| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital scale output signal correcting device for accurately detecting and correcting an offset, gain and a phase of a two-phase sine wave signal of an encoder. SOLUTION: A correction is made by offset addition and primary conversion, by determining an error in the respective offset, gain and phase of a two-phase signal, by using a large number of data of six pieces or more, with an atctan conversion value of the two-phase signal near to a sine wave as a parameter. COPYRIGHT: (C)2008,JPO&INPIT
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