Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1982-11-22
1985-03-26
Dobeck, B.
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
361415, 310 71, G05B 106
Patent
active
045075964
ABSTRACT:
The position adjusting drive unit for a sewing machine having its work shaft driven by an electromotor with an adjustable rotary speed, includes a supporting box connected to the electromotor and including a power supply transformer and an activation mechanism for a signal generator for desired and actual values of the rotary speed of the motor and of the angular position of the working shaft; an exchangeable printed circuit board supports all electrical and mechanical component parts of the speed regulating and angular position adjusting circuits including the signal generators and the coupling rod between the activation mechanism in the supporting box and the part of the activation mechanism on the circuit board is guided into the proper coupling position when the circuit board is electrically connected to the power supply transformer.
REFERENCES:
patent: 4080759 (1978-03-01), Klar et al.
patent: 4223257 (1980-09-01), Miller
Angersbach Wolfgang
Meier Karl-Heinz
Dobeck B.
Quick-Rotan Elektromotoren GmbH
Striker Michael J.
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