System for compensating spatial errors

摘要

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.