Position detection device having absolute position detection app

Details Position detection device having absolute position detection app Position detection device having absolute position detection app

1989-09-01

1992-08-25

Wieder, Kenneth A.

Electricity: measuring and testing

Magnetic

Displacement

32420718, G01B 714

Patent

active

051422263

ABSTRACT:
An absolute position detector samples and outputs a digital value of absolute position data of an object of detection at each predetermined sampling timing. An interpolation circuit interpolates between position data of different sampling timings provided by the absolute position detector, thereby to produce absolute position data at close intervals. Such arrangement produces absolute position data with a time resolution which is finer than the period of the sampling timing. A further circuit produces an incremental pulse train on the basis of the output of the interpolation circuit in correspondence to change in a value of interpolation for each interpolation step.

REFERENCES:
patent: 4109200 (1978-08-01), McNulty
patent: 4450443 (1984-05-01), Dolland
patent: 4612503 (1986-09-01), Shimizu et al.
patent: 4646012 (1987-02-01), Feilchenfeld et al.
patent: 4754220 (1988-06-01), Shimizu et al.
patent: 4779048 (1988-10-01), Aichele
patent: 4786869 (1988-11-01), Kanai et al.

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