Apparatus for and method of controlling stepping motor

Details Apparatus for and method of controlling stepping motor Apparatus for and method of controlling stepping motor

1998-04-23

1999-04-13

Masih, Karen

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 318138, 318254, 318439, 318779, 388811, 388815, H02P 800

Patent

active

058942092

ABSTRACT:
An apparatus for controlling a stepping motor used for moving a carriage having a pickup from a first position to a second position, the apparatus having: a calculating device for calculating a moving distance between the first position and the second position; a setting device for setting an acceleration area to accelerate the stepping motor and a deceleration area to decelerate the stepping motor, on the basis of the moving distance; and a driving device for driving the stepping motor by a one-two-phase excitation method until rotation velocity of the stepping motor increases to a predetermined velocity in the acceleration area, driving the stepping motor by a two-phase excitation method after rotation velocity of the stepping motor increases to the predetermined velocity in the acceleration area, driving the stepping motor by the two-phase excitation method until rotation velocity of the stepping motor decreases to the predetermined velocity in the deceleration area, and driving the stepping motor by the one-two-phase excitation method after rotation velocity of the stepping motor decreases to the predetermined velocity in the deceleration area.

REFERENCES:
patent: 5503131 (1996-04-01), Ohuchi
patent: 5583620 (1996-12-01), Miyamoto

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