System for compensating spatial errors

Details System for compensating spatial errors System for compensating spatial errors

1993-03-02

1995-04-25

Will, Thomas B.

Geometrical instruments

Distance measuring

Error compensation

33503, G01B 503

Patent

active

054087589

ABSTRACT:
A system for compensating for spatial errors of a movable machinery having a three-dimensional spatial mechanism includes a command generator for generating a commanded coordinate value in the space of command; a position controller for operating in response to the commanded coordinates value as an input; a position detector for detecting the operating position set by the position controller on the space of motion as a coordinate value of the space of command; and a spatial error compensating unit for compensating for spatial errors between the space of command and the space of motion contained in the output coordinate value of the position detector, outputting a compensated coordinate value as a measured value and correcting the commanded coordinate value by use of the compensated coordinate value, and the spatial error compensation and the motion control on the compensated space of command can be realized by use of only one system of function generator.

REFERENCES:
patent: 3775655 (1973-11-01), DuVall
patent: 3840994 (1974-10-01), Izumi et al.
patent: 4709482 (1987-12-01), Matsuura et al.
patent: 4769763 (1988-09-01), Trieb et al.
patent: 4815213 (1989-03-01), McCabe et al.
patent: 4941265 (1990-07-01), Heiland
Zhang, G., et al., "Error Compensation of Coordinate Measuring Machines," Annals of the CIRP 34(1);445-448, 1985. No month.

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