Electro-optical systems for control of robots, manipulator arms

Details Electro-optical systems for control of robots, manipulator arms Electro-optical systems for control of robots, manipulator arms

1984-03-22

1986-07-22

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

901 47, G01N 286

Patent

active

046021639

ABSTRACT:
Method and apparatus are provided for correcting positional data produced by a machine including a member moveable in at least two co-ordinate axes. The machine includes an encoder for providing rough position data indicating the coarse position of the member in each of the axes and provision is made for moving the moveable member to a position data correction location wherein the actual position of the member is determined electro-optically in the two coordinate axes relative to a reference point external to the machine. A signal representative of the actual position is generated and used to correct the rough position data provided by the encoder.

REFERENCES:
patent: 3852579 (1974-12-01), Sohn et al.
patent: 3888362 (1975-06-01), Fletcher et al.
patent: 4226536 (1980-10-01), Dreyfus et al.
patent: 4337566 (1982-07-01), DiMatteo et al.
patent: 4357833 (1982-11-01), Wiklund et al.

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