Apparatus and method for detecting position of embroidery machin

Details Apparatus and method for detecting position of embroidery machin Apparatus and method for detecting position of embroidery machin

1987-01-12

1987-08-25

Nerbun, Peter

Sewing

Special machines

Embroidering

11212112, 1122661, D05C 906, D05B 2100

Patent

active

046884980

ABSTRACT:
There is provided a method and apparatus for detecting the position of an embroidery machine after power failure. A position encoder is connected to each frame drive actuator on each axis of the embroidery machine. The computer which controls the actuators is equipped with a non-volatile memory. The encoders indicate to the computer the current position of the actuators and thus the frame. When power returns, the current position value from each encoder is compared with the required position value in the computer memory. If the values are not equal, machine start-up is inhibited and the computer commands the actuators to cause the frame to be moved to its proper position.

REFERENCES:
patent: 4365565 (1982-12-01), Kawai et al.
patent: 4388882 (1983-06-01), Yamamoto et al.
patent: 4413574 (1983-11-01), Hirota et al.
patent: 4478160 (1984-10-01), Ohniwa

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