Title:
SERVO CONTROL METHOD AND DEVICE FOR DC MOTOR
Document Type and Number:
WIPO Patent Application WO/2002/049202
Kind Code:
A1
Abstract:
A PWM control unit which outputs to a power supply unit a PWM signal matching a PWM target value for the servo-control of a dc motor, and which comprises a synchronous control unit, a PWM operation unit, a PWM target value selection unit, and a PWM instruction unit. The synchronous control unit completes all the predetermined processings and operations during a control time zone to which a PWM signal for determining a supply power to a motor is allocated, and instructs the starts of a PWM operation, a PWM target value selection and a PWM instruction allocated to respective time sub-zones obtained by equally dividing the control time zone into n sections. PWM target values corresponding to a plurality of control target values (DP¿0?, DV¿0?, DT¿0?) are operated in parallel to enable a servo control quickly following up a change in control mode.
Inventors:
KASAGAMI FUMIO
NODA TOSHIKAZU
NODA TOSHIKAZU
Application Number:
PCT/JP2001/010830
Publication Date:
June 20, 2002
Filing Date:
December 10, 2001
Export Citation:
Assignee:
DAIHEN CORP (JP)
International Classes:
H02P6/08; H02P6/28; H02P6/06; H02P7/06; H02P7/29; H02P29/00; (IPC1-7): H02P6/14
Foreign References:
| JPS58183089U | 1983-12-06 | |||
| JPH05115188A | 1993-05-07 | |||
| JP2000166007A | 2000-06-16 | |||
| JPS60200792A | 1985-10-11 | |||
| JPH04229088A | 1992-08-18 |
Other References:
See also references of EP 1286457A4
Attorney, Agent or Firm:
Yoshimura, Katutoshi (Kitahorie 1-chome Nishi-ku Osaka-shi, Osaka, JP)
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