D - Textiles – Paper – 05 – B
Patent
D - Textiles, Paper
05
B
341/100
D05B 69/00 (2006.01) G05B 19/23 (2006.01) G05B 19/35 (2006.01) G05B 19/414 (2006.01)
Patent
CA 1137594
ELECTRONIC SEWING MACHINE WITH POSITION CONTROL LOOP OF DIGITAL TYPE Abstract of the Disclosure The invention concerns an electronic sewing machine comprising a needle bar device adapted to provide transverse displacements of said needle relative to the direction of feed of the cloth in said sewing machine, a transport device adapted to provide cyclic displacements of said cloth for said feed, actuating means for regulat- ing a transverse displacement of said needle bar device and a displacement of said transport device in response to control signals, first means generating position control signals for said actuator means, said first means being operatively connected to at least one of said actuator means via a position control circuit generating said control signals in order to be able controllably to regulate the position of said needle bar device and/or said transport device, characterized by the fact that said position control circuit comprises a transducer device for the position of said actuator means and/or said controlled device, said transducer device generating at its output signals adapted to be compared directly or indirectly in digital value with said position control signals for said actuator means in order to supply said control signals to said actuator means; the said comparison between said signals in digital value taking place in processing means.
345660
Bussolati Camillo
Carbonato Gianfranco
Kirby Eades Gale Baker
Necchi Societa Per Azioni
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