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Velocity Profile Generator Disclosure Number: IPCOM000053346D
Original Publication Date: 1980-Jan-01
Included in the Prior Art Database: 2005-Feb-12

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Parks, DP [+details]


A velocity profile for printers. or similar mechanisms, that employ a two-phase stepper motor to move the print head, or load, and that have a source of feedback pulses proportional to head displacement is obtained by the procedures described. Direction of stepper motor rotation is detected by sensing drive motor pulses and optically isolating the analog velocity voltage from noisy digital logic.