Stepping motor drive device

Details Stepping motor drive device Stepping motor drive device

1987-10-09

1989-03-14

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02I 800

Patent

active

048127272

ABSTRACT:
A stepping motor drive device including a comparator for comparing the number of drive steps with a prescribed value and a control circuit for changing the operation of the stepping motor between a 1-2 phase excitation drive mode and a 2-phase excitation drive mode based on the comparison result of the comparator.

REFERENCES:
patent: 4299459 (1985-11-01), Mikazami
patent: 4344678 (1982-08-01), Mikozami
patent: 4471282 (1984-09-01), Moriguchi
patent: 4476421 (1984-10-01), Morizuchi
patent: 4495455 (1985-01-01), Araki
patent: 4529923 (1985-07-01), Izumi et al.
patent: 4540927 (1985-09-01), Tamimoto
patent: 4555653 (1985-11-01), Nawata et al.
patent: 4564796 (1986-01-01), Yoshimo et al.
patent: 4567418 (1986-01-01), Takemoto et al.

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