Step motor stabilization control

Details Step motor stabilization control Step motor stabilization control

1999-06-30

2000-08-08

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318611, 318293, 318484, H02P 812

Patent

active

061006629

ABSTRACT:
A method and circuit for controlling a motor and reducing and/or eliminating mid-velocity instability in the motor are provided. The method includes the step of receiving a decay time indicative signal that is indicative of the current decay time in a phase coil of the motor after current commutation. The decay time indicative signal assumes a first polarity proportional to the current decay time in the phase coil. The method further includes the step of calculating a delay time corresponding to the amount of time the decay time indicative signal has the first polarity. Finally, the method includes the step of controlling the direction of current in the phase coil or another phase coil of the motor responsive to the delay time and a current direction signal generated by a translator. The inventive method and circuit enable reduction and/or elimination of mid-velocity instability even when the motor is operated in a microstepping mode.

REFERENCES:
patent: 3593097 (1971-07-01), Gebelein, Jr.
patent: 3863118 (1975-01-01), Lander et al.
patent: 3911339 (1975-10-01), Rettig
patent: 4081736 (1978-03-01), Leenhouts et al.
patent: 4119895 (1978-10-01), Muller
patent: 4119901 (1978-10-01), Leenhouts
patent: 4250435 (1981-02-01), Alley et al.
patent: 4455520 (1984-06-01), Ward et al.
patent: 4484126 (1984-11-01), Fulton et al.
patent: 4514666 (1985-04-01), Suzuki
patent: 4673855 (1987-06-01), Boillat
patent: 4675590 (1987-06-01), Pellegrino et al.
patent: 4683409 (1987-07-01), Boillat
patent: 5015903 (1991-05-01), Hancock et al.
patent: 5122715 (1992-06-01), Kimura et al.
patent: 5153492 (1992-10-01), Landseadel
patent: 5162798 (1992-11-01), Yundt
patent: 5216345 (1993-06-01), Eyerly
patent: 5420492 (1995-05-01), Sood et al.
patent: 5717297 (1998-02-01), Karwath et al.
Pacific Scientific, "6000 Series Microstepping Drives", pp. C6-C10. Model 6410. "Microstepping Drive Module". (No publication date).
Industrial Devices Corporation, "Take the Next Step in Microstepping Technology with the Next Step Microstepping Drive", pp. 36-42. (No publication date).
Industrial Devices Corporation, "Next Step Microstepping Drive Quick Setup & Reference" (3 pages). 64 Digital Drive, Novato, CA 94949. published Sep. 2, 1997.

Affiliated with

Also associated with

Rating

Step motor stabilization control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Step motor stabilization control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Step motor stabilization control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1153243