Stepping motor control method

Details Stepping motor control method Stepping motor control method

1997-08-26

2000-06-06

Loomis, Paul

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

318696, G11B 555

Patent

active

060726563

ABSTRACT:
In a stepping motor control method having an object for correctly and relatively simply determining the position of a pseudo-track center in the dead zone of a stepping motor, a forwardly and reversely rotatable stepping motor is rotated by that a plurality of the excitation phases thereof are sequentially driven by a driving pulse, a head is moved to a predetermined track position of a disc-shaped recording medium, a predetermined one of the excitation phases of the stepping motor is additionally driven by being intermittently supplied with a driving current for a minute period of time when the head moves to the predetermined track position and enters the dead zone of the stepping motor and the head is stopped at an end of the dead zone of the stepping motor.

REFERENCES:
patent: 4612588 (1986-09-01), Tsukahara
patent: 5264771 (1993-11-01), Kawauchi

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