Low power stepper motor drive system and method

Details Low power stepper motor drive system and method Low power stepper motor drive system and method

1988-03-01

1989-07-25

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 368157, H02P 800

Patent

active

048517550

ABSTRACT:
A system and method for driving a stepper motor utilizing a near minimum amount of driving power is described. A stepping detector is utilized to determine whether the motor has actually stepped in response to a driving power applied thereto. When it is determined that the motor has stepped, the magnitude of the driving power is decreased. When the stepping detector indicates a stall condition, the driving power is increased. As a result, the motor operates near stall condition and power consumption is minimized. In the preferred embodiment during each consecutive step a different phase of the motor is deenergized to conserve power. By stepping the motor a voltage pulse is induced into the deenergized phase. The polarity and magnitude of that voltage pulse are examined after each step to determine whether the motor has actually stepped. The use of the deenergized phase to ascertain motor status eliminates the need for an external stepping detector.

REFERENCES:
patent: 3368128 (1968-02-01), Parrish
patent: 3577176 (1971-05-01), Lawler
patent: 4027215 (1977-05-01), Isaacson
patent: 4035708 (1977-07-01), Schaff
patent: 4054820 (1977-10-01), Foster
patent: 4129810 (1978-12-01), Harshberger
patent: 4192131 (1980-03-01), Hosokawa et al.
patent: 4275343 (1981-06-01), Curtiss
patent: 4282471 (1981-08-01), Budniak et al.
patent: 4319174 (1982-03-01), Cook et al.
patent: 4422040 (1983-12-01), Ward
patent: 4460282 (1984-07-01), Konno
patent: 4511829 (1985-04-01), Wisniewski
patent: 4551665 (1985-11-01), Antoguini et al.
patent: 4715725 (1987-12-01), Kawamura

Affiliated with

Also associated with

Rating

Low power stepper motor drive system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low power stepper motor drive system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low power stepper motor drive system and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2360709