Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1987-03-18
1988-08-02
Dobeck, Benjamin
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318318, 318341, 318345H, H02P 500
Patent
active
047615915
ABSTRACT:
A device for regulating the RPM of an electromotor with an RPM generator coupled to it for generating pulses, measures the intervals between the pulses of a measure of the RPM of the motor. The device includes an oscillator for generating clock signals, which are transmittable to a counter, which counts the number of clock signals between successive pulses of the oscillator, a register, which accepts the counter indication and a device for generating a control value for correcting the RPM of the electromotor over a digital-to-analog converter connected in series to the motor. To generate the control value for regulating the RPM, and RC network containing a manually adjustable control resistance is provided, the capacitor of which can be short-circuited by a switch, which can be activated by an oscillator-driven contact mechanism. The capacitor is additionally connected to a circuit element for switching on the counter, whose switching off can be activated by the oscillator-driven contact mechanism.
REFERENCES:
patent: 3764876 (1973-10-01), Arthur
patent: 3906319 (1975-09-01), Milligan
patent: 3953776 (1976-04-01), Wolf
patent: 4109184 (1978-08-01), Weber
patent: 4130785 (1978-12-01), Pewet
patent: 4680516 (1987-07-01), Guzik et al.
patent: 4758625 (1986-03-01), Nazarian
Dobeck Benjamin
Pfaff Haushaltmaschinen GmbH
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