Device for controlling the drive of a stepping motor, to adjust

Details Device for controlling the drive of a stepping motor, to adjust Device for controlling the drive of a stepping motor, to adjust

1980-09-08

1983-09-13

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318696, 318318, 11212112, G05B 1940

Patent

active

044045093

ABSTRACT:
A device for controlling the drive of a stepping motor to adjust the lateral stitch bight and/or the feed length of a sewing machine comprising apparatus connected to the stepping motor for rendering the stepping frequency of the stepping motor variable as a function of the speed of the sewing machine. The apparatus comprises a microcomputer which is connected to a pulse transmitter for transmitting pulses proportional to the speed of the sewing machine.

REFERENCES:
patent: 3575653 (1971-04-01), Gucwa
patent: 3654882 (1972-04-01), Kamena
patent: 3742879 (1973-07-01), Schaefer et al.
patent: 3771477 (1973-11-01), Conner
patent: 3822658 (1974-07-01), Conner
patent: 3885210 (1975-05-01), Burnett
patent: 3986466 (1976-10-01), Herzer
patent: 4121145 (1978-10-01), Talmadge
patent: 4264848 (1981-04-01), Jansen

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