| 摘要 |
PROBLEM TO BE SOLVED: To provide a numerical controller capable of precisely compensating elastic change generated when the moving direction of an object to be controlled is inversed. SOLUTION: When the control direction of a table 6 is inversed, the correction command value of backlash is updated according to an elapsed time since the inversion is generated, and the correction command value is added to a position command value, and the rotation of a survo motor 1 for driving the table 6 is controlled based on the addition result. Thus, it is possible to precisely compensate elastic change generated when the moving direction of the table 6 is inversed. COPYRIGHT: (C)2004,JPO&NCIPI
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