Motor controller for a sewing machine

Details Motor controller for a sewing machine Motor controller for a sewing machine

1986-11-04

1988-03-22

Nerbun, Peter

Sewing

Elements

Starting or stopping

318369, D05B 6926

Patent

active

047320990

ABSTRACT:
A motor controller for a sewing machine starts to count the number of pulse signals issued during rotation of a motor after reception of a stop signal and the detection of the needle position, and thereby sets a speed value for controlling the rotation speed of the motor so that it gradually slows based on the result of the counting of the pulse signals and so that the rotation speed of the motor goes to zero when it reaches a predetermined low value.

REFERENCES:
patent: 3851237 (1974-11-01), Yokoyama et al.
patent: 4403563 (1983-09-01), Shinozaki et al.
patent: 4516514 (1985-05-01), Neki et al.

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