| 摘要 |
Resolver apparatus is disclosed employing a system which receives resolver inputs Rsin theta and Rcos theta and is adjusted according to coarse and fine processor angles alpha c and alpha f to achieve a measurement of, or facilitate operations on, the resolver input angle theta . The apparatus employs two computing channels, one for each resolver input, a function generator circuit for developing tangent (or cotangent) functions of alpha c, a linear interpolator in one of the channels, and circuits interconnecting the channels so that the signals ultimately developed in the channels bear a relationship which permits one of them to be linearly interpolated as a function of alpha f while maintaining an interpolating angle error characteristic which is small and independent of alpha c. A simple passive compensating technique may be employed to take advantage of this characteristic to produce a highly accurate response. Three of the embodiments employ tapped and switched dividers to generate the tangent functions while a fourth exploits those values of alpha c which reduce the tangent functions to zero of unity, thereby permitting the use of simple combining circuits for function generation.
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