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Document Type and Number:
Japanese Patent JPH0125010
Kind Code:
B2
Abstract:
A process and apparatus for obtaining harmonic-free periodic signals in an incremental measuring system is disclosed in which a graduation having a graduation period P is scanned by at least six scanning elements (for the case in which the previously determined bandwidth N of the analog signals obtained in scanning the graduation N is equal to 3). The periodic analog signals generated by the scanning elements are subjected to a Fourier analysis for the determination of the Fourier coefficients of the base or fundamental wave of the periodic analog signals. These Fourier coefficients are then evaluated as harmonic-free periodic signals for the formation of position measuring values.

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Inventors:
ARUFUONSU SHUPIISU
Application Number:
JP19628383A
Publication Date:
May 16, 1989
Filing Date:
October 21, 1983
Export Citation:
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Assignee:
DOKUTORU YOHANESU HAIDENHAIN GMBH
International Classes:
G01B11/00; G01B21/00; G01D5/244; G01D5/34; G01D5/347; G01D5/36; G01R23/167; G05B5/01; H03M1/00



 
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