Title:
POSITION TRANSDUCER
Document Type and Number:
Japanese Patent JPH05296792
Kind Code:
A
Abstract:
PURPOSE:To make the extent of interpolative accuracy so as not to be deteriorated even if the scale part of a displacement signal detecting element varies its attitude, in a position transducer. CONSTITUTION:Four signals a1, a2, b1, b2 different in each phase obtained out of a displacement signal element are inputted, the signal a2 is mixed in the signal a2 as much as a certain rate by an amplitude regulator 9A so as to make a phase of the signal a2 be more advanced as far as 90 degrees than the signal b1, thereby performing a phase compensation. Then, the signal a1 is mixed in the signal b2 as far as a certain rate by another simplitude regulator 9B so as to make a phase of the signal b2 be more delayed as far as 90 degrees than that of the signal a1, thereby performing the phase compensation. Furthermore, on the basis of a signal that performing offset adjustment and amplitude regulation, an interpolating circuit 14 interpolates, through which a position is detected.
Inventors:
SHIBATA SHINJI
YASHIRO ATSUSHI
YASHIRO ATSUSHI
Application Number:
JP8635692A
Publication Date:
November 09, 1993
Filing Date:
March 10, 1992
Export Citation:
Assignee:
OKUMA MACHINERY WORKS LTD
International Classes:
B23Q17/22; G01B11/00; G01B21/00; G01D5/244; G01D5/245; G01D5/36; (IPC1-7): G01D5/245; B23Q17/22; G01B11/00; G01D5/36
Attorney, Agent or Firm:
Azusa Yuzo
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