Title:
ANODE ROTATIONAL DRIVE DEVICE AND X-RAY IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/073983
Kind Code:
A1
Abstract:
In order to provide an X-ray imaging device provided with a small, lightweight two-phase anode rotational mechanism drive circuit, an end of a main stator coil is connected to a three-phase full bridge inverter circuit and the center point of two semiconductor switches for a first arm, one end of an auxiliary stator coil is connected to the center point of two semiconductor switches for a second arm, and the other ends of the main stator coil and the auxiliary stator coil are connected to the center point of two semiconductor switches for a third arm. An inverting circuit and a delay circuit are used to switch the semiconductor switches so as to provide a first AC voltage to one end of the main stator coil, and a second AC voltage, which is shifted in phase by 90° from the first AC voltage, to the auxiliary stator coil.
Inventors:
HISHIKAWA SHINGO (JP)
Application Number:
PCT/JP2011/077599
Publication Date:
June 07, 2012
Filing Date:
November 30, 2011
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
HISHIKAWA SHINGO (JP)
HISHIKAWA SHINGO (JP)
International Classes:
H05G1/66; H01J35/10; H05G1/18
Foreign References:
| JPH06209594A | 1994-07-26 | |||
| US4829551A | 1989-05-09 | |||
| JP2004171867A | 2004-06-17 | |||
| JP2000150193A | 2000-05-30 | |||
| JPS62173988A | 1987-07-30 | |||
| JPS5720173A | 1982-02-02 |
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