Apparatus and method for generating clock pulses from a power selsyn multiple motor drive system for a glassware forming machine
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United States of America Patent
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-
Aug 23, 1983
Grant Date -
N/A
app pub date -
Dec 10, 1981
filing date -
Dec 10, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for generating clock pulses to an electronically controlled glassware forming machine from the variable frequency power present in a power selsyn multiple motor drive system is disclosed. The frequency of the power present in the selsyn rotor windings is subtracted from the frequency of the power present in the selsyn stator windings to generate a difference frequency signal. The difference frequency signal has a frequency which is directly proportional to the speed of the rotating selsyn rotors. The difference frequency signal can be scaled to provide a desired number of clock pulses and reset pulses per machine cycle.
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