Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1990-01-11
1992-04-14
Ro, Bentsu
Electricity: motive power systems
Open-loop stepping motor control systems
H02P 800
Patent
active
051051400
ABSTRACT:
The present invention provides a drive signal for a peristaltic pump motor. A first circuit is provided which generates a first series of pulses at a given frequency. A second circuit is provided which generates a second series of pulses having a frequency higher than the frequency of the first series of pulses. A third circuit is provided which generates a third series of pulses having a frequency between the frequency of the first and second series of pulses. Finally, a circuit is provided which combines the three series of pulses into a drive signal. The drive signal length is determined by the frequency of the first series of pulses. The drive signal further is divided into two sections, an initial pulse stage determined by the frequency of the third series of pulses, and a modulated pulse stage being a series of pulses determined by the frequency of the second series of pulses.
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Bowman George A.
Matthews Joseph B.
Baxer International Inc.
Flattery Paul C.
Ro Bentsu
Rockwell Amy L. H.
Schaafsma Paul E.
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