Fine-coarse positioning control system with easy adjustment

Details Fine-coarse positioning control system with easy adjustment Fine-coarse positioning control system with easy adjustment

G - Physics

06

F

354/236.13

G06F 3/09 (2006.01) G05B 19/39 (2006.01)

Patent

CA 1238982

FINE-COARSE POSITIONING CONTROL SYSTEM WITH EASY ADJUSTMENT Abstract of the Disclosure A system and method are disclosed for precisely positioning a movable member to a desired fine position after a selected coarse position is reached. In a preferred embodiment of the invention a processor-con- trolled typewheel servo control system is responsive to a command signal for a selected coarse position for selectively utilizing from a memory circuit preselected stored adjustment information for the selected coarse position comprised of an associated coarse position count and quadrant information related to the sinusoids generated by an optical encoder in order to make a precise fine position adjustment in the position of a typewheel after the selected coarse position is reached for that typewheel.

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