Resolver/digital converter

Details Resolver/digital converter Resolver/digital converter

2006-03-21

2006-03-21

Nguyen, Linh V. (Department: 2819)

Coded data generation or conversion

Phase or time of phase change

Synchro or resolver signal

C341S112000

Reexamination Certificate

active

07015840

ABSTRACT:
An R/D converter allows high precision detection of a rotation angle of a rotor axis of a resolver having high rates of rotation. An A/D converter is built into a digital signal processor and converts a sine wave and cosine wave output from the resolver. An axis angle calculator calculates tan θ=A((sin ωt)(sin θ))/A((sin ωt)(cos θ)) from A(sin ωt)(sin θ) and A(sin ωt)(cos θ) and further calculates θ=tan−1θ. The angle space is divided into quadrants and an offset value is set for each quadrant and by adding or subtracting the calculated θ to or from the offset value to form the final angle of the rotor axis of the resolver.

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patent: 0978947 (2000-02-01), None
patent: A-62-38302 (1987-02-01), None

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