Method for driving three phase stepping motor

Details Method for driving three phase stepping motor Method for driving three phase stepping motor

1992-05-29

1994-02-01

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318 81, 318732, 318440, 318808, 388806, 310 51, H02P 5162

Patent

active

052835103

ABSTRACT:
As a method for energizing a three-phase stepping motor of Y-connection, driving current values are set to be values resembling sine wave input approximation, thus making it possible to effect driving at small vibration. Energizing of the three-phase stepping motor is performed by a two-three phase driving scheme which calls for alternately effecting a two-phase excitation of the coils in the motor and a three-phase excitation of the coils in the motor. The driving current flowing through each of the coils approximates a sine wave having normalized values defined by .+-. 1, .+-. 0.87, .+-. 0.5 and 0.

REFERENCES:
patent: 3599069 (1971-08-01), Welch
patent: 4701687 (1987-10-01), Yoshimoto
patent: 4857817 (1989-08-01), Kugioka

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