Error correction system for position measuring device

Details Error correction system for position measuring device Error correction system for position measuring device

1983-03-18

1984-10-09

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

250237G, G01B 1104

Patent

active

044752890

ABSTRACT:
A length or angle measuring device is provided with an error correction system in which the scanning unit, or the division plane of the scanning element of the scanning unit, is rotatable through an angle .phi. with respect to the division plane of the measuring scale in accordance with the desired error course. Preferably, the tilt axis of the scanning unit is maintained at a parallel spacing a from the division plane of the scale, perpendicular to the measuring direction X and parallel to the scale.

REFERENCES:
patent: 226162 (1880-04-01), Darling
patent: 4169316 (1979-10-01), Ernst
patent: 4170828 (1979-10-01), Ernst
patent: 4273447 (1981-06-01), Nelle
patent: 4295742 (1981-10-01), Nelle et al.

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