Electricity: motive power systems – Positional servo systems – With particular motor control system responsive to the...
Patent
1975-10-06
1977-12-27
Hohauser, Herman J.
Electricity: motive power systems
Positional servo systems
With particular motor control system responsive to the...
318696, 310 49R, H02K 2902
Patent
active
040657086
ABSTRACT:
An improved method and apparatus for determining the speed and position values of a stepping motor for controlling or regulating the same. These values are derived from induced voltages within the bifilar windings of the stepping motor combined with voltages across and currents through the same bifilar windings. The speed values are derived from the amplitude of the induced voltages and the position values are derived from the zero transitions of the induced voltages. A desirable advance of the motor is distinguished from an undesirable oscillation of the motor by determining whether the induced voltages in the bifilar windings become zero simultaneously.
REFERENCES:
patent: 3250977 (1966-05-01), Heggen
patent: 3374410 (1968-03-01), Cronquist et al.
patent: 3548274 (1970-12-01), Mako
Ulland Hartmut
Zimmermann Volker
Zuehlke Rainer
Hairston Kenneth W.
Hohauser Herman J.
International Business Machines - Corporation
Jancin, Jr. J.
Klitzman M. H.
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