Taketo Yamakawa

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This paper investigates a starting procedure of rotational sensorless permanent magnet synchronous motor (PMSM) in the rotating condition, which is suitable for some applications with higher maximum rotor frequency and longer current sampling time. Instantaneous estimation of initial rotor position and frequency, right after gates start, is essential for(More)
This paper investigates a new flux-weakening operation of interior permanent magnet synchronous motors for railway vehicle traction. A design method of the controller is also suggested. The control method is verified both numerically and experimentally to ensure that it is feasible enough to be applied to the railway vehicle traction system
This paper presents the results of work carried out under the auspices of the joint ISPRS CNES Scientific Assessment Program of DEM generation from SPOT 5 high resolution stereoscopic (HRS) image data. A stereo pair of HRS images of Melbourne, Australia, with a ground sample distance of 5m in the along track direction, and 10m in the across track direction,(More)
The purpose of this study is to consider how to use an electronic learning (e-learning) system in engineering design. An e-learning trial in an engineering design course was introduced as an on-line self-study module in order to support learning outside of the classroom at the Kanazawa Institute of Technology. This paper contains a description of the(More)
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