METHOD OF CORRECTING DETECTION POSITION OF ELECTROMAGNETIC INDUCTANCE-TYPE POSITION DETECTOR

摘要

The purpose of the present invention is to provide a method for correcting the detection position of an electromagnetic inductance-type position detector allowing for correction of detection positions without requiring a high precision position detector separate from the electromagnetic inductance-type position detectors, the correction data therefor being acquired by the electromagnetic inductance-type position detector itself. This is accomplished by performing: a detection position acquiring process of acquiring a detection position by moving a moving body according to a velocity command value for a constant velocity and detecting the position of the moving body with the electromagnetic inductance-type position detector; a constant velocity determining process of determining that the moving body has moved at the constant velocity in a prescribed movement section on the basis of, for example, the detection position and coil pitch; and a correction data acquiring process of acquiring correction data on the basis of an approximated ideal position and the detection position, wherein the approximated ideal position is found by adding the product of the constant velocity and the elapsed time since acquisition of a reference detection position to the reference detection position, where the reference detection position is the detection position corresponding to the starting position of any of the coil pitches in the movement section.