Electronic cam control system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 12, 2001
Grant Date -
N/A
app pub date -
Feb 24, 2000
filing date -
Dec 30, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An electronic cam servo apparatus uses a digital servo controller to perform motion equivalent to a mechanical cam. The control apparatus has one data table representing a characteristic of a mechanical cam and utilizes a data interpolation and the first derivative of a cam position profile to determine position and velocity commands to drive a servo motor which performs motion equivalent to a mechanical cam. Alternatively, the control apparatus uses the first cam specific data table to determine the position, velocity and torque/current command to drive a servo motor. The apparatus may additionally use a second data table representing varying cam load to obtain a more accurate torque/current command correction.
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