Interpolation device for scale arrangement

Details Interpolation device for scale arrangement Interpolation device for scale arrangement

1993-11-16

1996-01-16

Voeltz, Emanuel T.

Boots, shoes, and leggings

364582, 364581, 36447431, G06G 730

Patent

active

054854075

ABSTRACT:
An interpolation device for a scale arrangement receives sine wave and cosine wave signals indicative of a measuring data from the scale arrangement and calculates a DC offset value, an amplitude coefficient and an amount of a phase drift on the basis of the received signals. The interpolation device outputs a correct angle signal upon removing a DC offset, a gain level error, a gain unbalance and a phase drift from received signals. Therefore, the interpolation device realizes a mechanical structure of the scale arrangement to be simple.

REFERENCES:
patent: 3831168 (1974-08-01), Gronner et al.
patent: 4462083 (1984-07-01), Schwefel
patent: 4594540 (1986-06-01), Currie et al.
patent: 4630033 (1986-12-01), Baher
patent: 5121116 (1992-06-01), Taniguchi

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