Boots – shoes – and leggings
Patent
1990-05-11
1992-05-26
Lall, Parshotam S.
Boots, shoes, and leggings
364561, G01B 2100
Patent
active
051173760
ABSTRACT:
In an incremental measuring system a measuring scale provided on a scale member is scanned, periodic, basically sinusoidal analog measured-value signals are generated as a result of said scanning, and digital countable signals, which depend on the direction of the scanning movement, are derived from said analog measured-value signals and are delivered to evaluating means, such as indicating or control means. Electronic means are provided for correcting errors consisting at least of defects of the scale or of the positioning of the scale member in accordance with a stored or predetermined correction program. In order to avoid corrections resulting in large changes of the count and/or indication and to permit corrections to be effected in accordance with a correction curve which can be adapted or selected as desired to the requirements to be met by the measuring system, for a correction of an error the analog measured-value signals are combined in multiplier circuitry with correction factors in accordance with a previously stored correction program or in accordance with a predetermined correction function, which may be a linear function, whereby corrected analog signals are obtained, which have been placed in phase from the measured-value signals in steps amounting each to only a small fractional part of a complete period of said measured-value signals, and the corrected analog signals thus obtained are delivered to said digitalizing means.
REFERENCES:
patent: 2336550 (1943-12-01), Kruper
patent: 2985826 (1961-05-01), Fluegel
patent: 3039032 (1962-06-01), Fowler
patent: 3182385 (1965-05-01), Esposito
patent: 4231662 (1980-11-01), Feiland et al.
patent: 4475088 (1984-10-01), Beard
patent: 4631520 (1986-12-01), Wingate
Rieder Heinz
Schwaiger Max
Cosimano Edward R.
Lall Parshotam S.
RSF-Elektronik Gesellschaft m.b.H.
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