Positioning method and positioning system

Details Positioning method and positioning system Positioning method and positioning system

1995-05-24

1997-08-26

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

Plural servomotors

318593, 318626, 318685, 310311, G05D 312, B65G 4907, B23Q 1600

Patent

active

056613881

ABSTRACT:
A positioning method and positioning system wherein a driving device, for moving a movable table on a rough-motion stage by a small amount, is alternately controlled through a pair of switchable control systems. The amounts by which the table is driven are initially adjusted to the same amounts by the pair of control systems when the paired control systems are switched.

REFERENCES:
patent: 3997828 (1976-12-01), Bottcher et al.
patent: 4987526 (1991-01-01), Slocum et al.
patent: 5112133 (1992-05-01), Kurosawa et al.
patent: 5157700 (1992-10-01), Kurosawa et al.
patent: 5172402 (1992-12-01), Mizusawa et al.
patent: 5182615 (1993-01-01), Kurosawa et al.
patent: 5377251 (1994-12-01), Mizusawa et al.

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