Title:
MOTOR ACTUATION METHOD
Document Type and Number:
Japanese Patent JP2002032952
Kind Code:
A
Abstract:
To reduce the power consumption of a spindle motor and to reduce the noise at actuation time while securing the reliability of the actuation of the motor.
An actuation signal corresponding to a minimum required actuation current for actuating the spindle motor is sent to a spindle motor driving part to actuate the spindle motor. When the rotational frequency of the motor reaches a rotational frequency a little slower than a target rotational frequency, a system control part sends a command to perform switching to feedback control and the rotational frequency of the spindle motor is controlled thereafter under the feedback control.
Inventors:
YOSHIOKA YASUHIRO
KONO KAZUHIKO
KANEAKI TETSUHIKO
SHIBANO MASAYUKI
KONO KAZUHIKO
KANEAKI TETSUHIKO
SHIBANO MASAYUKI
Application Number:
JP2000217095A
Publication Date:
January 31, 2002
Filing Date:
July 18, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B19/20; G11B19/28; H02P1/52; H02P6/06; H02P6/08; (IPC1-7): G11B19/20; G11B19/28; H02P1/52; H02P6/20
Attorney, Agent or Firm:
Ryuji Higashijima
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