Title:
X線管の回転式アノードの駆動モータの回転速度の監視装置
Document Type and Number:
Japanese Patent JP4030606
Kind Code:
B2
Abstract:
The X-ray device has a monitor associated with the electric drive motor (3) for rotation of the anode (1), with a sensor circuit providing an angle signal depending on the phase angle between the motor current and a reference voltage and a comparison circuit for detecting the variation in the angle signal, used as the criteria for the motor rotation. A short-term sampling signal is supplied for providing a decrease in the frequency of the rotary anode drive motor, with storage of the angle signal before the frequency reduction for comparison with the signal obtained at a given point during the sampling frequency.
Inventors:
Gerd Vogler
Application Number:
JP32205995A
Publication Date:
January 09, 2008
Filing Date:
December 11, 1995
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G01P3/00; G01P3/44; G01P3/46; G01P3/48; G01P13/00; G01R25/00; H01J35/10; H05G1/66
Domestic Patent References:
| JP6329499A | ||||
| JP2250691A |
Foreign References:
| DE9006860U1 |
Attorney, Agent or Firm:
Tadahiko Ito