A method is given for constructing nonlinear digital-analog converters for reproducing trigonometric functions. The method is based on modeling these functions by segments of a power series. Three approaches are considered to calculating the coefficients of the polynomial giving the best approximation (Taylor. Chebyshev and interpolation method). It is shown that smaller errors are obtained in the case when the coefficients are calculated using the interpolation and Chebyshev methods.
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