Drive control device for a stepping motor

Details Drive control device for a stepping motor Drive control device for a stepping motor

1997-11-25

1999-06-22

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

059145803

ABSTRACT:
A drive control device for a stepping motor (1) includes a step signal generator (6) for generating a step pulse signal (e) at a constant interval of a period (T1), and an exciting signal generator section (2, 3) for generating an exciting signal in accordance with the step pulse signal, driving the stepping motor in accordance with the exciting signal, where the step pulse signal (e) with the constant period (T1) is obtained in the step signal generator based on externally supplied step data (a) including a step number (n) of a constant period (T0) designating a rotation of the stepping motor to a target position, and even when the step number of the stepping motor is increased in dividing a dummy sine wave stored in ROMs, the processing time of a microcomputer is not affected, attaining a high accuracy in step drive positioning of a stepping motor with smooth rotation thereof.

REFERENCES:
patent: 4476421 (1984-10-01), Moriguchi

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