Control method and apparatus for positioning servo system

Details Control method and apparatus for positioning servo system Control method and apparatus for positioning servo system

1987-01-27

1987-10-27

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318696, 360 78, G05B 1940

Patent

active

047032421

ABSTRACT:
A magnetic disc head positioning system using a stepper motor eliminates positioning errors due to different approach directions and distances to a target track position through a drive control of temporarily stopping the head at a position immediately preceding or following the target track depending on the approach direction and, thereafter, moving the head from this position to the target track with a constant transient response. The head is brought to the temporary stop position by utilizing the overshooting response of the stepper motor so as to minimize the positioning time.

REFERENCES:
patent: 4437049 (1984-03-01), Tullos et al.
patent: 4489259 (1984-12-01), White et al.
patent: 4490662 (1984-12-01), Moribe et al.

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