Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1975-10-06
1977-06-28
Dobeck, B.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318317, 318318, H02P 550
Patent
active
040328260
ABSTRACT:
A circuit arrangement for phase-alignment of a servo drive for a rotary system, to whose correction element for correcting the speed of said system the output signal of a phase detector is applied via a transmission path which output signal determines the mutual phase relationship of an actual signal and of the desired signal, comprises two gate circuits of which one circuit receives the pulse-shaped actual signal and the other circuit receives the pulse-shaped desired signal as an input signal, and whose output signals are applied to the transmission path in phase opposition for phase-alignment of the rotary system, each of the gate circuits being controlled by a bistable multivibrator which can also be changed over by said actual and desired signals, so that a gate circuit is opened only when its input signal contains more than one pulse between two consecutive pulses in the input signal of the other gate circuit.
REFERENCES:
patent: 3500160 (1970-03-01), Sommer
patent: 3870937 (1975-03-01), Ban
patent: 3873900 (1975-03-01), Sommer et al.
patent: 3931556 (1976-01-01), Ban
Jahnke Uwe
Sommer Friedrich
Cohen Simon L.
Dobeck B.
Trifari Frank R.
U.S. Philips Corporation
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