMSE STSA) processing. Recently we have proposed a objective metric of musical noise based on kurtosis change ratio on spectral subtraction (SS). Also we found an interesting relationship among the degree of generated musical noise, the shapes of signal-s probability...
The magnetic anisotropy sensor (MAS) is a stress sensor that detects internal stresses induced by the inverse magnetostrictive effect. In this study, the sample is a cold rolled steel plate used in a car body. For flux penetration depths greater than the sample thickness (0.75 mm), the MAS detects the average of the internal stress distribution, producing an output voltage related to the internal...
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