Title:
MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3252732
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a motor control device capable of realizing the stable start in the low speed rotation.
SOLUTION: A compensating means to produce the control signal of a motor comprises a speed error preparing means 24 to prepare the speed error by the speed information signal (Tv, qv) corresponding to the rotational speed of the motor, an addition signal preparing means 34, a control signal preparing means 27, a control signal updating means 31, and a control operation selecting means 22. The control operation selecting means 22 controls the time by the operation of a time measuring means 23, and when it is detected that the speed information signal is not inputted for the prescribed time, the control signal updating means 31 is operated, and the addition signal M is changed by the prescribed quantity α.
Inventors:
Akihiko Nakamura
Takeyuki Hasegawa
Atsushi Hashimoto
Takeyuki Hasegawa
Atsushi Hashimoto
Application Number:
JP34697796A
Publication Date:
February 04, 2002
Filing Date:
December 26, 1996
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H02P1/16; H02P21/34; H02P23/16; H02P27/02; H02P29/00; (IPC1-7): H02P1/16; H02P5/00; H02P5/402
Domestic Patent References:
| JP421381A | ||||
| JP5236778A | ||||
| JP630575A | ||||
| JP9233873A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)