FOLLOWING SINE AND COSINE ANGLE-TO-CODE CONVERTER Russian patent published in 2018 - IPC H03M1/48 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of measurement technology, in particular to sine-cosine angle converters to code. Tracking sine-cosine angle converter into the code containing the first multiplier for multiplying the input voltage of the sine signal by the digital cosine value of the output code, the second multiplier for multiplying the input voltage of the cosine signal by the digital value of the sine of the output code, the subtractor whose inputs are connected to the outputs of the multipliers, and the output is with a voltage controlled oscillator, a VCO that generates signals for incrementing and decrementing the reverse counter, depending on the sign and the magnitude of the error, the outputs of the forward and reverse counting of the VCO are connected to the reverse counter of the output code of the angle, the output of the counter is connected to a read-only memory, ROM, sine and cosine values, is characterized in that the reverse counter is divided into two parts – the high and low, the high-end part is connected to the ROM of the sine and cosine values, and the younger one is connected to the inputs of the linear interpolation blocks of the table sine and cosine values for the least significant bits of the reverse counter that are also connected to the outputs of the ROM, the outputs of the linear interpolation units are connected to the multipliers.

EFFECT: increase the digitizer capacity with a smaller ROM volume without losing the performance of the conversion.

1 cl, 2 dwg, 1 tbl