Servo-control method and device

Details Servo-control method and device Servo-control method and device

1978-06-01

1980-05-20

Dobeck, Benjamin

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318 16, G05B 106

Patent

active

042041465

ABSTRACT:
Method and device for servo-controlling the distance of an object from a transiting surface to be followed by said object and capable of reflecting microwaves, by exploiting a control signal, wherein a radiating unit fast with said object provides directive microwave radiation and a symmetrical detector compares the phases of the radiated microwaves and the reflected microwaves, said detector providing a control signal to a servo-control circuit. The device is namely intended to automatic metal-welding machines in which the welding member forms said object and a metal workpiece forms the reflecting surface to be followed at a predetermined distance by said welding member.

REFERENCES:
patent: 3775582 (1973-11-01), Iceland
patent: 4087745 (1978-05-01), Kennedy et al.
patent: 4097796 (1978-06-01), Lunden

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