Position control method

Details Position control method Position control method

1985-03-11

1987-02-24

Dobeck, Benjamin

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318640, G05B 1942

Patent

active

046459936

ABSTRACT:
A position control method for aligning a workpiece in a machining apparatus. An alignment pattern, such as a diamond, is provided on the surface of the workpiece. The alignment pattern and the surrounding region are sensed by an image pickup television camera, the output of which is converted to binary form. From the binary data, the central point of the pattern is calculated. The difference between this central point and a reference point is then determined, and the result used to control the position of the workpiece via a positioning mechanism.

REFERENCES:
patent: 3923733 (1976-01-01), Olsen et al.
patent: 4123695 (1978-10-01), Hale et al.
patent: 4146924 (1979-03-01), Birk et al.
patent: 4187051 (1980-02-01), Kirsch et al.
patent: 4325125 (1982-04-01), Buchfeld
patent: 4342090 (1982-07-01), Caccoma et al.

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