Driving method for three-phase stepping motor

Details Driving method for three-phase stepping motor Driving method for three-phase stepping motor

1992-03-31

1994-06-14

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

053213408

ABSTRACT:
This invention provides a driving method for a three-phase stepping motor used in various types of electrical equipment, which driving method reduces vibration peculiar to a stepping motor and can drive the stepping motor smoothly. Specifically, the driving method comprises alternating two-phase conduction of conducting a current from a first terminal to a second terminal of coils having three terminals of a three-phase stepping motor internally connected by a Y-connection with three-phase conduction of conducting the first terminal to the second terminal and from a third terminal to the second terminal simultaneously, to energize the coils sequentially according to a specified sequence, thereby making the motor rotate in units of 1/2 of the basic step angle with low vibration.

REFERENCES:
patent: 4833387 (1989-05-01), Pfeiffer
patent: 4888542 (1989-12-01), Muranake
patent: 4929879 (1990-05-01), Wright et al.
patent: 4956595 (1990-09-01), Hirofumi et al.

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