Title:
ステッピングモータの制御装置
Document Type and Number:
Japanese Patent JP4465117
Kind Code:
B2
Abstract:
In a stepping motor control method using an encoder, a timer means is provided, and an excessive advance of a phase during low rotation is restricted to attain a high speed without compromising stability during low rotation by driving the motor in such a manner that a pre-reversal state is recovered a predetermined time after a voltage reversal and a post-reversal state is recovered after one cycle of an angle detecting means. A device is provided which controls a speed by a pulse generator generating pulses at predetermined intervals, which detects a sudden drop in speed from a predetermined time elapsed from the last pulse, and which detects, when a speed is to be recovered, an abnormal drop in motor rotation independent of the motor rotation speed by changing a threshold value of an elapsed time according to an actual speed, a speed command value and an acceleration command value. A device is provided which controls deceleration by switching from a close-loop control to microstep driving in deceleration, wherein a drive amplitude in microstep drive into a predetermined relation with a drive amplitude in closed-loop control so that unnecessary vibration when switching to microstep driving is prevented while out-of-step is prevented.
Inventors:
Toru Kawabata
Yoshihiro Mushika
Kajino Osamu
Yoshihiro Mushika
Kajino Osamu
Application Number:
JP2000583151A
Publication Date:
May 19, 2010
Filing Date:
November 12, 1999
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H02P8/00; H02P8/22; H02P8/38
Domestic Patent References:
| JP8331896A | ||||
| JP10150798A | ||||
| JP63092297A | ||||
| JP2032800A | ||||
| JP2563788B2 | ||||
| JP2749349B2 |
Attorney, Agent or Firm:
Hidesaku Yamamoto