Boots – shoes – and leggings
Patent
1983-09-21
1986-06-17
Lall, Parshotam S.
Boots, shoes, and leggings
356 4, 364559, 33 1L, G01C 308
Patent
active
045959919
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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Dr. Johannes Heidenhain GmbH
Lall Parshotam S.
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