DEVICE FOR DETECTING ABSOLUTE POSITION

摘要

A device for detecting absolute position employs a resolver (106) as position detector means. An interpolated error corresponding to the rotational angle of the rotary shaft of the resolver (106) is stored in advance in a data memory which consists of a bubble memory (102h) in a numerically controlled apparatus (102). When an absolute position is to be detected, the interpolated error of the resolver (106) is read out from the memory, and an absolute position signal detected by the resolver (106) is corrected by the interpolated error thereby to detect a correct absolute position.